FNUS76 KSEW 101623
FWSSEW

SPOT FORECAST FOR 13TH DIVISION PRAIRIE...FT LEWIS FORESTRY
NATIONAL WEATHER SERVICE SEATTLE WA
923 AM PDT THU SEP 10 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 PDT ON SEPTEMBER 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...A STRONG UPPER LEVEL HIGH PRESSURE RIDGE HAS BUILT
OFF THE COAST AND WILL SLOWLY BUT STEADILY SHIFT EAST ACROSS
WESTERN WASHINGTON TODAY THROUGH SATURDAY. AS IT DOES...A
WARMING AND DRYING TREND IS EXPECTED.

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

.TODAY...

SKY/WEATHER.........LOW CLOUDS AND PATCHY FOG BURNING OFF AROUND
                    IGNITION TIME. SUNNY THIS AFTERNOON.
CWR.................0%.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........43 PERCENT.
WIND (20 FT)........LIGHT WIND AT IGNITION TIME BECOMING NORTH
                    6 TO 9 MPH THIS AFTERNOON.
MIXING HEIGHT.......RISING TO 2500 FT AGL THIS AFTERNOON.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.
HAINES INDEX........MID-LEVEL....4 OR LOW.
                    HIGH-LEVEL...3 OR VERY LOW.

.TONIGHT...

MIXING HEIGHT.......2500 FT AGL DECREASING TO 0 FT AGL LATE IN THE
                    EVENING.
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH EARLY THIS EVENING...
                    EASING TO 5 MPH OVERNIGHT.

$$
FORECASTER...HANER
REQUESTED BY...DAN LEEPER
TYPE OF REQUEST...PRESCRIBED
.TAG 20090910.13THD.01/SEW