From smi_south_central at listsmart.osl.state.or.us Mon Sep 13 14:05:38 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Mon, 13 Sep 2010 14:05:38 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Oregon Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Monday, September 13, 2010 2:40 PM Jim Little 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 South Central Oregon TUESDAY Upper air charts show a generally west-southwesterly flow aloft as an upper level low pressure area intensifies well off the Pacific Northwest coastline. An embedded weak upper disturbance in the flow could touch off a few showers or isolated thunderstorms, but moisture amounts appear low. None the less we can't rule out the possibility of a shower. OUTLOOK (WEDNESDAY-FRIDAY) The flow aloft backs a little southwesterly, but the weak disturbance has moved off to the east for dry weather and more sunshine Wednesday. By Thursday a weak cold front has spun off the upper level low and is draped across NE Oregon. Models suggest very little moisture however. On Friday a second, stronger, Pacific cold front moves into the northwest and brings precipitation east of the Cascades. Daytime mixing heights remain high throughout the extended period until Friday when mixing heights briefly spike to around 5000 feet early in the afternoon, but by light afternoon have fallen to only about 2500 feet. 2. DISPERSION TUESDAY Mixing height 2900 - 3900 ft during the morning. Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening. Transport wind light and variable and controlled by local terrain during the morning. Transport wind increases to WSW to NW at 6 - 12 mph during the afternoon and increases to W to NW at 10 - 16 mph during the evening. Surface wind light and variable and controlled by local terrain during the morning. Surface wind increases to WSW to NW at 6 - 10 mph during the afternoon and evening. OUTLOOK: WEDNESDAY Mixing height below 1000 ft early rising to 4000 - 5000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSE to SW at 6 - 12 mph during the morning becoming SW to WSW at 10 - 22 mph during the afternoon. Surface wind S to SW at 6 - 10 mph during the morning becoming SW to W at 10 - 16 mph during the afternoon. THURSDAY Mixing height below 1000 ft early rising to 2300 - 3300 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSE to SSW at 4 - 8 mph during the morning becoming SSW to WSW at 4 - 8 mph during the afternoon. Surface wind light and variable. FRIDAY Mixing height below 1000 ft early rising to 4500 - 5000 ft by late morning lowering to 1500 - 2500 ft during the afternoon. Transport wind SSE to SW at 4 - 8 mph during the morning becoming SSW to WSW at 4 - 8 mph during the afternoon. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Tuesday, September 14, 2010. ================================================================== Avoid ignitions within 15 miles to the WSW through NW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4:00pm. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Tue Sep 14 14:20:17 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Tue, 14 Sep 2010 14:20:17 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Oregon Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Tuesday, September 14, 2010 2:40 PM Jim Little 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 WEDNESDAY An upper level low shifts to about 450 miles west of Gray's Harbor, Washington on Wednesday. A Pacific cold front associated with that low moves into western Oregon late in the day, however moisture from this system will not initially reach east of the Cascades. OUTLOOK (THURSDAY-SATURDAY) The upper low remains about 450 miles offshore but drops south to west of Waldport on Thursday. This leaves southwesterly flow aloft over the region and partly cloudy skies. By Friday the upper low is approximately 400 miles west of Crescent City, California. Another Pacific cold front spins out of this low and pushes rain to the area by Friday night. Warm air aloft ahead of this front suppresses mixing heights. Saturday sees the low about 200 west of Coos Bay. Yet another surge of moisture out of this low spreads widespread rain to the region but maximum mixing heights rebound to above 5000 feet. 2. DISPERSION WEDNESDAY Mixing height 4300 - 5000 ft during the morning. Mixing height rises to above 5000 ft during the afternoon then lowers to 2800 - 3800 ft during the evening. Transport wind SSE to SSW at 6 - 12 mph during the morning. Transport wind shifts to SW to WSW and increases to 12 - 22 mph during the afternoon and evening. Surface wind SSE to SSW at 6 - 10 mph during the morning. Surface wind shifts to SW to WSW and increases to 10 - 18 mph during the afternoon then decreases to SSW to WSW at 6 - 10 mph during the evening. OUTLOOK: THURSDAY Mixing height below 1000 ft early rising to 3600 - 4600 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSW to WSW at 10 - 18 mph. Surface wind S to SW at 6 - 12 mph. FRIDAY Mixing height below 1000 ft early rising to 2100 - 3100 ft by late morning rising to 2900 - 3900 ft during the afternoon. Transport wind SSE to SW at 4 - 8 mph during the morning becoming SSW to WSW at 4 - 8 mph during the afternoon. Surface wind light and variable. SATURDAY Mixing height below 1000 ft early rising to 1800 - 2800 ft by late morning rising to 2700 - 3700 ft during the afternoon. Transport wind SSE to SW at 4 - 8 mph during the morning becoming SW to W at 4 - 8 mph during the afternoon. