FNUS75 KMSO 191535
FWSMSO

SPOT FORECAST FOR PETTY ROCK 13
NATIONAL WEATHER SERVICE MISSOULA MT
935 AM MDT MON APR 19 2010

FORECAST IS BASED ON IGNITION TIME OF 0910 MDT ON APRIL 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE WILL PRODUCE CLEAR AND DRY CONDITIONS
TODAY. EXPECT AN INCREASE IN RIDGE WINDS FROM 1400-1700 AS THE ATMOSPHERE
MIXES OUT. OTHERWISE TERRAIN DRIVEN WINDS WILL OCCUR ON THE NORTH ASPECT.

TUESDAY...AFTERNOON CUMULUS CLOUDS AND SOUTHEAST WINDS WILL INCREASE
AS LOW PRESSURE APPROACHES THE REGION. INCREASING INSTABILITY MAY
PRODUCE A FEW THUNDERSTORMS...WITH LIGHT PRECIPITATION...AFTER 1500.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....74-79.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........SLOPE/VALLEY...UPSLOPE 2-4 MPH AFTER 1400.
                    RIDGE WINDS....SOUTHEAST 4-8 MPH.
MIXING HEIGHT.......7800 FT AGL.
MIXING WINDS........SOUTH 10 MPH.

.TONIGHT...

MIN TEMPERATURE.....33-38.
MAX HUMIDITY........74-79 PERCENT.
WIND (20 FT)........SLOPE/VALLEY....DOWNSLOPE 1-3 MPH
                    RIDGE...........BECOMING LIGHT/VARIABLE AFTER 1800.

.TUESDAY...

SKY/WEATHER.........INCREASING AFTERNOON CUMULUS CLOUDS. CHANCE OF RAIN
                    SHOWERS AND THUNDERSTORMS AFTER 1600.
CWR.................10 PERCENT.
MAX TEMPERATURE.....75-80.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........SLOPE/VALLEY.....2-4 MPH AFTER 1200.
                    RIDGE WINDS......6-12 MPH AFTER 1200.
MIXING HEIGHT.......8100 FT AGL.
MIXING WINDS........SOUTHEAST 20 MPH.

$$
FORECASTER...RPN
REQUESTED BY...JEFF HAYES
TYPE OF REQUEST...PRESCRIBED
.TAG 20100419.PETTY.01/MSO