FNUS75 KMSO 230007
FWSMSO

SPOT FORECAST FOR O BRIEN CREEK
NATIONAL WEATHER SERVICE MISSOULA MT
607 PM MDT WED APR 22 2009

FORECAST IS BASED ON REQUEST TIME OF 1724 MDT ON APRIL 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WINDS WILL REMAIN GUSTY THROUGH THE NEXT 2 TO 3 HOURS
BEFORE THE DIURNAL SHIFT TAKES PLACE AND THE ATMOSPHERE STABILIZES.
BUT THE DECREASE IN SPEED WILL BE GRADUAL THROUGH 10 PM. A COLD FRONT
WILL MOVE OVER THE BURN AREA AFTER MIDNIGHT TONIGHT WHICH WILL BRING
A CHANCE FOR PRECIPITATION. HOWEVER RAINFALL ALONG THE FRONTAL
BOUNDARY WILL BE BRIEF AND GENERALLY LESS THAN A WETTING RAIN. THERE
WILL BE A BREAK IN PRECIPITATION DURING THE LATE MORNING AND EARLY
AFTERNOON THURSDAY HOWEVER THE ATMOSPHERE APPEARS UNSTABLE ENOUGH TO
SUPPORT SOME HIT OR MISS CONVECTIVE SHOWERS LATE IN THE AFTERNOON
THROUGH THE EARLY EVENING HOURS.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
                    SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT...
                    THEN CHANCE OF RAIN SHOWERS AFTER 3 AM.
CWR.................20 PERCENT.
MIN TEMPERATURE.....36-41.
MAX HUMIDITY........70-75 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5-14 MPH. GUSTS UP TO 25 MPH IN
                    THE EVENING.
MIXING HEIGHT.......1900 FT AGL.
MIXING WINDS........WEST 15 MPH.
HAINES INDEX........2 VERY LOW.

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS.
CWR.................30 PERCENT.
MAX TEMPERATURE.....46-51.
MIN HUMIDITY........37-42 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6-9 MPH. GUSTS UP TO 20 MPH IN
                    THE AFTERNOON.
MIXING HEIGHT.......5700 FT AGL.
MIXING WINDS........WEST 15 MPH.
HAINES INDEX........2 VERY LOW.

$$

FORECASTER...DICKERSON
REQUESTED BY...KRISTINE   MDC
TYPE OF REQUEST...WILDFIRE
.TAG 20090422.OBRIE.01/MSO