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<div>SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS</div>
<div>SALEM FORESTRY WEATHER CENTER</div>
<div>OREGON DEPARTMENT OF FORESTRY</div>
<div> </div>
<div>ISSUED: Wednesday, April 21, 2010 2:30 PM Jim Little</div>
<div> </div>
<div>1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623</div>
<div> </div>
<div style="padding-left: 36pt; ">An upper level low pressure area, centered over southern Nevada, is maintaining a very cool air mass over Oregon and continuing to circulate enough moisture over the region for widely scattered showers. The flow aloft will
dry out and turn northwesterly, tonight and Thursday, as the upper level trough slides southeastward to over Utah. Onshore flow will keep skies mostly cloudy through Thursday morning with slow clearing in the afternoon. Mixing heights should be near 4000
feet with north-northwesterly transport winds. The freezing level will rise to near 8000 feet by Thursday afternoon.</div>
<div style="padding-left: 36pt; "> </div>
<div> OUTLOOK (FRIDAY-SUNDAY)</div>
<div> </div>
<div style="padding-left: 36pt; ">A weak weather system will push into southern British Columbia on Friday, with increasing clouds and a chance for light rain late in the afternoon…mainly northern zones. Transport winds will turn more westerly in the northern
zones with higher mixing heights. An upper level trough is forecast to slide across eastern Washington and northern Idaho on Saturday with the flow aloft turning northwesterly. A weak upper-level ridge is forecast to move over western Oregon Sunday for dry
and warmer weather. Mixing heights will drop to around 3000 feet with surface and transport winds becoming more northerly.</div>
<div><font face="Consolas, monospace"> </font></div>
<div>2. DISPERSION</div>
<div> </div>
<div>Zone 601, 602, 603 and 612 (North Coast Range):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 3000 - 4000 ft.</div>
<div>Transport wind NW to N at 9 - 15 mph.</div>
<div>Surface wind NW to N at 8 - 12 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height 3600 - 4600 ft.</div>
<div>Transport wind NW to N at 12 - 22 mph.</div>
<div>Surface wind NW to N at 10 - 20 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2300 - 3300 ft.</div>
<div>Transport wind similar to afternoon.</div>
<div>Surface wind NW to N at 8 - 14 mph.</div>
<div> </div>
<div>Zone 605-611 (North Cascades):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 2000 - 3000 ft.</div>
<div>Transport wind light and variable but favors NNW.</div>
<div>Surface wind light and variable but favors NNW and controlled by local terrain.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising to 3500 - 4500 ft.</div>
<div>Transport wind increases to NW to NNE at 6 - 12 mph.</div>
<div>Surface wind increases to NNW to N at 8 - 12 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 3200 - 4200 ft.</div>
<div>Transport wind similar to afternoon.</div>
<div>Surface wind similar to afternoon.</div>
<div> </div>
<div>Zone 615-620 (South Coast Range):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 3000 - 4000 ft.</div>
<div>Transport wind N to NE at 10 - 18 mph.</div>
<div>Surface wind N to NE at 10 - 16 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height 3500 - 4500 ft.</div>
<div>Transport wind NNW to NNE at 9 - 15 mph.</div>
<div>Surface wind NNW to NNE at 9 - 15 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2100 - 3100 ft.</div>
<div>Transport wind similar to afternoon.</div>
<div>Surface wind NW to NNE at 6 - 10 mph.</div>
<div> </div>
<div>Zone 616-623 (South Cascades):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 2500 - 3500 ft.</div>
<div>Transport wind NNW to NNE at 8 - 14 mph.</div>
<div>Surface wind NNW to NNE at 9 - 15 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height 3300 - 4300 ft.</div>
<div>Transport wind NNW to NNE at 10 - 20 mph.</div>
<div>Surface wind similar to morning.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 1900 - 2900 ft.</div>
<div>Transport wind N to NE at 10 - 16 mph.</div>
<div>Surface wind NNW to NE at 6 - 12 mph.</div>
<div> </div>
<div>OUTLOOK:</div>
<div> </div>
<div>FRIDAY</div>
<div>Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising to 3800 to 4800 ft during the afternoon. Transport wind light and variable during the morning becoming WSW to WNW at 10 - 18 mph during the afternoon. Surface wind light
