FNUS76 KSEW 141731
FWSSEW

SPOT FORECAST FOR SCOUTS OUT SOUTH...FORT LEWIS-MCCHORD
NATIONAL WEATHER SERVICE SEATTLE WA
1031 AM PDT TUE AUG 14 2012

FORECAST IS BASED ON IGNITION TIME OF 1130 PDT ON AUGUST 14.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...ONSHORE FLOW WILL STRENGTHEN A BIT TODAY AS THE TAIL
END OF AN UPPER TROUGH BRUSHES BY...COOLING TEMPERATURES BACK DOWN
TO NEAR NORMAL.

A THERMAL PRESSURE TROUGH WILL BUILD UP THE COAST ON WEDNESDAY
AND THURSDAY. THIS FEATURE WILL BRING A RAPID WARMING AND DRYING
TREND AROUND MID-WEEK...WITH HOT TEMPERATURES AND POOR NIGHTTIME
HUMIDITY RECOVERIES BY THURSDAY. LIGHT TO MODERATE EAST WIND IS
EXPECTED ON THURSDAY MORNING. BY FRIDAY...THE AIR MASS MAY BECOME
CRITICALLY DRY AND UNSTABLE. NO SIGNIFICANT PRECIPITATION IS
EXPECTED THROUGH FRIDAY. AN UPPER RIDGE BREAKDOWN COULD LEAD TO A
LIGHTNING THREAT SATURDAY AND SATURDAY NIGHT. FOR MOST OF WESTERN
WASHINGTON...THE LAST WETTING RAIN WAS AROUND JULY 20 TO 22...SO
THE LIGHTNING WOULD FOLLOW ABOUT 4 WEEKS WITH NO SIGNIFICANT RAIN.

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

.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........45 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS UP TO 4 MPH.
MIXING HEIGHT.......500 FT AGL INCREASING TO 4200 FT AGL LATE IN
                    THE MORNING.
TRANSPORT WINDS.....LIGHT WINDS.
HAINES INDEX........4 OR LOW.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY.
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........84 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 4 TO 7 MPH.
MIXING HEIGHT.......4200 FT AGL DECREASING TO 1100 FT AGL LATE IN
                    THE EVENING.
TRANSPORT WINDS.....NORTH AROUND 9 MPH.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING SUNNY.
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 4 TO 7 MPH.
MIXING HEIGHT.......1100 FT AGL INCREASING TO 4200 FT AGL LATE IN
                    THE MORNING.
TRANSPORT WINDS.....NORTHEAST AROUND 12 MPH.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S. NORTH WINDS
3 TO 6 MPH.
.FRIDAY...
MOSTLY CLEAR. LOWS AROUND 60. HIGHS IN THE MID 90S. NORTH WINDS 3 TO
5 MPH.
.SATURDAY...
NOT AS WARM. PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS IN THE
LOWER 80S. WEST WINDS 3 TO 4 MPH.

$$
FORECASTER...BOWER
REQUESTED BY...DAN LEEPER
TYPE OF REQUEST...PRESCRIBED
.TAG 20120814.SCOUT.01/SEW