FNUS75 KMSO 242246
FWSMSO

SPOT FORECAST FOR WEST RIVERSIDE FIRE
NATIONAL WEATHER SERVICE MISSOULA MT
446 PM MDT WED AUG 24 2011

FORECAST IS BASED ON REQUEST TIME OF 1600 MDT ON AUGUST 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...FIRE WEATHER WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
THURSDAY EVENING...

.DISCUSSION...SUFACE INVERSION STILL EXPECTED TO BREAK AND MIX MID
LEVEL WINDS TO THE FIRE BY EARLY EVENING. THIS WILL ALLOW THE BASE
OF THE FIRE HUMIDITIES TO LOWER...BUT GIVEN THE PROXIMITY OF THE
RIVER...MAY ONLY LOWER INTO THE LOWER TEENS. POTENTIAL FOR
NOCTURNAL THUNDERSTORMS STILL EXISTS FROM 0300-0800 MDT. DRY LOW
LEVELS MEAN LIGHTNING AND WINDS WILL BE THE MAIN IMPACT. TIMING
FOR REDEVELOPMENT OF THUNDERSTORMS ON THURSDAY IS SOONER THAN
PREVIOUSLY FORECAST...CLOSER TO 1500 MDT THURSDAY. THESE STORMS
ARE ALSO EXPECTED TO START DRY...BUT WILL MOISTEN AS THE
AFTERNOON/EARLY EVENING PROGRESSES. ERRATIC WIND DIRECTION WITH
GUSTS TO 35 MPH ARE POSSIBLE OVERNIGHT AND AGAIN THURSDAY WITH
STORMS.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....90-95 BASE...78-83 TOP.
MIN HUMIDITY........11-16 PERCENT BASE...18-23 PERCENT TOP.
WIND (20 FT)........WEST 9-12 MPH IN THE LATE AFTERNOON. GUSTS
                    TO 20 MPH AT THE TOP OF THE FIRE.
MIXING HEIGHT.......8900 FT AGL.
MIXING WINDS........WEST 20 MPH.
HAINES INDEX........3 VERY LOW.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
                    SLIGHT CHANCE OF THUNDERSTORMS AFTER 0300 MDT.
CWR.................LESS THAN 10 PERCENT.
MIN TEMPERATURE.....50-55 BASE...57-62 TOP.
MAX HUMIDITY........61-66 PERCENT BASE...42-47 PERCENT TOP.
WIND (20 FT)........WEST WINDS 9-12 MPH IN THE EARLY EVENING BECOMING
                    DOWNSLOPE 2-4 MPH. ERRATIC WINDS WITH GUSTS TO 35 MPH
                    NEAR STORMS AFTER MIDNIGHT.
MIXING HEIGHT.......200 FT AGL.
MIXING WINDS........LIGHT AND VARIABLE.
HAINES INDEX........3 VERY LOW.

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS
                    IN THE MORNING...THEN CHANCE OF THUNDERSTORMS
                    AND SLIGHT CHANCE OF RAIN SHOWERS IN THE
                    AFTERNOON...MAINLY AFTER 1400.
CWR.................20 PERCENT.
MAX TEMPERATURE.....88-93 BASE...74-79 TOP.
MIN HUMIDITY........12-17 PERCENT BASE...25-30 PERCENT TOP.
WIND (20 FT)........UPSLOPE 2-4 MPH BECOMING SOUTHWEST 9-12 MPH IN
                    THE AFTERNOON. ERRATIC GUSTY WINDS TO 35 MPH NEAR
                    STORMS.
MIXING HEIGHT.......9300 FT AGL.
MIXING WINDS........WEST 15 MPH.
HAINES INDEX........3 VERY LOW.

$$
FORECASTER...MEAD
REQUESTED BY...MATT BUTLER
TYPE OF REQUEST...WILDFIRE
.TAG 20110824.WESTR.01/MSO