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Wednesday, September 15, 2010. ================================================================== Avoid ignitions within 10 miles to the SSE through W of SSRAs. For units that will smolder significantly through the night avoid burning within at least 15 miles to the SSE through W in or near drainages leading to SSRAs. Watch for shifting transport winds. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Wed Sep 15 14:56:59 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Wed, 15 Sep 2010 14:56:59 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Wednesday, September 15, 2010 2:40 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 THURSDAY A weakening cold front will give way to a transitory upper-level ridge of high pressure with a warm west-southwesterly flow aloft. Skies should be partly to mostly cloudy with near-normal temperatures. OUTLOOK (FRIDAY-SUNDAY) Southwesterly flow aloft will increase Friday with another cold front forecast to move onshore in the afternoon. Showers may spread into the region Friday night, with an upper-level trough producing some showers Saturday and Sunday. Temperatures will cool to below normal over the weekend. 2. DISPERSION THURSDAY Mixing height below 500 ft early rising to 3500 - 4500 ft by late morning. Afternoon mixing height rises above 5000 ft then lowers below 1000 ft during the evening. Transport wind S to SW at 6 - 12 mph during the morning and afternoon. Transport wind becomes light and variable and controlled by local terrain during the evening. Surface wind light and variable and controlled by local terrain during the morning. Surface wind increases to SW to WNW at 4 - 8 mph during the afternoon then becomes light and variable during the evening. OUTLOOK: FRIDAY Mixing height below 1000 ft early rising to 4000 - 5000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SE to SSW at 6 - 10 mph during the morning becoming SSW to WSW at 9 - 15 mph during the afternoon. Surface wind light and variable during the morning becoming SSW to WSW at 8 - 12 mph during the afternoon. SATURDAY Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning rising to 4000 - 5000 ft during the afternoon. Transport wind SSE to SSW at 6 - 12 mph during the morning becoming SSW to WSW at 6 - 12 mph during the afternoon. Surface wind SE to SSW at 4 - 8 mph during the morning becoming SSW to WSW at 4 - 8 mph during the afternoon. SUNDAY Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning rising to 4500 - 5000 ft during the afternoon. Transport wind S to SW at 6 - 10 mph. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Thursday, September 16, 2010. ================================================================== Avoid ignitions within 12 miles to the S through NNW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 20 miles in all directions of SSRAs. Complete ignitions by 4 p.m. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Thu Sep 16 14:51:58 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Thu, 16 Sep 2010 14:51:58 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Thursday, September 16, 2010 2:40 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 FRIDAY Skies will be mostly cloudy ahead of the next weather system moving across western Oregon. Increasing south-southwesterly transport winds will help high temperatures climb to near normal and combine with high mixing heights to provide good ventilation conditions. OUTLOOK (SATURDAY-MONDAY) A very moist southwesterly flow aloft will keep skies generally cloudy with surges of precipitation. High temperatures will cool to below normal Saturday, with a little rain likely early. Another round of rain is likely Sunday with significantly cooler temperatures and the snow level dropping to 8000 feet. Showers will taper off Monday with continued well below normal temperatures. 