FNUS76 KOTX 011644
FWSOTX

SPOT FORECAST FOR SABLE FIRE...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
944 AM PDT TUE SEP 1 2009

FORECAST IS BASED ON REQUEST TIME OF 0916 PDT ON SEPTEMBER 01.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A DEEP TROUGH OF LOW PRESSURE CENTERED OFF THE COAST WILL SEND
A COUPLE OF WEAK DISTURBANCES INTO THE REGION FROM THE SOUTH THIS
AFTERNOON AND EVENING. THE APPROACH OF THESE FEATURES COMBINED
WITH HOT SURFACE TEMPERATURES WILL TRIGGER ISOLATED THUNDERSTORMS.
DRIER AIR WILL TEMPORARILY MOVE OVER THE FIRE ON WEDNESDAY
SIGNIFICANTLY LOWERING THE THREAT OF THUNDERSTORMS. THE TROUGH
WILL BEGIN TO SHIFT INLAND BY THURSDAY AND SHOULD BE FIRMLY
ENTRENCHED OVER THE FIRE BY THE WEEKEND. THIS WILL RESULT IN A
SIGNIFICANT COOLING TREND WITH INCREASING CHANCES FOR
PRECIPITATION. BREEZY WEST WINDS THURSDAY.

.TODAY...

SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND
                    ISOLATED THUNDERSTORMS...MAINLY IN THE AFTERNOON.
CWR.................15 PERCENT.
MAX TEMPERATURE.....74.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........EAST OR DOWNSLOPE/DOWNVALLEY 6 TO 9 MPH
                    IN THE MORNING...BECOMING WEST 5 TO 8 MPH BY 2 PM.
MIXING HEIGHT.......INCREASING TO 4500 FT AGL BY NOON.
TRANSPORT WINDS.....SOUTH 6 TO 10 MPH.
LAL.................2.
HAINES INDEX........3 VERY LOW.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
                    SLIGHT CHANCE OF RAIN SHOWERS AND ISOLATED
                    THUNDERSTORMS IN THE EVENING.
CWR.................10 PERCENT.
MIN TEMPERATURE.....48.
MAX HUMIDITY........76 PERCENT.
WIND (20 FT)........WEST WINDS 7 TO 10 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE EVENING.
MIXING HEIGHT.......4500 FT AGL IN THE EVENING DECREASING TO 1700
                    FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTHWEST 3 TO 7 MPH.
LAL.................2.
HAINES INDEX........3 VERY LOW.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........29 PERCENT.
WIND (20 FT)........SOUTH 5 TO 7 MPH BY 11 AM.
MIXING HEIGHT.......1700 FT AGL IN THE MORNING INCREASING TO 4500
                    FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 3 TO 7 MPH.
LAL.................1.
HAINES INDEX........3 VERY LOW.

$$
FORECASTER...PB
REQUESTED BY...CWICC
TYPE OF REQUEST...WILDFIRE
.TAG 20090901.SABLE.01/OTX