FNUS75 KMSO 221818
FWSMSO

SPOT FORECAST FOR ST  MARY S 30A
NATIONAL WEATHER SERVICE MISSOULA MT
1218 PM MDT FRI MAY 22 2009

FORECAST IS BASED ON IGNITION TIME OF 1300 MDT ON MAY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE WILL STRENGTHEN OVER THE REGION TODAY
RESULTING IN WARMER TEMPERATURES AND DRIER CONDITIONS COMPARED TO
YESTERDAY. A WEAK PRESSURE GRADIENT WILL DEVELOP THIS AFTERNOON
AND PRODUCE AN EAST WIND IN EXPOSED AREAS AND
RIDGE TOPS...OTHERWISE EXPECT TERRAIN-DRIVEN SLOPE WINDS.
SKIES SHOULD REMAIN MOSTLY SUNNY...THOUGH A FEW FAIR WEATHER
CUMULUS BUILDUPS ARE NOT OUT OF THE QUESTION LATER THIS AFTERNOON.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........68-70 AT IGNITION. MAX 73-76.
RH..................22-24 PERCENT AT IGNITION. MIN 18-20 PERCENT.
WIND (20 FT)........UPSLOPE 3-6 MPH.
MIXING HEIGHT.......4500 FT AGL.
MIXING WINDS........SOUTHEAST 5-10 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
TEMPERATURE.........MIN 35-39.
RH..................MAX 65-70 PERCENT.
WIND (20 FT)........DOWNSLOPE 1-3 MPH.
MIXING HEIGHT.......600 FT AGL.
MIXING WINDS........VARIABLE 5 MPH.

.SATURDAY...

SKY/WEATHER.........BECOMING CLOUDY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................10 PERCENT.
TEMPERATURE.........MAX 73-75.
RH..................MIN 23-27 PERCENT.
WIND (20 FT)........SOUTH 10 MPH.

$$
FORECASTER...ALLEGRETTO/MPJ
REQUESTED BY...OLPIN
TYPE OF REQUEST...PRESCRIBED
.TAG 20090522.STMAR.01/MSO