FNUS75 KMSO 171356
FWSMSO

SPOT FORECAST FOR PETTY ROCK 13
NATIONAL WEATHER SERVICE MISSOULA MT
756 AM MDT THU MAY 17 2012

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON MAY 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...THIS WILL BE A TRANSITION DAY BETWEEN THE HOT AIR
MASS OF RECENT DAYS AND A COOLER TROUGH FRIDAY. SO EXPECT SLIGHTLY
COOLER AND MORE MOIST, ALONG WITH MORE PROMINENT CLOUD COVER.
SOME INCREASE NORTHWEST WIND THIS AFTERNOON BUT MORE FRIDAY.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS IN
                    THE AFTERNOON.
CWR.................10 PERCENT.
MAX TEMPERATURE.....65-70.
MIN HUMIDITY........24-28 PERCENT.
WIND (20 FT)........UPSLOPE...LIGHT THROUGH MIDDAY...INCREASING TO
                    7-12 MPH IN THE AFTERNOON.
MIXING HEIGHT.......6700 FT AGL.
MIXING WINDS........WEST 15 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS IN THE
                    EVENING...THEN SLIGHT CHANCE OF RAIN SHOWERS
                    AFTER MIDNIGHT.
CWR.................20 PERCENT.
MIN TEMPERATURE.....38-43.
MAX HUMIDITY........80-85 PERCENT.
WIND (20 FT)........NORTHWEST 5-8 MPH.
MIXING HEIGHT.......1900 FT AGL.
MIXING WINDS........WEST 5 MPH.

.FRIDAY...

SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS IN
                    THE MORNING...THEN CHANCE OF RAIN SHOWERS AND
                    SLIGHT CHANCE OF THUNDERSTORMS IN THE
                    AFTERNOON.
CWR.................20 PERCENT.
MAX TEMPERATURE.....58-63.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........WEST 5-13 MPH. GUSTS UP TO 25 MPH IN THE
                    AFTERNOON.
MIXING HEIGHT.......8400 FT AGL.
MIXING WINDS........NORTHWEST 15 MPH.

$$
FORECASTER...WHITMORE
REQUESTED BY...DEWEY ARNOLD
TYPE OF REQUEST...PRESCRIBED
.TAG 20120517.PETTY.01/MSO