2. DISPERSION FRIDAY Mixing height below 500 ft early rising to 4000 - 5000 ft by late morning. Afternoon mixing height rises above 5000 ft then lowers to 1000 - 2000 ft during the evening. Transport wind SSE to SSW at 9 - 15 mph during the morning. Transport increases to S to SW at 12 - 22 mph during the afternoon then shifts to WSW to WNW and decreases to 8 - 12 mph during the evening. Surface wind SSE to SW at 4 - 8 mph during the morning. Surface increases to SSW to SW at 8 - 12 mph during the afternoon then shifts to WSW to WNW and decreases to 4 - 8 mph during the evening. OUTLOOK: SATURDAY Mixing height below 1000 ft early rising to 3500 - 4500 ft by late morning and through the afternoon. Transport wind light and variable during the morning becoming SSW to SW at 8 - 12 mph during the afternoon. Surface wind light and variable during the morning becoming SW to W at 4 - 8 mph during the afternoon. SUNDAY Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning rising to 4500 - 5000 ft during the afternoon. Transport wind S to SW at 6 - 10 mph. Surface wind light and variable. MONDAY Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning rising to 4500 - 5000 ft during the afternoon. Transport wind WSW to WNW at 8 - 12 mph. Surface wind SW to WNW at 4 - 8 mph. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Friday, September 17, 2010. ================================================================== Avoid ignitions within 12 miles to the SSE through WNW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 20 miles to the SE through WNW in or near drainages leading to SSRAs. Watch for shifting transport winds. Complete ignitions by 4 p.m. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Fri Sep 17 14:57:35 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Fri, 17 Sep 2010 14:57:35 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Friday, September 17, 2010 2:40 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 SATURDAY An autumn-like weather pattern has set up across the Pacific Northwest. A strong upper-level trough is centered about 700 miles off the Oregon and northern California coast and will circulate another surges of rain northward across western Oregon during the afternoon and evening. Clouds will increase during the day, across south-central Oregon, with rain likely spreading from southwest to northeast across the region late in the day. OUTLOOK (SUNDAY-TUESDAY) Rainfall will increase and likely dampen the entire region Sunday with the upper-level trough finally moving onshore Sunday night. Colder air aloft will turn the steady rain to showers Sunday night with a slight chance of t-storms. A few showers could linger into Monday as the flow aloft turns more westerly and begins to dry out. Skies should clear on Tuesday with a continued westerly flow aloft. 2. DISPERSION SATURDAY Mixing height below 1000 ft early rising to 2800 - 3800 ft by late morning. Afternoon mixing height rises to 4000 - 5000 ft then lowers to 1000 - 2000 ft during the evening. Transport wind SSE to SSW at 9 - 15 mph during the morning and afternoon. Transport wind decreases to S to SW at 4 - 8 mph during the evening. Surface wind SSE to SW at 4 - 8 mph during the morning and afternoon. Surface wind becomes light and variable and controlled by local terrain during the evening. OUTLOOK: SUNDAY Mixing height below 1000 ft early rising to 2200 - 3200 ft by late morning rising above 5000 ft during the afternoon. Transport wind S to SSW at 10 - 22 mph. Surface wind SSE to SW at 6 - 12 mph during the morning becoming SSW to WSW at 9 - 15 mph during the afternoon. MONDAY Mixing height 2200 - 3200 ft during the morning rising above 5000 ft during the afternoon. Transport wind WSW to WNW at 8 - 12 mph. Surface wind SW to W at 4 - 8 mph during the morning becoming W to NW at 5 - 9 mph during the afternoon. TUESDAY Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning rising above 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Saturday and Sunday, September 18 and 19, 2010. ================================================================== For Saturday: Avoid ignitions within 15 miles to the SE through SW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles to the SE through SW in or near drainages leading to SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4 p.m. For Sunday: Avoid ignitions within 10 miles to the SSW through WSW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 15 miles to the SSW through WSW in or near drainages leading to SSRAs. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Mon Sep 20 07:22:55 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Mon, 20 Sep 2010 07:22:55 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Monday, September 20, 2010 7:50 AM Jim Little 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 Upper air charts show a trough over the northern sections of the Pacific Northwest with a generally westerly flow aloft over southern sections, including south-central Oregon. This will give dry weather conditions to the region with a generally southwest to westerly transport wind during the afternoon and evening. 2. DISPERSION MONDAY Mixing height 2800 - 3800 ft during the morning. Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening. Transport wind light and variable and controlled by local terrain during the morning. Transport wind increases to SW to W at 8 - 12 mph during the afternoon and evening. Surface wind light and variable and controlled by local terrain during the morning. Surface wind increases to SW to W at 6 - 12 mph during the afternoon then becomes light and variable during the evening. