FNUS76 KOTX 111754
FWSOTX

SPOT FORECAST FOR WENATCHEE RIVER COMPLEX...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
1054 AM PDT TUE SEP 11 2012

FORECAST IS BASED ON IGNITION TIME OF 0100 PDT ON SEPTEMBER 10.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

TODAY WILL BE THE COOLEST DAY OF THE NEXT SEVEN
DAYS FOR THE FIRE. . GRADUAL WARMING AND DRYING WILL PEAK
WITH FRIDAY BEING THE WARMEST AND DRIEST DAY ON THE FIRE.
THE ATMOSPHERE OVER THE FIRE LATE THURSDAY WILL BE VERY
UNSTABLE AND RESULT IN ENHANCED SIGNIFICANT FIRE BEHAVIOR
FOR LARGE FIRES...ESPECIALLY SOUTH AND WEST ASPECTS.
COLD FRONTS MAY PASS AND BRING GUSTY WIND OVER THE
WEEKEND. ADDITIONALLY TONIGHT WILL BE QUITE COOL SO
ACCESS TO WARM PERSONAL PROTECTIVE EQUIPMENT MIGHT BE
SOMETHING TO THINK ABOUT.

.TODAY...

SKY/WEATHER.........SUNNY. AREAS OF SMOKE.
CWR.................0 PERCENT.
MAX TEMPERATURE.....70 AT 1200 FEET MSL (WENATCHEE AIRPORT ELEVATION)
               .....62 AT 3000 FEET MSL
               .....58 AT 4000 FEET MSL.
MIN HUMIDITY........16-26 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 2 TO 6 MPH.
MIXING HEIGHT.......6500 FT.
TRANSPORT WINDS.....NORTHWEST 1 TO 2 MPH.
LAL.................1.
HAINES INDEX........4 LOW.

.TONIGHT...

SKY/WEATHER.........CLEAR. AREAS OF SMOKE.
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 37-43.
MAX HUMIDITY........50 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY OR
                    NORTHWEST WINDS 5 TO 7 MPH.
MIXING HEIGHT.......1000 FT AGL OR LESS.
TRANSPORT WINDS.....NORTHWEST 3 TO 7 MPH.
LAL.................1.
HAINES INDEX........3 VERY LOW.

.WEDNESDAY...

SKY/WEATHER.........SUNNY. AREAS OF SMOKE.
CWR.................0 PERCENT.
MAX TEMPERATURE.....75 AT 1200 FEET MSL (WENATCHEE AIRPORT ELEVATION)
               .....67 AT 3000 FEET MSL
               .....63 AT 4000 FEET MSL
MIN HUMIDITY........14-24 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY OR NORTHEAST WINDS 5 TO 9 MPH.
MIXING HEIGHT.......1000 FT AGL IN THE MORNING INCREASING TO 5500
                    FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHEAST 3 TO 7 MPH.
LAL.................1.
HAINES INDEX........3 VERY LOW.

. OUTLOOK FOR THE WEEKEND...CONTINUED WARMING WITH THURSDAY BEING
HOT AND UNSTABLE AND FRIDAY THE WARMEST/HOTTEST DAY OF THE SEVEN
DAY FORECAST WITH HIGH OF 88 AT WENATCHEE AIRPORT. WIND UP INTO
FRIDAY WILL BE MOSTLY DIURNAL UPSLOPE/UPVALLEY DURING DAY FOLLOWED
BY DOWNSLOPE/DOWNVALLEY OVERNIGHT WITH SOME EAST WIND AT 5-9 MPH
MOST PRONOUNCED ON THURSDAY. DRY COLD FRONT PASSAGES SATURDAY
AND/OR SUNDAY WILL BRING GUSTY WIND AND COOLING.

$$
FORECASTER...RP
REQUESTED BY...JOHN ROBERTSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20120910.WENAT.01/OTX