FNUS75 KMSO 292328
FWSMSO

SPOT FORECAST FOR PETTY ROCK 500
NATIONAL WEATHER SERVICE MISSOULA MT
528 PM MDT THU SEP 29 2011

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON SEPTEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...FRIDAY WILL BE ANOTHER WARM AND DRY DAY OVER THE
FIRE. SOME WINDS ARE EXPECTED TO MIX TO THE SURFACE IN THE
AFTERNOON...BUT WITH THE NORTHWEST ASPECT OF THE FIRE...THE
AFFECTS SHOULD BE MINIMAL. HUMIDITIES WILL BE VERY SIMILAR TO
TODAY...BUT ARE NOT EXPECTED TO BOTTOM OUT UNTIL MID TO LATE
AFTERNOON WITH THE MIXING. AT IGNITION...HUMIDITIES WILL LIKELY BE
IN THE MID TO UPPER 30S. MID AND UPPER LEVEL CLOUDS WILL INCREASE
IN THE LATE AFTERNOON AND LOWER AND THICKEN BY SATURDAY MORNING.
SHOWERS ARE EXPECTED TO STAY NORTH OF THE UNIT...BUT INCREASED
CLOUDS WILL LOWER TEMPERATURES AND INCREASE WINDS IN THE
AFTERNOON. SUNDAY IT DOES APPEAR SHOWERS WILL BE CLOSER TO THE
UNIT...BUT GIVEN THE SCATTERED NATURE...WIDESPREAD WETTING RAIN IS
NOT ANTICIPATED.

.FRIDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....74-79.
MIN HUMIDITY........35-40 PERCENT AT IGNITION...25-30 PERCENT
                    MINIMUM HUMIDITY.
WIND (20 FT)........VARIABLE 2-4 MPH BECOMING WEST-SOUTHWEST AROUND 5
                    MPH IN THE AFTERNOON.
MIXING HEIGHT.......5000 FT AGL.
MIXING WINDS........SOUTHWEST 10 MPH.

.FRIDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....53-58.
MAX HUMIDITY........53-58 PERCENT.
WIND (20 FT)........WEST-NORTHWEST WINDS 5-6 MPH IN THE EVENING
                    BECOMING VARIABLE 2-4 MPH.
MIXING HEIGHT.......700 FT AGL.
MIXING WINDS........WEST 5 MPH.

.SATURDAY...

SKY/WEATHER.........MOSTLY CLOUDY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....70-75.
MIN HUMIDITY........29-34 PERCENT.
WIND (20 FT)........VARIABLE 2-5 MPH BECOMING WEST AROUND 6 MPH IN
                    THE AFTERNOON.
MIXING HEIGHT.......3500 FT AGL.
MIXING WINDS........SOUTHWEST 15 MPH.

$$
FORECASTER...MEAD
REQUESTED BY...DEWEY ARNOLD
TYPE OF REQUEST...PRESCRIBED
.TAG 20110930.PETTY.01/MSO