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Monday, September 20, 2010. ================================================================== Avoid ignitions within 15 miles to the S through NW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4:00pm. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Mon Sep 20 14:22:55 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Mon, 20 Sep 2010 14:22:55 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Monday, September 20, 2010 2:40 PM Jim Little 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 TUESDAY Upper level flow will be generally west-southwest ahead of a weak trough about 400 miles west of the southern Oregon Coast. That trough will approach during the day, but it is weak and mainly headed toward California, so its primary effect will be a few mid and high clouds over the region. No rain is likely. OUTLOOK (WEDNESDAY-FRIDAY) The trough moves into California on Wednesday leaving a weak ridge over the western Oregon. South-central Oregon will see dry weather. By Thursday a weakening front drags across northwestern Oregon for some light rain but no moisture is likely to make it this far south. By Friday a deep upper low is about 600 miles west of Vancouver Island. This helps to build a ridge over the region for dry weather and warmer temperatures. 2. DISPERSION TUESDAY Mixing height 2200 - 3200 ft during the morning. Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening. Transport wind light and variable and controlled by local terrain. Transport wind increases to N to NE at 9 - 15 mph during the evening. Surface wind light and variable and controlled by local terrain. OUTLOOK: WEDNESDAY Mixing height below 1000 ft early rising to 2300 - 3300 ft by late morning rising above 5000 ft during the afternoon. Transport wind NNW to NNE at 4 - 8 mph during the morning becoming WNW to NNW at 4 - 8 mph during the afternoon. Surface wind light and variable during the morning becoming NW to N at 4 - 8 mph during the afternoon. THURSDAY Mixing height below 1000 ft early rising to 1500 - 2500 ft by late morning rising to 4000 - 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. FRIDAY Mixing height below 1000 ft early rising to 1500 - 2500 ft by late morning rising to 4000 - 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Tuesday, September 21, 2010. ================================================================== Avoid ignitions within 15 miles in all directions of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4:00pm. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Tue Sep 21 14:54:28 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Tue, 21 Sep 2010 14:54:28 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Tuesday, September 21, 2010 2:40 PM Jim Little 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 The day begins with the region covered by the northern portion of an upper trough centered over central California. This will move to the east during the day and weather will remain dry. There will be a generally northwest transport wind and smoke dispersal conditions should be good. OUTLOOK (THURSDAY-SATURDAY) On Thursday a generally westerly flow aloft will develop. Weather will be dry and mixing heights should top 5000 feet. Transport winds will be generally southwest becoming more westerly during the day. By Friday a deep upper low in the Gulf of Alaska builds a moderate upper ridge over the Pacific Northwest. Maximum mixing heights will remain high. The upper low moves closer on Saturday and flow aloft veers to more southerly. However, moisture stays well east of the state for more pleasant, dry weather. 2. DISPERSION WEDNESDAY Mixing height 2600 - 3600 ft during the morning. Mixing height rises to above 5000 ft during the afternoon then lowers to 1400 - 2400 ft during the evening. Transport wind light and variable and controlled by local terrain during the morning. Transport wind increases to W to NW at 8 - 14 mph during the afternoon and increases to WNW to NW at 12 - 22 mph during the evening. Surface wind light and variable and controlled by local terrain during the morning. Surface wind increases to W to NW at 8 - 12 mph during the afternoon and evening. OUTLOOK: THURSDAY Mixing height below 1000 ft early rising to 3400 - 4400 ft by late morning rising above 5000 ft during the afternoon. Transport wind SW to W at 10 - 18 mph. Surface wind SSW to WSW at 6 - 12 mph during the morning becoming WSW to WNW at 10 - 20 mph during the afternoon. FRIDAY Mixing height below 1000 ft early rising to 1500 - 2500 ft by late morning rising above 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. SATURDAY Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning rising above 5000 ft during the afternoon. Transport wind light and variable during the morning becoming SSE to SSW at 4 - 8 mph during the afternoon. