FNUS75 KMSO 231603
FWSMSO

SPOT FORECAST FOR PETTY ROCK 3A
NATIONAL WEATHER SERVICE MISSOULA MT
1003 AM MDT MON APR 23 2012

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...ATMOSPHERIC MOISTURE AND INSTABILITY WILL BE
INCREASING THIS AFTERNOON UNDER A SOUTHWEST FLOW ALOFT. CONDITIONS
FAVOR THE DEVELOPMENT OF ISOLATED SHOWERS AND THUNDERSTORMS ACROSS
NORTHWEST MONTANA THIS AFTERNOON...POTENTIALLY IMPACTING THE BURN
SITE. WATCH FOR GUSTY ERRATIC WINDS FROM NEARBY STORMS.

.CONDITIONS AT IGNITION (1200 MDT)...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
TEMPERATURE.........64-66.
HUMIDITY............45-49 PERCENT.
WIND (20 FT)........VARIABLE 1-2 MPH.

.THIS AFTERNOON...

SKY/WEATHER.........INCREASING CLOUDS. SLIGHT CHANCE OF THUNDERSTORMS
                    THIS AFTERNOON.
CWR.................10 PERCENT.
MAX TEMPERATURE.....77-79.
MIN HUMIDITY........23-27 PERCENT.
WIND (20 FT)........VARIABLE 1-3 MPH BECOMING SOUTHWEST 4-8 MPH IN
                    THE AFTERNOON.
MIXING HEIGHT.......8000 FT AGL.
MIXING WINDS........SOUTHWEST 15 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS THIS EVENING.
CWR.................30 PERCENT.
MIN TEMPERATURE.....48-53.
MAX HUMIDITY........78-83 PERCENT.
WIND (20 FT)........WEST WINDS 5-10 MPH IN THE EVENING BECOMING
                    VARIABLE 1-3 MPH.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........LIGHT AND VARIABLE.

.TUESDAY...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS. SLIGHT
                    CHANCE OF THUNDERSTORMS.
CWR.................30 PERCENT.
MAX TEMPERATURE.....71-74.
MIN HUMIDITY........31-36 PERCENT.
WIND (20 FT)........VARIABLE 1-3 MPH BECOMING NORTHWEST AROUND 5
                    MPH IN THE AFTERNOON.
MIXING HEIGHT.......6000 FT AGL.
MIXING WINDS........WEST 15 MPH.

$$
FORECASTER...MSJ
REQUESTED BY...ANDY BIDWELL
TYPE OF REQUEST...PRESCRIBED
.TAG 20120423.PETTY.01/MSO