FNUS76 KSEW 241509 FWSSEW SPOT FORECAST FOR RANGE 88...FT LEWIS FORESTRY NATIONAL WEATHER SERVICE SEATTLE WA 809 AM PDT TUE AUG 24 2010 FORECAST IS BASED ON IGNITION TIME OF 1100 PDT ON AUGUST 24. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE IN SEATTLE. .DISCUSSION...A THERMAL TROUGH OF LOW PRESSURE WILL REMAIN OVER WESTERN WASHINGTON THROUGH WEDNESDAY MORNING. FOR THE FIRE AREA THIS WILL RESULT IN RATHER WARM TEMPERATURES AND LOW RELATIVE HUMIDITIES THIS AFTERNOON. THE LIGHT AND VARIABLE WIND THIS MORNING WILL BECOME NORTHERLY THIS AFTERNOON WITH NORTH TO NORTHEAST TRANSPORT WINDS. DUE TO AN UPPER LEVEL INVERSION...THE MIXING HEIGHT WILL BE LOWER THAN YESTERDAY...GENERALLY BELOW 3000 FT. WEDNESDAY WILL START OUT SIMILAR TO TODAY WITH A QUICK WARM UP AND LOW RH VALUES...BUT A WESTERLY BREEZE WILL KICK IN IN THE AFTERNOON AS ONSHORE FLOW DEVELOPS. FORECAST FOR 20 FOOT WIND SPEED (VALLEYS AND RIDGE TOPS) ARE 10 MINUTE AVERAGES REFLECTING RAWS WINDS. .TODAY... SKY/WEATHER.........SUNNY. MAX TEMPERATURE.....AROUND 84. MIN HUMIDITY........25 PERCENT. WIND (20 FT)........LIGHT WIND BECOMING NORTH 2 TO 4 MPH THIS AFTERNOON. MIXING HEIGHT.......400 FT AGL INCREASING TO 2800 FT AGL. TRANSPORT WINDS.....NORTH TO NORTHEAST AROUND 10 MPH. HAINES INDEX........4 OR LOW. .TONIGHT... MIN TEMPERATURE.....AROUND 49. MAX HUMIDITY........89 PERCENT. WIND (20 FT)........NORTH WINDS 2 TO 4 MPH THIS EVENING BECOMING LIGHT. MIXING HEIGHT.......2800 FT AGL DECREASING TO 400 FT AGL LATE IN THE EVENING. TRANSPORT WINDS.....NORTHEAST AROUND 9 MPH. HAINES INDEX........4 OR LOW. .FORECAST DAYS 3 THROUGH 5... .THURSDAY... MOSTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS 4 TO 6 MPH. .FRIDAY... MOSTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE MID 60S. WEST WINDS 3 TO 7 MPH. .SATURDAY... MOSTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE MID 60S. NORTH WINDS 3 TO 5 MPH. $$ FORECASTER...CERNIGLIA REQUESTED BY...DAN LEEPER TYPE OF REQUEST...PRESCRIBED .TAG 20100824.RANGE.01/SEW