FNUS76 KSEW 031452
FWSSEW

SPOT FORECAST FOR MOUNT SITE...FT LEWIS FORESTRY
NATIONAL WEATHER SERVICE SEATTLE WA
752 AM PDT TUE AUG 3 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON AUGUST 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...A WEAK UPPER TROUGH WILL DROP SOUTH OUT OF BRITISH
COLUMBIA TODAY...FORMING AN UPPER LOW OVER WESTERN WASHINGTON
LATE TODAY INTO WEDNESDAY. THIS FEATURE WITH ITS INSTABILITY WILL
HELP TO BREAK UP THE MARINE LAYER A LITTLE EARLIER TODAY WHEN
COMPARED TO YESTERDAY AND ALLOW FOR SLIGHTLY WARMER AND DRIER
CONDITIONS LATER THIS AFTERNOON. WINDS ALOFT ARE RATHER LIGHT AND
FAIRLY VARIABLE IN NATURE.

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

.TODAY...

SKY/WEATHER.........CLOUDY THIS MORNING THEN BECOMING MOSTLY SUNNY.
                    LIKELY BREAK UP AROUND 11 AM.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........48 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 3 TO 5 MPH BECOMING WEST THIS
                    AFTERNOON.
MIXING HEIGHT.......1200 FT AGL INCREASING TO 5700 FT THROUGH THE DAY.
TRANSPORT WINDS.....LIGHT SOUTH-SOUTHWEST THIS MORNING BECOMING LIGHT
                    NORTHWEST THIS AFTERNOON.
HAINES INDEX........3 OR VERY LOW.

.TONIGHT...

MIN TEMPERATURE.....AROUND 54.
MAX HUMIDITY........90 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 3 TO 5 MPH.
MIXING HEIGHT.......5700 FT AGL DECREASING TO 1400 FT AGL LATE IN
                    THE EVENING.
TRANSPORT WINDS.....NORTH AROUND 9 MPH.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
MOSTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE LOWER 70S. WEST
WINDS 4 TO 6 MPH.
.FRIDAY...
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS AROUND 70. WEST WINDS
3 TO 5 MPH.
.SATURDAY...
MOSTLY CLOUDY. LOWS AROUND 50. HIGHS IN THE UPPER 60S. SOUTHWEST
WINDS 3 TO 5 MPH.

$$
FORECASTER...CERNIGLIA
REQUESTED BY...DAN LEEPER
TYPE OF REQUEST...PRESCRIBED
.TAG 20100803.MOUNT.01/SEW