FNUS76 KSEW 261432 FWSSEW SPOT FORECAST FOR TA 7S PRAIRIE...FT LEWIS FORESTRY NATIONAL WEATHER SERVICE SEATTLE WA 732 AM PDT WED AUG 26 2009 FORECAST IS BASED ON IGNITION TIME OF 1030 MDT ON AUGUST 26. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE IN SEATTLE. .DISCUSSION...AN UPPER LEVEL HIGH PRESSURE RIDGE WILL BUILD OVER THE REGION TODAY...BRINGING A PRONOUNCED LAYER OF STABLE AIR ABOUT 2500 TO 3000 FEET OVER THE BURN TODAY. THE BUILDING HIGH PRESSURE ALOFT WILL CAUSE A SIGNIFICANT WARMING AND DRYING TREND. TONIGHT...SOUTHERLY FLOW ALOFT JUST ABOVE THE MIXED LAYER WILL INCREASE QUITE A BIT. FORECAST FOR 20 FOOT WIND SPEED (VALLEYS AND RIDGE TOPS) ARE 10 MINUTE AVERAGES REFLECTING RAWS WINDS. .TODAY... SKY/WEATHER.........MOSTLY SUNNY. CWR.................0%. MAX TEMPERATURE.....AROUND 79. MIN HUMIDITY........34 PERCENT. WIND (20 FT)........NORTH-NORTHWEST WIND 4 TO 6 MPH FOLLOWING IGNITION TIME. MIXING HEIGHT.......RISING TO 2800 FT AGL BY EARLY AFTERNOON. TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH. HAINES INDEX........MID-LEVEL....5 OR MODERATE. HIGH-LEVEL...3 OR VERY LOW. .TONIGHT... WIND (20 FT)........NORTH-NORTHEAST WIND 3 TO 5 MPH THIS EVENING... BECOMING CALM OR SOUTHEAST UNDER 3 MPH. MIXING HEIGHT.......LOWERING TO UNDER 200 FT AGL THIS EVENING. TRANSPORT WINDS.....NORTHEAST 5 MPH EARLY THIS EVENING...BECOMING SOUTHEAST 0 TO 5 MPH LATE THIS EVENING. $$ FORECASTER...HANER REQUESTED BY...DAN LEEPER TYPE OF REQUEST...PRESCRIBED .TAG 20090826.TA7SP.01/SEW