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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: Tuesday, May 4, 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> WEDNESDAY</div>
<div> </div>
<div style="padding-left: 36pt; ">An upper level disturbance in the west-northwesterly flow aloft develops into a closed low over Washington by morning. This will produce areas of light rain throughout the region. Once again snow is possible as low as 1500
feet ASL. Precipitation amounts will be less than a quarter of an inch in the north and less than a tenth of an inch in the south. Mixing heights should be above 5000 feet for good smoke dispersal conditions with a generally northwesterly transport wind.</div>
<div style="padding-left: 36pt; "> </div>
<div> OUTLOOK (THURSDAY-SATURDAY)</div>
<div> </div>
<div style="padding-left: 36pt; ">The upper low moves east and weak ridging aloft develops over the area by Thursday. The showers will end. Maximum mixing heights will remain high but very light transport winds might limit burn opportunities. Friday and
Saturday will see light westerly flow aloft with dry conditions. Winds will be generally north or northeasterly Friday except in the Rogue basin where winds will remain light and variable. By Saturday transport winds will be picking up from the northwest
and maximum mixing height will remain high. Clearing skies and nighttime inversions will hold any residual smoke close to the ground during the overnight period. </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 3300 - 4300 ft.</div>
<div>Transport wind WNW to NNW at 8 - 14 mph.</div>
<div>Surface wind WNW to NNW at 6 - 12 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising above 5000 ft.</div>
<div>Transport wind WNW to NNW at 10 - 18 mph.</div>
<div>Surface wind similar to morning.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2300 - 3300 ft.</div>
<div>Transport wind similar to afternoon.</div>
<div>Surface wind similar to afternoon.</div>
<div> </div>
<div>Zone 605-611 (North Cascades):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 1600 - 2600 ft.</div>
<div>Transport wind light and variable and controlled by local terrain.</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 WSW to NW at 5 - 9 mph.</div>
<div>Surface wind increases to WSW to WNW at 5 - 9 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2400 - 3400 ft.</div>
<div>Transport wind becomes light and variable and controlled by local terrain.</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 3100 - 4100 ft.</div>
<div>Transport wind NW to N at 6 - 12 mph.</div>
<div>Surface wind NW to N at 6 - 12 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising above 5000 ft.</div>
<div>Transport wind NW to N at 9 - 15 mph.</div>
<div>Surface wind NW to N at 8 - 14 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 2000 - 3000 ft.</div>
<div>Transport wind similar to afternoon.</div>
<div>Surface wind NW to N at 6 - 10 mph.</div>
<div> </div>
<div>Zone 616-623 (South Cascades):</div>
<div> </div>
<div>MORNING</div>
<div>Mixing height 1700 - 2700 ft.</div>
<div>Transport wind W to NW at 8 - 12 mph.</div>
<div>Surface wind W to NW at 8 - 12 mph.</div>
<div> </div>
<div>AFTERNOON</div>
<div>Mixing height rising above 5000 ft.</div>
<div>Transport wind NW to N at 6 - 12 mph.</div>
<div>Surface wind NW to NNW at 8 - 12 mph.</div>
<div> </div>
<div>EVENING</div>
<div>Mixing height 1000 - 1900 ft.</div>
<div>Transport wind similar to afternoon.</div>
<div>Surface wind NW to N at 5 - 9 mph.</div>
<div> </div>
<div>OUTLOOK:</div>
<div> </div>
<div>THURSDAY</div>
<div>Mixing height 2400 to 3400 ft during the morning rising above 5000 ft during the afternoon. Transport wind N to NE at 5 - 9 mph. Surface wind NNE to ENE at 4 - 8 mph during the morning becoming NNW to NNE at 8 - 12 mph during the afternoon.</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 during the morning becoming NNW to NNE at 4 - 8 mph during the afternoon. Surface wind light and
variable.</div>
<div> </div>
<div>SATURDAY</div>
<div>Mixing height below 1000 ft early rising to 4300 to 5000 ft by late morning rising above 5000 ft during the afternoon. Transport wind light and variable during the morning becoming NW to N at 4 - 8 mph during the afternoon. 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 Wednesday, May 5, 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. Higher tonnage is possible south of Waldport in Zone 612. Call the forecaster.</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, 606, 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 5 miles apart. South of T30S in Zone 616 units should
be 500 tons or less, spaced 5 miles apart.</div>
<div> </div>
<div>Zone 610 and 611</div>
<div>Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.</div>
<div> </div>
<div>Zone 620 and 622</div>
<div>Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. East of R2W in Zone 622, 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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