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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: Saturday, April 24, 2010 2:30 PM Nick Yonker</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; ">Upper level trough will move by to the east tonight and give way to a ridge on Sunday. Surface high pressure will build in as well and calm the winds overnight. Air mass stabilizes as warming air moves in aloft. Expect mostly
sunny skies and warm temperatures during the afternoon after a chilly morning. With weak wind flow and a stabilizing air mass, smoke dispersion will be mostly poor to fair.</div>
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<div> OUTLOOK (MONDAY - WEDNESDAY)</div>
<div> </div>
<div style="padding-left: 36pt; ">Upper level ridge slips by to the east early Monday as the next frontal system and major upper level trough move into the state. Cold front will bring rain into the state beginning Monday morning and spread inland through
the afternoon. Wind flow will increase markedly from the south, bringing greatly improved smoke dispersion. Front will move through Monday evening as a cold, upper level trough settles over the state Tuesday and Wednesday. Expect plenty of showers and possible
thundershowers under the chilly air mass. Air mass destabilizes Monday and remains unstable through the remainder of the period, providing good to excellent smoke dispersion.</div>
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<div>2. DISPERSION</div>
<div> </div>
<div>Zone 601, 602, 603 and 612 (North Coast Range):</div>
<div> </div>
<div>MORNING</div>
<div style="padding-left: 36pt; ">Mixing height below 1000 ft early rising to 1700 - 2700 ft by late morning.</div>
<div style="padding-left: 36pt; ">Transport wind ENE to ESE at 4 - 8 mph.</div>
<div style="padding-left: 36pt; ">Surface wind light and variable but favors NE to SE and controlled by local terrain.</div>
<div><font face="Consolas, monospace"> </font></div>
<div>AFTERNOON</div>
<div style="padding-left: 36pt; ">Mixing height rising to 3000 - 4000 ft.</div>
<div style="padding-left: 36pt; ">Transport wind becomes light and variable but favors E to S.</div>
<div style="padding-left: 36pt; ">Surface wind similar to morning.</div>
<div><font face="Consolas, monospace"> </font></div>
<div>EVENING</div>
<div style="padding-left: 36pt; ">Mixing height lowers below 1000 ft.</div>
<div style="padding-left: 36pt; ">Transport wind increases to SSE to SSW at 5 - 9 mph.</div>
<div style="padding-left: 36pt; ">Surface wind similar to afternoon.</div>
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<div>Zone 605-611 (North Cascades):</div>
<div> </div>
<div>MORNING</div>
<div style="padding-left: 36pt; ">Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning.</div>
<div style="padding-left: 36pt; ">Transport wind light and variable.</div>
<div style="padding-left: 36pt; ">Surface wind light and variable but favors NNE to E and controlled by local terrain.</div>
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<div>AFTERNOON</div>
<div style="padding-left: 36pt; ">Mixing height 3500 - 4500 ft.</div>
<div style="padding-left: 36pt; ">Transport wind similar to morning.</div>
<div style="padding-left: 36pt; ">Surface wind similar to morning.</div>
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<div>EVENING</div>
<div style="padding-left: 36pt; ">Mixing height lowers below 1000 ft.</div>
<div style="padding-left: 36pt; ">Transport wind increases to SSE to SSW at 4 - 8 mph.</div>
<div style="padding-left: 36pt; ">Surface wind similar to afternoon.</div>
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<div>Zone 615-620 (South Coast Range):</div>
<div> </div>
<div>MORNING</div>
<div style="padding-left: 36pt; ">Mixing height below 1000 ft early rising to 2200 - 3200 ft by late morning.</div>
<div style="padding-left: 36pt; ">Transport wind light and variable.</div>
<div style="padding-left: 36pt; ">Surface wind light and variable but favors E to S and controlled by local terrain.</div>
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<div>AFTERNOON</div>
<div style="padding-left: 36pt; ">Mixing height 3000 - 4000 ft.</div>
<div style="padding-left: 36pt; ">Transport wind shifts to SSE to SW at 6 - 10 mph.</div>
<div style="padding-left: 36pt; ">Surface wind increases to WSW to WNW at 5 - 9 mph.</div>
<div><font face="Consolas, monospace"> </font></div>
<div>EVENING</div>
<div style="padding-left: 36pt; ">Mixing height lowers below 1000 ft.</div>
<div style="padding-left: 36pt; ">Transport wind similar to afternoon.</div>
<div style="padding-left: 36pt; ">Surface wind becomes light and variable but favors E to S and controlled by local terrain.</div>
