FNUS76 KOTX 301346
FWSOTX

SPOT FORECAST FOR DEVILS GULCH...CWICC...UPDATED FOR THUNDERSTORM
THREAT TODAY.
NATIONAL WEATHER SERVICE SPOKANE WA
645 AM PDT FRI JUL 30 2010

FORECAST IS BASED ON REQUEST TIME OF 2247 PDT ON JULY 29.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

MOIST AND UNSTABLE SOUTHWEST FLOW WILL CONTINUE OVER THE REGION
TODAY. A SURFACE THERMAL TROUGH WILL REMAIN OVER THE COLUMBIA BASIN.
A BRIEF SHOWER OR THUNDERSTORM ON THE FIRE IS LIKLEY EARLY THIS
MORNING. RAIN WILL BE BRIEF AND LIGHT...LIKELY ONLY A SPRINKLE OR
FEW HUNDREDTHS OF AN INCH. MORE THUNDERSTORMS ARE POSSIBLE THIS
AFTERNOON ON THE RIDGE NEAR THE FIRE. THIS EVENING THE CROSS CASCADE
GRADIENT WILL INCREASE...RETARDING NORMAL DOWNSLOPE DRAINAGE AND
POSSIBLY MAINTAINING A LIGHT UPSLOPE WIND ON THE WEST FACING SLOPE.
THE THREAT OF THUNDERSTORMS WILL INCREASE TONIGHT AS A PACIFIC
TROUGH APPROACHES...BUT A BETTER CHANCE OF THUNDERSTORMS ON OR NEAR
THE FIRE WILL BE ON SATURDAY WHEN THE UPPER TROUGH ARRIVES IN THE
REGION. WESTERLY/UPSLOPE WINDS WILL LIKELY BE ENHANCED ON SATURDAY
AS A WEAK COLD FRONT PASSES THROUGH THE FIRE AREA.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY...ISOLATED THUNDERSTORMS.
CWR.................10 PERCENT.
MAX TEMPERATURE.....84.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........UPSLOPE 4 TO 7 MPH. GUSTS TO 15 MPH IN THE AFTERNOON.
MIXING HEIGHT.......NEAR SURFACE IN THE MORNING...BECOMING 8000 FT
                    AGL AFTER 11 AM.
TRANSPORT WINDS.....WEST 8 TO 10 MPH.
LAL.................1.
HAINES INDEX........4 LOW.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS OVERNIGHT.
CWR.................10 PERCENT.
MIN TEMPERATURE.....58.
MAX HUMIDITY........55 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 4 TO 7 MPH. EVENING WEST GUSTS
                    TO 20 MPH GUSTY AND ERRATIC
                    WINDS POSSIBLE NEAR THUNDERSTORMS OVERNIGHT.
MIXING HEIGHT.......8000 FT AGL IN THE EVENING DECREASING TO 1000
                    FT AGL OVERNIGHT.
TRANSPORT WINDS.....WEST 8 TO 12 MPH.
LAL.................2.
HAINES INDEX........4 LOW.

.SATURDAY...

SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE MORNING...THEN CHANCE OF
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
CWR.................25 PERCENT.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 14 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.
MIXING HEIGHT.......1000 FT AGL IN THE MORNING INCREASING TO 6000
                    FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 8 TO 12 MPH.
LAL.................3.
HAINES INDEX........4 LOW.

$$
FORECASTER...MF
REQUESTED BY...JIM DUCK
TYPE OF REQUEST...WILDFIRE
.TAG 20100729.DEVIL.03/OTX