FNUS76 KSEW 050548
FWSSEW

SPOT FORECAST FOR BIG HUMP...USFS
NATIONAL WEATHER SERVICE SEATTLE WA
1048 PM PDT SUN SEP 4 2011

FORECAST IS BASED ON REQUEST TIME OF 2234 PDT ON SEPTEMBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...THE THERMAL PRESSURE TROUGH THAT WAS OVER THE OLYMPIC
MOUNTAINS SUNDAY AFTERNOON HAS PUSHED EAST OF THE CASCADES. ONSHORE
FLOW WILL GIVE A MORE STABLE AND SLIGHTLY MORE HUMID
AIR MASS ON MONDAY...BUT A FLAT UPPER RIDGE WILL SUPPORT ABOVE
NORMAL TEMPERATURES AND BELOW NORMAL HUMIDITY FOR EARLY SEPTEMBER.
LITTLE CHANGE IS EXPECTED ON TUESDAY.

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

.REST OF TONIGHT...

SKY/WEATHER.........CLEAR.
CWR.................0%.
MIN TEMPERATURE.....AROUND 50 VALLEY BOTTOM...53-57 MID SLOPES.
MAX HUMIDITY........80 PERCENT VALLEY BOTTOM...50-57 PERCENT ON
                    MID SLOPES.
WIND (20 FT)........
 VALLEY BOTTOM......LIGHT WIND.
 MIDSLOPES/RIDGES...WEST-SOUTHWEST 4-6 MPH.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....SMOKE DRIFTING DOWNVALLEY TOWARD HOOD CANAL AT 3-5 MPH.
HAINES INDEX........MID LEVEL....5 OR MODERATE.
                    HIGH LEVEL...4 OR LOW.
LAL.................1.
RAINFALL AMOUNT.....0.00 INCHES.

.LABOR DAY...

SKY/WEATHER.........SUNNY.
CWR.................0%.
MAX TEMPERATURE.....AROUND 80 AT 1200 FEET. AROUND 67 AT 3500 FEET.
MIN HUMIDITY........36-44 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......BECOMING UPSLOPE/UPVALLEY 4-8 MPH BY LATE MORNING.
 MIDSLOPES/RIDGES...SOUTH-SOUTHWEST 4-7 MPH.
MIXING HEIGHT.......200 FT AGL INCREASING TO 6700 FT MSL IN THE AFTERNOON.
TRANSPORT WINDS.....LIGHT WIND BECOMING SOUTHWEST 5-10 MPH AFTER THE NIGHTTIME
                    INVERSION BREAKS.
HAINES INDEX........5 OR MODERATE MID LEVEL AND HIGH LEVEL.
LAL.................1.
RAINFALL AMOUNT.....0.00 INCHES.

$$
FORECASTER...ALBRECHT
REQUESTED BY...KATY DRESSLER
TYPE OF REQUEST...WILDFIRE
.TAG 20110904.BIGHU.02/SEW