FNUS76 KSEW 121438
FWSSEW

SPOT FORECAST FOR UPPER WEIR SW RESEARCH PLOTS...FORT LEWIS-MCCHORD
NATIONAL WEATHER SERVICE SEATTLE WA
738 AM PDT WED SEP 12 2012

FORECAST IS BASED ON IGNITION TIME OF 1230 PDT ON SEPTEMBER 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...A THERMAL TROUGH OF LOW PRESSURE OVER WESTERN OREGON
WILL EXTEND NORTH INTO WESTERN WASHINGTON THROUGH THURSDAY THEN
SHIFT OVER THE CASCADES LATE THURSDAY AND INTO EASTERN WASHINGTON
FRIDAY. THIS PATTERN WILL PRODUCE UNSEASONABLY WARM AND DRY
CONDITIONS BEFORE HUMIDITIES BEGIN TO RECOVER FRIDAY WITH LIGHT
ONSHORE FLOW. HAINES INDEXES WILL REMAIN RATHER HIGH INTO FRIDAY.

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

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........26 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 3 TO 7 MPH.
MIXING HEIGHT.......1400-2400 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 13 MPH.

.TONIGHT...

MAX HUMIDITY........79 PERCENT.
MIXING HEIGHT.......400-1400 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 11 MPH.

$$
FORECASTER...BUEHNER
REQUESTED BY...DAN LEEPER
TYPE OF REQUEST...PRESCRIBED
.TAG 20120912.UPPER.01/SEW

DAN...SUGGEST BEING MORE CAUTIOUS THAN NORMAL TODAY GIVEN OUR DRY
CONDITIONS AND THE RATHER HIGH HAINES INDEXES.