FNUS76 KSEW 272317
FWSSEW

SPOT FORECAST FOR VANCE CREEK...WASHINGTON DNR
NATIONAL WEATHER SERVICE SEATTLE WA
417 PM PDT THU AUG 27 2009

FORECAST IS BASED ON REQUEST TIME OF 1516 PDT ON AUGUST 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...MARINE AIR WILL SPREAD INLAND THROUGH THE CHEHALIS
GAP ON FRIDAY AND DEEPEN OVER THE FIRE. GIVE THE ORIENTATION OF
THE VANCE CREEK DRAINAGE...AM THINKING MARINE AIR THAT COMES IN
FROM THE SOUTHWEST AROUND SOUTH MOUNTAIN WILL CURL OR EDDY IN FROM
THE SOUTH OVER THE FIRE. MID-LEVEL CLOUDS WILL INCREASE IN THE
AFTERNOON AS A LARGER FRONTAL SYSTEM APPROACHES. SCATTERED SHOWERS
WILL SPREAD INTO THE FIRE AREA EARLY FRIDAY EVENING...BUT IT
REMAINS TO BE SEEN IF INDIVIDUAL SHOWERS WILL HIT OR MISS THE
FIRE. OVERALL TREND WILL BE TOWARD COOLER AND MORE HUMID
CONDITIONS ON FRIDAY AND FRIDAY NIGHT.

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

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0%.
MIN TEMPERATURE.....AROUND 49.
MAX HUMIDITY........95 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 7 TO 12 MPH.
MIXING HEIGHT.......5900 FT AGL DECREASING TO 0 FT AGL LATE IN THE
                    EVENING.
TRANSPORT WINDS.....WEST AROUND 6 MPH.
HAINES INDEX........MID-LEVEL....5 OR MODERATE.
                    HIGH-LEVEL...4 OR LOW.
LAL.................1.

.FRIDAY...

SKY/WEATHER.........PARTLY SUNNY IN THE MORNING WITH PATCHY FOG.
                    TURNING CLOUDY IN THE AFTERNOON WITH SHOWERS
                    APPROACHING NEAR END OF DAY SHIFT.
CWR.................10%.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........50 PERCENT.
WIND (20 FT)........LIGHT WIND IN THE MORNING...BECOMING SOUTH
                    6 TO 9 MPH IN THE AFTERNOON.
MIXING HEIGHT.......0 FT AGL INCREASING TO 4500 FT AGL LATE IN THE
                    MORNING.
TRANSPORT WINDS.....WEST AROUND 7 MPH.
HAINES INDEX........MID-LEVEL....5 OR MODERATE.
                    HIGH-LEVEL...3 OR VERY LOW.
LAL.................1.

.FRIDAY NIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED SHOWERS. PATCHY FOG
                    OVERNIGHT.
CWR.................20%.
MIN TEMPERATURE.....53-55.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 3 TO 6 MPH IN THE EVENING...
                    BECOMING LIGHT OVERNIGHT.
MIXING HEIGHT.......DECREASING TO 1800 FT AGL IN THE EVENING.
TRANSPORT WINDS.....WEST AROUND 6 MPH.
HAINES INDEX........MID-LEVEL....4 OR LOW.
                    HIGH-LEVEL...2 OR VERY LOW.
LAL.................1.

$$
FORECASTER...HANER
REQUESTED BY...NICOLE ANDERSON
TYPE OF REQUEST...WILDFIRE
.TAG 20090827.VANCE.01/SEW