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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText><span style='font-family:"Courier New"'>SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>SALEM FORESTRY WEATHER CENTER<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>OREGON DEPARTMENT OF FORESTRY<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>ISSUED: Wednesday, May 4, 2011 2:40 PM Pete Parsons<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>1. DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>THURSDAY<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText style='line-height:115%'><span style='font-size:11.0pt;line-height:115%;font-family:"Courier New"'>An upper-level ridge is forecast to flatten and shift eastward, to over the northern Rockies, as a weak upper-level trough moves across the Pacific Northwest. Moisture is limited, so expect only some increase in cloudiness but no precipitation. The surface thermal trough will also weaken and shift east of the region. Temperatures will start out warmer than on Wednesday but likely top out at about the same level, as increasing westerly transport winds usher cooler marine air into the region. Cooling aloft and daytime heating will combine for good afternoon mixing.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>OUTLOOK (FRIDAY-SUNDAY)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'> <o:p></o:p></span></p><p class=MsoPlainText style='line-height:115%'><span style='font-size:11.0pt;line-height:115%;font-family:"Courier New"'>A westerly flow aloft is forecast for Friday, with the region between storm systems. Low level transport winds will be generally west-southwesterly. Afternoon smoke dispersal conditions will continue to be good.<o:p></o:p></span></p><p class=MsoPlainText style='line-height:115%'><span style='font-size:11.0pt;line-height:115%;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText style='line-height:115%'><span style='font-size:11.0pt;line-height:115%;font-family:"Courier New"'>A strengthening westerly jet stream will direct another cold front across the Pacific Northwest Friday night, with a cool upper-level trough moving onshore Saturday. Expect mostly cloudy skies Saturday with a chance of showers by the afternoon. Temperatures will drop back to near or slightly below normal. With further cooling aloft, maximum mixing heights are again likely to exceed 5000 feet and with brisk west-southwesterly transport winds.<o:p></o:p></span></p><p class=MsoPlainText style='line-height:115%'><span style='font-size:11.0pt;line-height:115%;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText style='line-height:115%'><span style='font-size:11.0pt;line-height:115%;font-family:"Courier New"'>By Sunday, another unseasonably cold upper-level trough will make camp over the Pacific Northwest. Rain and snow showers will be widespread with precipitation totals over .10 inches common. The snow level will drop to 4-5000 feet late. Cold air aloft should make for good mixing with brisk west-northwesterly transport winds.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>2. DISPERSION<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>THURSDAY<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Mixing height below 500 ft early rising to 3500 - 4500 ft by late morning. Afternoon mixing height rises above 5000 ft then lowers to 1500 - 2500 ft during the evening.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Transport wind WSW to WNW at 10 - 20 mph during the morning. Transport wind increases to WSW to WNW at 15 - 25 mph during the afternoon and evening.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Surface wind WSW to WNW at 8 - 14 mph during the morning. Surface wind increases to WSW to WNW at 10 - 20 mph during the afternoon then decreases to W to NW at 8 - 12 mph during the evening.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>OUTLOOK:<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>FRIDAY<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Mixing height below 1000 ft early rising to 3500 - 4500 ft by late morning rising above 5000 ft during the afternoon. Transport wind SW to WNW at 6 - 10 mph during the morning becoming WSW to WNW at 12 - 24 mph during the afternoon. Surface wind light and variable during the morning becoming WSW to WNW at 8 - 12 mph during the afternoon.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>SATURDAY<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Mixing height below 1000 ft early rising to 3500 - 4500 ft by late morning rising above 5000 ft during the afternoon. Transport wind SW to W at 8 - 12 mph during the morning becoming WSW to WNW at 10 - 22 mph during the afternoon. Surface wind SW to WNW at 4 - 8 mph.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>SUNDAY<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Mixing height 2800 - 3800 ft during the morning rising above 5000 ft during the afternoon. Transport wind W to WNW at 10 - 22 mph. Surface wind WSW to NW at 6 - 10 mph during the morning becoming WNW to NNW at 10 - 20 mph during the afternoon.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>3. BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> RANGE PORTION OF ZONE 624<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>This instruction is valid for burning conducted on Thursday, May 5, 2011.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>==================================================================<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Avoid ignitions within 12 miles to the WSW through NW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 20 miles to the WSW through NW in or near drainages leading to SSRAs. Complete ignitions by 6 p.m. <o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>==============================================================<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>4. SPECIAL NOTE:<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> The smoke management forecaster is available at (503)<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> 945-7401. The smoke management forecaster is available <o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> to discuss specific burns. The duty forecaster phone <o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> number is (503) 945-7401. Please call this number and <o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> not individual's numbers to discuss daily burning. Please<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> avoid calling before 8 a.m. and between 2 to 3 p.m. <o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> This forecast is available on the Internet at: <o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management <o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> Please ensure your units have been planned and accomplished by checking: <o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'> http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml <o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>