FNUS76 KSEW 161853
FWSSEW

SPOT FORECAST FOR WHITEHORSE...WASHINGTON DNR
NATIONAL WEATHER SERVICE SEATTLE WA
1153 AM PDT FRI JUL 16 2010

FORECAST IS BASED ON REQUEST TIME OF 1130 PDT ON JULY 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...A WEAK UPPER TROUGH IS BRUSHING BY WESTERN WASHINGTON
TODAY. THIS WILL MAINTAIN SEASONABLE ONSHORE FLOW TODAY AND
WESTERLY UPVALLEY WINDS ACROSS THE FIRE AREA. AROUND SUNSET...
UPVALLEY WINDS WILL QUICKLY DIE OFF. COOLER AND MORE STABLE AIR
ALONG WITH LIGHT WINDS WILL START TO FILL THE VALLEY FOR THE
NIGHT. THE ELEVATION OF THE FIRE WILL REFLECT THE COOLER VALLEY
BOTTOM ENVIRONMENT BY MIDNIGHT...RESTING BELOW THE THERMAL BELTS
HIGHER UP.

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

.TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0%.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........WESTERLY UPVALLEY 5 TO 8 MPH WITH GUSTS TO
                    12 MPH.
MIXING HEIGHT.......INCREASING TO 5000 FT AGL THIS AFTERNOON.
TRANSPORT WINDS.....WEST 6 TO 9 MPH.
HAINES INDEX........MID-LEVEL....4 OR LOW.
                    HIGH-LEVEL...3 OR VERY LOW.
LAL.................1.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0%.
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........85 PERCENT.
WIND (20 FT)........WEST WINDS 3 TO 6 MPH EARLY THIS EVENING...
                    BECOMING SOUTHWEST 1 TO 3 MPH BY 2200 PDT.
MIXING HEIGHT.......DECREASING TO 500 FT AGL LATE THIS EVENING.
TRANSPORT WINDS.....LIGHT WIND.
HAINES INDEX........MID-LEVEL....4 OR LOW.
                    HIGH-LEVEL...4 OR LOW.
LAL.................1.

$$
FORECASTER...HANER
REQUESTED BY...BECKY DOLAN
TYPE OF REQUEST...WILDFIRE
.TAG 20100716.WHITE.01/SEW