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<div>Zone 616-623 (South Cascades):</div>
<div> </div>
<div>MORNING</div>
<div style="padding-left: 36pt; ">Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning.</div>
<div style="padding-left: 36pt; ">Transport wind light and variable but favors SE to SW.</div>
<div style="padding-left: 36pt; ">Surface wind light and variable and controlled by local terrain.</div>
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<div>AFTERNOON</div>
<div style="padding-left: 36pt; ">Mixing height rising above 5000 ft.</div>
<div style="padding-left: 36pt; ">Transport wind increases to SW to W at 4 - 8 mph.</div>
<div style="padding-left: 36pt; ">Surface wind increases to WSW to NW at 4 - 8 mph.</div>
<div><font face="Consolas, monospace"> </font></div>
<div>EVENING</div>
<div style="padding-left: 36pt; ">Mixing height lowers below 1000 ft.</div>
<div style="padding-left: 36pt; ">Transport wind becomes light and variable but favors SE to SW.</div>
<div style="padding-left: 36pt; ">Surface wind becomes light and variable and controlled by local terrain.</div>
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<div>OUTLOOK:</div>
<div> </div>
<div>MONDAY</div>
<div style="padding-left: 36pt; ">Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising above 5000 ft during the afternoon. Transport wind S to SSW at 10 - 22 mph during the morning becoming S to SSW at 20 - 35 mph during the afternoon.
Surface wind SE to SSW at 6 - 12 mph during the morning becoming SSE to SSW at 12 - 22 mph during the afternoon.</div>
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<div>TUESDAY</div>
<div style="padding-left: 36pt; ">Mixing height 3500 to 4500 ft during the morning rising above 5000 ft during the afternoon. Transport wind SW to W at 13 - 25 mph. Surface wind WSW to WNW at 10 - 20 mph.</div>
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<div>WEDNESDAY</div>
<div style="padding-left: 36pt; ">Mixing height above 5000 ft throughout the day. Transport wind WSW to WNW at 13 - 25 mph. Surface wind W to NW at 8 - 12 mph.</div>
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<div>3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA</div>
<div>These instructions are valid for burning conducted on Sunday, April 25, 2010.</div>
<div>=================================================================</div>
<div> </div>
<div>Coast Range</div>
<div> </div>
<div>Zone 601, 612, and 616 east of R9W</div>
<div style="padding-left: 36pt; ">Units should be 750 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. Higher tonnage is possible south of T29S in Zone 616. Call the forecaster.</div>
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<div>Zone 602 and 603</div>
<div style="padding-left: 36pt; ">Units should be 300 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs.</div>
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<div>Zone 615 and 620</div>
<div style="padding-left: 36pt; ">Units should be 1500 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs.</div>
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<div>Zone 616 west of R8W</div>
<div style="padding-left: 36pt; ">Units should be 1200 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster.</div>
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<div>Zone 618 and 619</div>
<div style="padding-left: 36pt; ">Use standard guidance matrix. (See section 5 below.)</div>
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<div>Cascades</div>
<div> </div>
<div>Zone 605 and 606</div>
<div style="padding-left: 36pt; ">Units should be 300 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.</div>
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<div>Zone 607, 608, 616, 620, and 622</div>
<div style="padding-left: 36pt; ">Units should be 1000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.</div>
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<div>Zone 609, 617, and 623</div>
<div style="padding-left: 36pt; ">Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate.</div>
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<div>Zone 610 and 611</div>
<div style="padding-left: 36pt; ">Units should be 1500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.</div>
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<div>Siskiyous</div>
<div style="padding-left: 36pt; ">Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.</div>
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<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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