FNUS75 KMSO 181937
FWSMSO

SPOT FORECAST FOR GROUSE LAKES
NATIONAL WEATHER SERVICE MISSOULA MT
137 PM MDT SAT AUG 18 2012

FORECAST IS BASED ON REQUEST TIME OF 1322 MDT ON AUGUST 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

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

.DISCUSSION...THE HOT, DRY RIDGE OF HIGH PRESSURE WILL REMAIN OVER
WESTERN MONTANA TODAY THROUGH SUNDAY. THERMAL BELTS WILL ONCE
AGAIN OCCUR ON THE MID TO UPPER SLOPES OVERNIGHT TONIGHT. THE
POTENTIAL FOR LATE-DAY, HIGH BASED THUNDERSTORMS REMAINS IN THE
FORECAST FOR SUNDAY, AS SOME MONSOONAL MOISTURE WILL BE DRAWN UP
INTO THE AREA FROM THE SOUTH. THUNDERSTORMS ARE ANTICIPATED TO BE
MAINLY DRY, AND PRODUCE ERRATIC AND GUSTY WINDS. COVERAGE MAY NOT
BE TOO WIDESPREAD, BUT A FEW CELLS COULD IMPACT THE FIRE THROUGH
SUNDAY EVENING.

.REST OF TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....75-80.
MIN HUMIDITY........7-13 PERCENT.
WIND (20 FT)........EAST-SOUTHEAST 5-8 MPH...SOME PERIODIC
                    GUSTS 12 TO 15 MPH.
HAINES INDEX........4 LOW.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
MIN TEMPERATURE.....49-55.
MAX HUMIDITY........38-43 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 6-8 MPH IN THE EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY 2-5 MPH.
HAINES INDEX........5 MODERATE.

.SUNDAY...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................20 PERCENT.
MAX TEMPERATURE.....70-75.
MIN HUMIDITY........16-22 PERCENT.
WIND (20 FT)........VARIABLE 2-5 MPH BECOMING NORTH-NORTHWEST
                    AROUND 5-9 MPH IN THE AFTERNOON. ERRATIC WINDS
                    DIRECTLY UNDER THUNDERSTORMS.
HAINES INDEX........4 LOW.

$$
FORECASTER...ALLEGRETTO
REQUESTED BY...IC PARKER
TYPE OF REQUEST...WILDFIRE
.TAG 20120818.GROUS.01/MSO