FNUS76 KSEW 121442
FWSSEW

SPOT FORECAST FOR TA-8...FT LEWIS FORESTRY
NATIONAL WEATHER SERVICE SEATTLE WA
742 AM PDT THU AUG 12 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON AUGUST 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...A STRONG UPPER LEVEL HIGH CENTER OVER THE EASTERN
PACIFIC WILL EXPAND INTO THE REGION TODAY. THIS WILL ALLOW EASY
BREAKOUT OF THE MORNING CLOUDS WITH A SUNNY AFTERNOON IN STORE.
WITH THE UPPER HIGH JUST BUILDING IN TODAY...THERE WILL BE A
SUBSIDENCE INVERSION AT THE TOP OF THE 4500-FOOT DEEP MIXED LAYER
WHICH WILL PUT A STRONG LID ON THE LIFT OF SMOKE AT THAT LEVEL.

 FORECAST FOR 20 FOOT WIND SPEED (VALLEYS AND RIDGE TOPS) ARE 10
 MINUTE AVERAGES REFLECTING RAWS WINDS.

.TODAY...

SKY/WEATHER.........CLOUDY PRIOR TO IGNITION TIME...BECOMING SUNNY
                    AROUND IGNITION TIME.
MAX TEMPERATURE.....AROUND 79.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........LIGHT OR NEARLY CALM WIND AT IGNITION TIME...
                    BECOMING NORTHWEST 3 TO 5 MPH AROUND MID
                    AFTERNOON.
MIXING HEIGHT.......INCREASING TO 4500 FT AGL THIS AFTERNOON. VERY
                    STABLE ABOVE THE MIXED LAYER.
TRANSPORT WINDS.....LIGHT WIND...BECOMING NORTHWEST 3 TO 5 MPH LATE
                    THIS AFTERNOON.
HAINES INDEX........MID-LEVEL....3 OR VERY LOW.
                    HIGH-LEVEL...4 OR LOW.

.TONIGHT...

MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........93 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 3 TO 5 MPH EARLY THIS
                    EVENING...BECOMING NEARLY CALM BY LATE EVENING.
                    NORTH-NORTHEAST WIND NEAR 5 MPH DEVELOPING
                    OVERNIGHT.
MIXING HEIGHT.......5300 FT AGL DECREASING TO 800 FT AGL LATE THIS
                    EVENING.
TRANSPORT WINDS.....NORTH AROUND 6 MPH THIS EVENING...BECOMING
                    NORTHEAST AFTER MIDNIGHT.

$$
FORECASTER...HANER
REQUESTED BY...DAN LEEPER
TYPE OF REQUEST...PRESCRIBED
.TAG 20100812.TA8__.01/SEW