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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: Monday, May 3, 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> TUESDAY</div>
<div> </div>
<div style="padding-left: 36pt; ">A very cool air mass for this time of year will remain over the region. Temperatures will be about 10 degrees below average and the freezing level will be down to below 2000 feet ASL in most areas. Models indicate most showers
will be confined to northern zones although moisture will be limited. Cool air aloft will keep the atmosphere unstable for good smoke dispersal conditions. </div>
<div style="padding-left: 36pt; "> </div>
<div> OUTLOOK (WEDNESDAY-FRIDAY)</div>
<div> </div>
<div style="padding-left: 36pt; ">Temperatures begin to recover a bit but below average readings will continue Wednesday. Widely scattered showers are still likely and smoke dispersal conditions will remain good. Weak upper level ridging on Thursday will
ensure dry weather. Cool air aloft and daytime surface heating will push daytime mixing heights to above 5000 feet but this will be offset by quite light transport winds that may limit burning in some areas. Light winds and clearing skies mean nighttime inversions
to trap smoke near the ground during the overnight period. By Friday temperatures should be back to near normal. A weak disturbance moving through a generally westerly flow aloft may produce a few mountain showers. Mixing heights remain high for good smoke
dispersal conditions. </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 2800 - 3800 ft.</div>
<div>Transport wind WSW to WNW at 9 - 15 mph.</div>
<div>Surface wind WSW to WNW at 6 - 12 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising above 5000 ft.</div>
<div>Transport wind W to NW at 9 - 15 mph.</div>
<div>Surface wind W to NW at 6 - 12 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height lowers below 1000 ft after sunset.</div>
<div>Transport wind WNW to NW at 10 - 16 mph.</div>
<div>Surface wind W to NNW at 6 - 10 mph.</div>
<div> </div>
<div>Zone 605-611 (North Cascades):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 1300 - 2300 ft.</div>
<div>Transport wind SSW to WSW at 6 - 12 mph.</div>
<div>Surface wind SSW to SW at 8 - 12 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising to 4000 - 5000 ft.</div>
<div>Transport wind becomes light and variable.</div>
<div>Surface wind shifts to WSW to NW at 4 - 8 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2400 - 3400 ft.</div>
<div>Transport wind similar to afternoon.</div>
<div>Surface wind becomes light and variable and controlled by local terrain.</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 light and variable.</div>
<div>Surface wind light and variable and controlled by local terrain.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising above 5000 ft.</div>
<div>Transport wind increases to NW to NNW at 10 - 22 mph.</div>
<div>Surface wind increases to NW to NNW at 10 - 20 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2300 - 3300 ft.</div>
<div>Transport wind NW to N at 10 - 16 mph.</div>
<div>Surface wind NW to N at 8 - 12 mph.</div>
<div> </div>
<div>Zone 616-623 (South Cascades):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 3200 - 4200 ft.</div>
<div>Transport wind light and variable.</div>
<div>Surface wind WNW to NNW at 4 - 8 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising above 5000 ft.</div>
<div>Transport wind increases to WNW to NNW at 8 - 14 mph.</div>
<div>Surface wind increases to WNW to NNW at 10 - 16 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 1700 - 2700 ft.</div>
<div>Transport wind NW to N at 8 - 12 mph.</div>
<div>Surface wind NW to N at 8 - 12 mph.</div>
<div> </div>
<div>OUTLOOK:</div>
<div> </div>
<div>WEDNESDAY</div>
<div>Mixing height 2200 to 3200 ft during the morning rising above 5000 ft during the afternoon. Transport wind NW to N at 4 - 8 mph. Surface wind WNW to NNW at 4 - 8 mph during the morning becoming NNW to NNE at 8 - 12 mph during the afternoon.</div>
<div> </div>
<div>THURSDAY</div>
<div>Mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising above 5000 ft during the afternoon. Transport wind light and variable. Surface wind light and variable.</div>
<div> </div>
<div>FRIDAY</div>
<div>Mixing height below 1000 ft early rising to 3500 to 4500 ft by late morning rising above 5000 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 Tuesday, May 4, 2010.</div>
<div>=================================================================</div>
<div> </div>
<div>Coast Range</div>
<div> </div>
<div>Zone 601 and 612</div>
<div>Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less.</div>
<div> </div>
<div>Zone 602, 603, and 620</div>
<div>Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Avoid burning in or near corridors. Higher tonnage is possible south of the Siuslaw River in Zone 603. Call the forecaster. Higher tonnage is possible south of
the Rogue River in Zone 620. Call the forecaster.</div>
<div> </div>
<div>Zone 615, 618, and 619</div>
<div>Use standard guidance matrix. (See section 5 below.) Avoid burning directly upwind of the North Bend/Coos Bay SSRA.</div>
<div> </div>
<div>Zone 616 west of R8W</div>
<div>Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div>Zone 616 east of R9W</div>
<div>Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units to 500 tons or less south of T30S.</div>
<div> </div>
<div> </div>
<div>Cascades</div>
<div> </div>
<div>Zone 605 and 606</div>
<div>Units should be 500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div>Zone 607, 608, 609, 616, 617, and 623</div>
<div>Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T15S through T20S in Zone 608 units should be 1000 tons or less, spaced 8 miles apart.</div>
<div> </div>
<div>Zone 610 and 611</div>
<div>Units should be 1500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div>Zone 620</div>
<div>Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div>Zone 622</div>
<div>Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. East of R2W, use standard guidance matrix. (See section 5 below.)</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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