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Wednesday, September 22, 2010. ================================================================== Avoid ignitions within 15 miles to the WSW through NNE of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles to the SW through NNE in or near drainages leading to SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4:00pm. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Wed Sep 22 15:04:07 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Wed, 22 Sep 2010 15:04:07 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Wednesday, September 22, 2010 2:40 PM Jim Little 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 THURSDAY A weak upper disturbance moves into British Columbia during the day. This will support a weak Pacific cold front dragging into northwest Oregon during the day. Any rain from this system will be confined to extreme northwestern Oregon and dry weather is expected for south central portions of the state. Winds will be southwesterly, becoming westerly during the day. Smoke dispersal conditions will be good. OUTLOOK (FRIDAY-SUNDAY) An upper level low settles into the Gulf of Alaska about 600 miles west of the Queen Charlotte Islands on Friday. Southwesterly flow aloft ahead of this system pumps up a ridge for the region. This will give dry weather and mostly sunny skies to the area. Winds under the ridge will be light (generally southerly becoming northwesterly) but mixing heights should remain high. Saturday will see the ridge drift slightly east and the flow aloft will be more southerly but smoke dispersal conditions will remain good with slightly stronger transport winds. Sunday the ridge moves farther east the flow aloft will be more southwesterly and smoke dispersal conditions will remain good. 2. DISPERSION THURSDAY Mixing height 3100 - 4100 ft during the morning. Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening. Transport wind SSW to WSW at 10 - 18 mph. Surface wind SSW to WSW at 9 - 15 mph during the morning and afternoon. Surface wind decreases to WSW to WNW at 4 - 8 mph during the evening. OUTLOOK: FRIDAY Mixing height below 1000 ft early rising to 3300 - 4300 ft by late morning rising above 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. SATURDAY Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning rising above 5000 ft during the afternoon. Transport wind light and variable during the morning becoming WSW to NW at 4 - 8 mph during the afternoon. Surface wind light and variable. SUNDAY Mixing height below 1000 ft early rising to 2000 - 3000 ft by late morning rising above 5000 ft during the afternoon. Transport wind ESE to SSE at 4 - 8 mph during the morning becoming WNW to NNW at 4 - 8 mph during the afternoon. Surface wind SE to SSW at 4 - 8 mph during the morning becoming WNW to NNW at 4 - 8 mph during the afternoon. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Thursday, September 23, 2010. ================================================================== Avoid ignitions within 15 miles to the SSW through NW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles to the S through NW in or near drainages leading to SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4:00pm. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml Nick Yonker Meteorology Manager Oregon Department of Forestry 503-945-7451 -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Thu Sep 23 15:02:44 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Thu, 23 Sep 2010 15:02:44 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Thursday, September 23, 2010 2:40 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 FRIDAY A building ridge of high pressure will clear skies over south-central Oregon with temperatures warming to above normal. However, light transport winds will make for only marginal ventilation conditions. OUTLOOK (SATURDAY-MONDAY) A very weak weather system is forecast to ride over the top of the protective ridge of high pressure Sunday but will have little effect on the generally stagnant weather pattern. The ridge is forecast to hold firm through at least Monday with continued light transport winds making for only marginal ventilation conditions. 2. DISPERSION FRIDAY Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning. Afternoon mixing height rises to 4000 - 5000 ft then lowers below 1000 ft during the evening. Transport wind SSW to WSW at 4 - 8 mph during the morning. Transport wind becomes light and variable and controlled by local terrain during the afternoon and evening. Surface wind light and variable and controlled by local terrain. OUTLOOK: SATURDAY Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSE to SSW at 6 - 10 mph during the morning becoming SSW to WSW at 8 - 14 mph during the afternoon. Surface wind light and variable during the morning becoming SSW to WSW at 5 - 9 mph during the afternoon. SUNDAY Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning rising above 5000 ft during the afternoon. Transport wind SW to W at 4 - 8 mph. Surface wind light and variable. MONDAY Mixing height below 1000 ft early rising to 2000 - 3000 ft by late morning rising to 4000 - 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Friday, September 24, 2010. ================================================================== Avoid ignitions within 15 miles in all directions of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4 p.m. