FNUS75 KMSO 251450
FWSMSO

SPOT FORECAST FOR PETTY ROCK 13
NATIONAL WEATHER SERVICE MISSOULA MT
850 AM MDT SUN SEP 25 2011

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON SEPTEMBER 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WINDS WILL BE INCREASING AT RIDGETOP LEVEL THIS
MORNING IN ADVANCE OF A FRONTAL SYSTEM EXPECTED TO MOVE THROUGH
THE AREA EARLY THIS AFTERNOON. WHILE THE BURN SITE SEEMS
PROTECTED BY SOUTHERLY WINDS THIS MORNING...ONCE THE WINDS STEER
AROUND TO THE WEST WE SHOULD SEE WINDS PICKUP ON SITE. WINDS
ON THE BURN SITE WILL BE PICKING UP ABOUT NOONTIME THEN PEAKING
ABOUT MID TO LATE AFTERNOON. THE HUMIDITIES WILL BE BOTTOMING OUT
BY MID AFTERNOON. CLOUDS AND HUMIDITIES WILL BE INCREASING LATER
THIS AFTERNOON...BUT WE ARE NOT EXPECTING MUCH IN THE WAY OF
WETTING RAINS WITH THIS SYSTEM. THE BEST CHANCE OF ANY RAIN WILL
BE OVERNIGHT TONIGHT.

MUCH COOLER WITH ELEVATED HUMIDITIES...NOT AS WINDY FOR MONDAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY. INCREASING CLOUDS LATER THIS
                    AFTERNOON.
CWR.................0 PERCENT.
TEMPERATURE.........IGNITION...65.         MAX 79-82.
RH..................IGNITION...36 PERCENT. MIN 18-22 PERCENT.
WIND (20 FT)........SOUTH 2-4 MPH AT IGNITION...THEN INCREASING TO 3-6
                    MPH BY 1300 MDT. BECOMING WEST-NORTHWEST 8-14 MPH
                    WITH GUSTS TO 20 MPH THIS AFTERNOON.
MIXING HEIGHT.......3000 FT AGL AT IGNITION...OTHERWISE 6000 FT AGL.
MIXING WINDS........SOUTHWEST 20 MPH.

.TONIGHT...

SKY/WEATHER.........BECOMING MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS.
CWR.................20 PERCENT.
TEMPERATURE.........MIN 44-49.
RH..................MAX 80-90 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5-10 MPH.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........WEST 15 MPH.

.MONDAY...

SKY/WEATHER.........MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS EARLY
                    ...THEN BECOMING PARTLY CLOUDY.
CWR.................LESS THAN 10 PERCENT.
TEMPERATURE.........MAX 67-71.
RH..................MIN 28-33 PERCENT.
WIND (20 FT)........VARIABLE 2-5 MPH BECOMING NORTHWEST 5-10 MPH IN
                    THE AFTERNOON.
MIXING HEIGHT.......4000 FT AGL.
MIXING WINDS........WEST 15 MPH.

$$
FORECASTER...MSJ
REQUESTED BY...JEFF HAYES
TYPE OF REQUEST...PRESCRIBED
.TAG 20110925.PETTY.02/MSO