FNUS76 KSEW 042237
FWSSEW

SPOT FORECAST FOR LANGILLE...USFS GIFFORD PINCHOT
NATIONAL WEATHER SERVICE SEATTLE WA
337 PM PDT TUE AUG 4 2009

FORECAST IS BASED ON REQUEST TIME OF 1545 MDT ON AUGUST 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...HIGH PRESSURE ALOFT OVER THE PACIFIC NORTHWEST WILL
CONTINUE TO WEAKEN OVERNIGHT. WITH INCREASING ONSHORE FLOW TONIGHT
I WOULD EXPECT A DEEPER MARINE LAYER WEDNESDAY WITH A LATER BURN OFF
AND BY THURSDAY EVEN LESS AFTERNOON SUNSHINE...COOLER TEMPS AND HIGHER
HUMIDITIES. WITH THIS AFTERNOONS AIRMASS APPEARING FAIRLY STABLE AND
AND EVEN MORE STABLE TOMORROW...I HAVE REMOVED THE CHANCES OF
THUNDERSTORMS FOR TONIGHT AND WEDNESDAY FROM THE CASCADES. AN UPPER
LEVEL TROUGH IS EXPECT TO CROSS WESTERN WASHINGTON LATE WEDNESDAY
INTO LATE THURSDAY FOR STRONGER WESTERLY FLOW AND POSSIBLE GUSTY
WINDS IN ALIGNED WEST TO EAST VALLEYS AND ALONG EXPOSED MOUNTAIN
RIDGES.

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

.WEDNESDAY...
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS IN THE
                    AFTERNOON.
CWR.................5 PERCENT.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT AND VARIABLE WINDS 2 TO 4 MPH BECOMING WEST
                    5 TO 8 MPH IN THE AFTERNOON WITH GUSTS 10 TO 14 MPH
                    AT TIMES IN ALIGNED WEST TO EAST VALLEYS.
 RIDGES.............WEST TO SOUTHWEST 5 TO 8 MPH INCREASING TO 7 TO 10
                    MPH WITH GUSTS 12 TO 15 MPH EXPOSED RIDGES IN THE
                    AFTERNOON.
MIXING HEIGHT.......2300-3200 FT AGL.
TRANSPORT WINDS.....WEST 5 TO 8 MPH.
HIGH HAINES INDEX...4 OR LOW.
LAL.................1.
RAINFALL AMOUNT.....0.00 INCHES.

.WEDNESDAY NIGHT...
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS.
CWR.................LESS THAN 10%.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........89 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 7 TO 10 MPH WITH GUST 12 TO 18 MPH AT
                    TIMES IN ALIGNED WEST TO EAST VALLEYS.
 RIDGES.............WEST WINDS 8 TO 12 MPH WITH GUSTS 14 TO 18 MPH
                    EXPOSED RIDGES.
MIXING HEIGHT.......1800-2800 FT AGL.
TRANSPORT WINDS.....NORTHWEST 7 TO 10 MPH.
HIGH HAINES INDEX...3 OR VERY LOW.
LAL.................1.
RAINFALL AMOUNT.....0.00 INCHES.

.THURSDAY...
SKY/WEATHER.........MOSTLY CLOUDY EARLY BECOMING PARTLY SUNNY BY
                    LATE AFTERNOON. CHANCE OF SHOWERS.
CWR.................LESS THAN 10%.
MAX TEMPERATURE.....AROUND 69.
MIN HUMIDITY........49 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 7 TO 10 MPH WITH GUSTS 12 TO 18 MPH
                    AT TIMES IN ALIGNED WEST TO EAST VALLEYS.
 RIDGES.............WEST TO NORTHWEST WINDS 8 TO 12 MPH WITH GUSTS
                    16 TO 20 MPH AT TIMES EXPOSED RIDGES.
MIXING HEIGHT.......1700 FT AGL INCREASING TO 5600 FT AGL LATE IN
                    THE MORNING.
TRANSPORT WINDS.....NORTHWEST 8 TO 12 MPH.
HIGH HAINES INDEX...3 OR VERY LOW.
LAL.................1.
RAINFALL AMOUNT.....0.00 INCHES.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS IN THE UPPER 40S. HIGHS IN THE
MID 60S. FREEZING LEVEL 11700 FEET. WEST WINDS 5 TO 8 MPH.
.SATURDAY...
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS IN THE MID 40S. HIGHS IN THE
LOWER 60S. FREEZING LEVEL 11600 FEET. WEST WINDS 4 TO 6 MPH.
.SUNDAY...
PARTLY CLOUDY. CHANCE OF SHOWERS. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 60S. FREEZING LEVEL 10800 FEET. WEST WINDS 5 TO 8 MPH.

$$
FORECASTER...PRANGE
REQUESTED BY...RISA LANGE-NAVARRO
TYPE OF REQUEST...WILDFIRE
.TAG 20090804.LANGI.01/SEW