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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, May 19, 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> THURSDAY</div>
<div style="padding-left: 36pt; "><font face="Consolas, monospace"> </font></div>
<div style="padding-left: 36pt; ">A complex upper low pressure area continues in the Gulf of Alaska. A portion deepens and upper flow backs gradually from westerly to southwesterly by late in the day. Transport winds will be generally southwesterly except
that just light southwest through northwest transport winds are likely in southwestern Oregon. With continued cool air aloft (freezing level down to 3500 feet in the north, 4500 feet in the south), mixing heights should be quite high for good smoke dispersal
conditions. </div>
<div style="padding-left: 36pt; "> </div>
<div> OUTLOOK (FRIDAY-SUNDAY) </div>
<div style="padding-left: 36pt; "><font face="Consolas, monospace"> </font></div>
<div style="padding-left: 36pt; ">The upper level low moves to off the Washington coast on Friday supporting another weak Pacific front. This will move into western Oregon early for periods of rain throughout the day. On Saturday the upper level low drifts
eastward with enough moisture to continue for scattered showers. By Sunday, as the upper low moves east of the area, upper level flow becomes dry northerly and the showers end for a generally dry day. Transport winds will be mostly light and variable. Mixing
heights should be high enough throughout the outlook period for fair to good smoke dispersal conditions. </div>
<div style="padding-left: 36pt; "> </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 4200 - 5000 ft.</div>
<div>Transport wind SW to WSW at 10 - 22 mph.</div>
<div>Surface wind SSW to WSW at 9 - 15 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height above 5000 ft.</div>
<div>Transport wind similar to morning.</div>
<div>Surface wind similar to morning.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 3000 - 4000 ft.</div>
<div>Transport wind similar to afternoon.</div>
<div>Surface wind SSW to WSW at 6 - 12 mph.</div>
<div> </div>
<div>Zone 605-611 (North Cascades):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 3400 - 4400 ft.</div>
<div>Transport wind SSW to SW at 10 - 16 mph.</div>
<div>Surface wind SSW to SW at 10 - 16 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising above 5000 ft.</div>
<div>Transport wind SSW to W at 6 - 12 mph.</div>
<div>Surface wind SSW to W at 6 - 12 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2800 - 3800 ft.</div>
<div>Transport wind SSE to SW at 5 - 9 mph.</div>
<div>Surface wind S to SW at 4 - 8 mph.</div>
<div> </div>
<div>Zone 615-620 (South Coast Range):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 3600 - 4600 ft.</div>
<div>Transport wind SW to WNW at 6 - 12 mph.</div>
<div>Surface wind SW to W at 6 - 12 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height above 5000 ft.</div>
<div>Transport wind WSW to WNW at 10 - 18 mph.</div>
<div>Surface wind WSW to WNW at 9 - 15 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2000 - 3000 ft.</div>
<div>Transport wind SW to W at 8 - 14 mph.</div>
<div>Surface wind SW to WNW at 6 - 12 mph.</div>
<div> </div>
<div>Zone 616-623 (South Cascades):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 1500 - 2500 ft.</div>
<div>Transport wind SSW to WSW at 4 - 8 mph.</div>
<div>Surface wind SSW to WSW at 5 - 9 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising above 5000 ft.</div>
<div>Transport wind SW to WNW at 5 - 9 mph.</div>
<div>Surface wind WSW to WNW at 5 - 9 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 3100 - 4100 ft.</div>
<div>Transport wind becomes light and variable.</div>
<div>Surface wind becomes light and variable and controlled by local terrain.</div>
<div> </div>
<div>OUTLOOK:</div>
<div> </div>
<div>FRIDAY</div>
<div>Mixing height 2400 to 3400 ft during the morning rising to 3200 to 4200 ft during the afternoon. In the Coast Range transport wind SSW to WSW at 10 - 16 mph during the morning becoming WSW to WNW at 8 - 14 mph during the afternoon. In the Cascades transport
wind S to SW at 8 - 12 mph during the morning becoming SSW to WSW at 8 - 12 mph during the afternoon. Surface wind SSW to SW at 8 - 12 mph during the morning becoming SW to W at 6 - 12 mph during the afternoon.</div>
<div> </div>
<div>SATURDAY</div>
<div>Mixing height below 1000 ft early rising to 1600 to 2600 ft by late morning rising to 3500 to 4500 ft during the afternoon. Transport wind light and variable during the morning becoming WNW to NNW at 6 - 10 mph during the afternoon. Surface wind light
and variable.</div>
<div> </div>
<div>SUNDAY</div>
<div>Mixing height below 1000 ft early rising to 1600 to 2600 ft by late morning rising to 4100 to 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 Thursday, May 20, 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. North of Tillamook in Zone 601, use standard guidance matrix. (See section 5 below.)</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. North of T3N in Zone 602, use standard guidance matrix. (See section 5 below.) Units may be 750 tons or less, spaced 5 miles apart, south of the Siuslaw River in
Zone 603. Higher tonnage is possible south of T35S in Zone 620. Call the forecaster.</div>
<div> </div>
<div>Zone 615</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 west of R8W</div>
<div>Units should be 1200 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster.</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. Higher tonnage is possible south of T29S. Call the forecaster.</div>
<div> </div>
<div>Zone 618</div>
<div>Use standard guidance matrix. (See section 5 below.)</div>
<div> </div>
<div>Zone 619</div>
<div>Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div> </div>
<div>Cascades</div>
<div> </div>
<div>All zones except zone 611</div>
<div>Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T18S through T22S in Zone 608 units should be 1000 tons or less, spaced 5 miles apart.</div>
<div> </div>
<div>Zone 611</div>
<div>Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div> </div>
<div>Siskiyous</div>
<div>Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.</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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