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Fri Sep 24 14:41:13 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Fri, 24 Sep 2010 14:41:13 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Friday, September 24, 2010 2:40 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 SATURDAY Southwesterly flow aloft will begin to increase Saturday, as a broad upper-level ridge shifts east of Oregon. Sunny skies will provide the heating necessary to replace morning inversions with good afternoon mixing. Increasing transport wind speeds will improve daytime ventilation conditions. OUTLOOK (SUNDAY-TUESDAY) A very weak weather system is forecast to move onshore Sunday, with some high clouds likely streaming into the region. Daytime smoke dispersion should be good. The upper-level ridge is forecast to rebuild Monday with morning inversions and slackening transport winds. Increasing southwesterly flow aloft is forecast to bring another weak system into western Washington and northwestern Oregon Tuesday. Increasing transport winds should improve daytime ventilation conditions with good afternoon mixing. 2. DISPERSION SATURDAY Mixing height below 500 ft early rising to 3000 - 4000 ft by late morning. Afternoon mixing height rises above 5000 ft then lowers below 1000 ft during the evening. Transport wind S to SW at 8 - 14 mph during the morning and afternoon. Transport wind decreases to SW to W at 4 - 8 mph during the evening. Surface wind SSE to SSW at 4 - 8 mph during the morning. Surface wind shifts to SSW to WSW at 4 - 8 mph during the afternoon then becomes light and variable and controlled by local terrain during the evening. OUTLOOK: SUNDAY Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSW to WSW at 6 - 10 mph during the morning becoming WSW to WNW at 6 - 10 mph during the afternoon. Surface wind light and variable during the morning becoming WSW to NW at 5 - 9 mph during the afternoon. MONDAY Mixing height below 1000 ft early rising to 2000 - 3000 ft by late morning rising to 4000 - 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. TUESDAY Mixing height below 1000 ft early rising to 2000 - 3000 ft by late morning rising to 4500 - 5000 ft during the afternoon. Transport wind SW to W at 4 - 8 mph during the morning becoming WSW to WNW at 8 - 12 mph during the afternoon. Surface wind light and variable during the morning becoming W to NW at 8 - 12 mph during the afternoon. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Saturday and Sunday, September 25 and 26, 2010. ================================================================== For Saturday: Avoid ignitions within 15 miles to the S through W of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles to the S through W in or near drainages leading to SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4 p.m. For Sunday: Avoid ignitions within 15 miles to the SSW through NNW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4 p.m. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Mon Sep 27 14:44:43 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Mon, 27 Sep 2010 14:44:43 -0700 Subject: SMI South Central (Smoke Management Instructions) Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Monday, September 27, 2010 2:40 PM Jim Little 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 High pressure remains over the region for fair skies and warm temperatures and relatively light winds aloft. The high is centered to the south of the Pacific Northwest and to the west, over the ocean, flow is southwesterly. Full sunshine will give warm afternoon temperatures which will push mixing heights high enough for generally good smoke dispersal conditions. EXTENDED OUTLOOK (WEDNESDAY - THURSDAY) The ridge aloft builds Wednesday and mixing heights will decrease somewhat. Smoke dispersal conditions remain fair to good, however. On Thursday a disturbance embedded in the southwesterly flow aloft offshore turns higher level winds more southwesterly. This should have little effect on weather in south central Oregon. By Friday the disturbance is in Canada. High pressure remains over the region for fair skies and above average temperatures. 2. DISPERSION TUESDAY Mixing height 2600 - 3600 ft during the morning. Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening. Transport wind S to SW at 5 - 9 mph during the morning. Transport wind shifts to WSW to WNW at 8 - 12 mph during the afternoon and shifts to NW to NNW at 8 - 12 mph during the evening. Surface wind light and variable and controlled by local terrain during the morning. Surface wind increases to SW to WNW at 6 - 10 mph during the afternoon then becomes light and variable during the evening. OUTLOOK: WEDNESDAY Mixing height below 1000 ft early rising to 2000 - 3000 ft by late morning rising above 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. THURSDAY Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SW to W at 4 - 8 mph during the morning becoming W to NW at 4 - 8 mph during the afternoon. Surface wind WSW to WNW at 4 - 8 mph. FRIDAY Mixing height below 1000 ft early rising to 4500 - 5000 ft by late morning and through the afternoon. Transport wind WSW to NW at 4 - 8 mph. Surface wind WSW to NW at 4 - 8 mph. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Tuesday, September 28, 2010. ================================================================== Avoid ignitions within 15 miles in all directions of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs. Watch for shifting transport winds. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4:00pm. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Tue Sep 28 14:44:38 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Tue, 28 Sep 2010 14:44:38 -0700 Subject: SMI South Central (Smoke Management Instructions) (no subject) Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Tuesday, September 28, 2010 2:40 PM Jim Little 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 WEDNESDAY In the upper atmosphere a ridge covers the Pacific Northwest for Wednesday. The ridge is centered to the south with a generally west to east flow aloft over the region. Daytime heating should help push mixing heights to around 5000 feet for generally good smoke dispersal conditions. Winds will be generally northeasterly across the area. EXTENDED OUTLOOK (THURSDAY - SATURDAY) An upper level disturbance moves SW to NE offshore toward southwestern British Columbia on Thursday. A surface thermal trough will extend from central California into SW Oregon. Winds will be generally southerly or south-southeasterly. On Friday the upper ridge retreats slightly eastward and the thermal trough shifts eastward as well. Transport winds will become south westerly. Mixing heights remain suppressed. The upper ridge flattens Saturday but skies will remain fair with good mixing heights and a generally southerly transport wind. 2. DISPERSION WEDNESDAY Mixing height 1200 - 2200 ft during the morning. Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening. Transport wind light and variable and controlled by local terrain. Transport wind increases to NE to E at 6 - 12 mph during the evening. Surface wind light and variable and controlled by local terrain. OUTLOOK: THURSDAY Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning rising above 5000 ft during the afternoon. Transport wind ESE to S at 5 - 9 mph during the morning becoming SSW to WSW at 9 - 15 mph during the afternoon. Surface wind light and variable during the morning becoming SW to WSW at 8 - 12 mph during the afternoon. FRIDAY Mixing height below 1000 ft early rising to 4500 - 5000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSW to WSW at 4 - 8 mph during the morning becoming W to NW at 4 - 8 mph during the afternoon. Surface wind light and variable. SATURDAY Mixing height below 1000 ft early rising to 1500 - 2500 ft by late morning rising above 5000 ft during the afternoon. Transport wind S to SW at 4 - 8 mph. Surface wind light and variable during the morning becoming S to SW at 4 - 8 mph during the afternoon. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Wednesday, September 29, 2010. ================================================================== Delay ignitions until 10:00am. Avoid ignitions within 15 miles in all directions of SSRAs. For units that will smolder significantly through the night avoid burning within at least 35 miles in all directions of SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4:00pm. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Wed Sep 29 14:33:07 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Wed, 29 Sep 2010 14:33:07 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Wednesday, September 29, 2010 2:40 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 THURSDAY A strong upper-level ridge will remain over the Pacific Northwest but shift slightly eastward. The ridge axis will extend from eastern Nevada northwestward, over eastern Oregon, into British Columbia. A surface thermal trough will shift inland, into southern Oregon, and extend northwestward to just off the north coast. Suppressed mixing heights and light transport winds will make for marginal ventilation conditions. OUTLOOK (FRIDAY-SUNDAY) The upper-level ridge will weaken and continue to slowly shift eastward. The surface thermal trough is forecast to shift east of the Cascades Friday with light onshore transport winds. Transport winds are expected to remain light Saturday, before turning strongly onshore Sunday, in response to an approaching upper-level trough and surface cold front. That will improve ventilation conditions. 