and variable during the morning becoming WSW to WNW at 10 - 18 mph during the afternoon.</div>
<div> </div>
<div>SATURDAY</div>
<div>Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 3500 to 4500 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.</div>
<div> </div>
<div>SUNDAY</div>
<div>Mixing height below 1000 ft early rising to 1500 to 2500 ft by late morning rising to 2500 to 3500 ft during the afternoon. Transport wind light and variable. Surface wind light and variable.</div>
<div> </div>
<div>3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA</div>
<div>These instructions are valid for burning conducted on Thursday, April 22, 2010.</div>
<div>=================================================================</div>
<div> </div>
<div>Coast Range</div>
<div> </div>
<div>Zone 601, 612, and 616 east of R9W</div>
<div>Units should be 750 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. Higher tonnage is possible south of Waldport in Zone 612. Call the forecaster. Restrict units to 500
tons or less south of T30S in Zone 616.</div>
<div> </div>
<div>Zone 602 and 603</div>
<div>Units should be 300 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Avoid burning in or near corridors. Higher tonnage is possible south of T17S in Zone 603. Call the forecaster.</div>
<div> </div>
<div>Zone 615</div>
<div>Units should be 2000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div>Zone 616 west of R8W</div>
<div>Units should be 1200 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div>Zone 618 and 619</div>
<div>Use standard guidance matrix. (See section 5 below.)</div>
<div> </div>
<div>Zone 620</div>
<div>Units should be 500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of the Rogue River. Call the forecaster.</div>
<div> </div>
<div> </div>
<div>Cascades</div>
<div> </div>
<div>Zone 605, 606, 607, 608, 609, 611, 617, and 623</div>
<div>Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. Verify transport winds away from SSRA if burning within 10 miles of the SSRA in Zone 605 and 606. South of T30S in Zone 617 units
should be 500 tons or less, spaced 10 miles apart.</div>
<div> </div>
<div>Zone 610</div>
<div>Units should be 1000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div>Zone 616</div>
<div>Units should be 1000 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. South of T30S units should be 500 tons or less, spaced 10 miles apart.</div>
<div> </div>
<div>Zone 620 and 622</div>
<div>No burning allowed.</div>
<div> </div>
<div> </div>
<div>Siskiyous</div>
<div>Use standard guidance matrix. (See section 5 below.)</div>
<div> </div>
<div>==============================================================</div>
<div>4. SPECIAL NOTE:</div>
<div> </div>
<div> Call the smoke management duty forecaster at (503) 945-7401 to</div>
<div> discuss burning. Please do not call individual's numbers to </div>
<div> discuss daily burning. If the forecaster is not available, </div>
<div> leave a message and he will return your call as soon as possible.</div>
<div> Avoid calling between 2 to 2:30 p.m. </div>
<div> </div>
<div> The forecast is available on the Internet at: </div>
<div> <a href="http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management">http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management</a> </div>
<div> </div>
<div> Please ensure your units have been planned and accomplished by checking: </div>
<div> <a href="http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml">http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml</a> </div>
<div> </div>
<div> </div>
<div>5. STANDARD GUIDANCE MATRIX:</div>
<div> </div>
<div> * Greater than 5000 ft mixing height: No burning within 5 miles of </div>
<div> downwind SSRA. Maximum 100 tons per mile from downwind SSRA. </div>
<div> Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA.</div>
<div> </div>
<div> * 3000 - 5000 ft mixing height: No burning within 10 miles of </div>
<div> downwind SSRA. Maximum 75 tons per mile from downwind SSRA. </div>
<div> Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA.</div>
<div> </div>
<div> * Less than 3000 ft mixing height: No burning within 15 miles of </div>
<div> downwind SSRA. Maximum 50 tons per mile from downwind SSRA. </div>
<div> Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA.</div>
<div> </div>
<div> * All exceptions must be coordinated with the duty forecaster </div>
<div> prior to ignition.</div>
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