2. DISPERSION THURSDAY Mixing height below 500 ft early rising to 2900 - 3900 ft by late morning. Afternoon mixing height remains near 2900 - 3900 ft then lowers below 1000 ft during the evening. Transport wind SE to SSW at 4 - 8 mph during the morning. Transport wind becomes light and variable and controlled by local terrain during the afternoon and evening. Surface wind light and variable and controlled by local terrain. OUTLOOK: FRIDAY Mixing height below 1000 ft early rising to 2100 - 3100 ft by late morning rising to 4000 - 5000 ft during the afternoon. Transport wind light and variable during the morning becoming WSW to WNW at 4 - 8 mph during the afternoon. Surface wind light and variable during the morning becoming WSW to WNW at 4 - 8 mph during the afternoon. SATURDAY Mixing height below 1000 ft early rising to 2000 - 3000 ft by late morning rising to 3700 - 4700 ft during the afternoon. Transport wind SE to SSW at 4 - 8 mph. Surface wind light and variable. SUNDAY Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning rising to 4500 - 5000 ft during the afternoon. Transport wind SW to W at 6 - 10 mph. Surface wind SW to W at 4 - 8 mph during the morning becoming WSW to WNW at 9 - 15 mph during the afternoon. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Thursday, September 30, 2010. ================================================================== Avoid ignitions within 15 miles in all directions of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4 p.m. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_south_central at listsmart.osl.state.or.us Thu Sep 30 14:48:14 2010 From: smi_south_central at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Thu, 30 Sep 2010 14:48:14 -0700 Subject: SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Thursday, September 30, 2010 2:40 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625 FRIDAY A strong upper-level ridge will remain over the Pacific Northwest but shift slightly eastward. The surface thermal trough is forecast to shift east of the Cascades with light onshore transport winds. Ventilation conditions will be marginal due to suppressed mixing heights and light transport winds. However, increasing onshore transport winds will improve ventilation conditions late in the day. OUTLOOK (SATURDAY-MONDAY) The upper-level ridge will weaken and continue to slowly shift eastward. Transport winds are expected to be light Saturday, before turning strongly onshore Sunday, in response to an approaching upper-level trough and surface cold front. That will improve ventilation conditions. Some showers are possible late Sunday and Monday, with the passage of an upper-level trough. 2. DISPERSION FRIDAY Mixing height below 500 ft early rising to 1900 - 2900 ft by late morning. Afternoon mixing height rises to 3500 - 4500 ft then lowers below 1000 ft during the evening. Transport wind light and variable and controlled by local terrain. Transport wind increases to W to NW at 5 - 9 mph during the evening. Surface wind light and variable and controlled by local terrain. OUTLOOK: SATURDAY Mixing height below 1000 ft early rising to 1500 - 2500 ft by late morning rising to 3500 - 4500 ft during the afternoon. Transport wind light and variable during the morning becoming SSW to WSW at 5 - 9 mph during the afternoon. Surface wind light and variable. SUNDAY Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning rising to 4500 - 5000 ft during the afternoon. Transport wind SW to W at 6 - 10 mph. Surface wind SW to W at 4 - 8 mph during the morning becoming WSW to WNW at 9 - 15 mph during the afternoon. MONDAY Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning rising to 4500 - 5000 ft during the afternoon. Transport wind W to NW at 8 - 12 mph during the morning becoming WNW to NNW at 10 - 20 mph during the afternoon. Surface wind W to NW at 6 - 10 mph. 3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER RANGE PORTION OF ZONE 624 This instruction is valid for burning conducted on Friday, October 1, 2010. ================================================================== Delay ignitions until 11 a.m. Avoid ignitions within 20 miles in all directions of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs. Recommend against burning units that will smolder significantly overnight. Complete ignitions by 4 p.m. ============================================================== 4. SPECIAL NOTE: The smoke management forecaster is available at (503) 945-7401. The smoke management forecaster is available to discuss specific burns. The duty forecaster phone number is (503) 945-7401. Please call this number and not individual's numbers to discuss daily burning. Please avoid calling before 8 a.m. and between 2 to 3 p.m. This forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml -------------- next part -------------- An HTML attachment was scrubbed... URL: