FNUS75 KMSO 092112
FWSMSO

SPOT FORECAST FOR SAWTOOTH
NATIONAL WEATHER SERVICE MISSOULA MT
312 PM MDT SUN SEP 9 2012

FORECAST IS BASED ON REQUEST TIME OF 1449 MDT ON SEPTEMBER 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
...RED FLAG WARNING IN EFFECT FROM NOON MONDAY TO MIDNIGHT MDT
MONDAY NIGHT...

.DISCUSSION...STRONG WEST WINDS WILL CONTINUE OVERNIGHT TONIGHT ON
THE RIDGE TOPS AND MID-SLOPES. VALLEY INVERSIONS WILL ALSO SET
UP...BUT THE THERMAL BELTS ARE EXPECTED NEAR THE BOTTOM EDGE OF
THE FIRE. OVERNIGHT DISPERSION VALUES IN THE TONIGHT PERIOD ARE
FOR THE VALLEY AND LOWER PORTIONS OF THE FIRE. THE UPPER SLOPES
WILL STAY WELL VENTILATED WITH THE STRONG WINDS. MONDAY NIGHT
LOOKS GOOD FOR RH RECOVERIES WITH A MUCH COOLER/MOISTER AIR MASS
MOVING INTO THE AREA WITH A COLD FRONT MONDAY.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
MIN TEMPERATURE.....39-44.
MAX HUMIDITY........47-52 PERCENT THERMAL BELTS TO 67-72 PERCENT TOP.
WIND (20 FT)........WEST WINDS 5-13 MPH. GUSTS UP TO 25 MPH IN THE
                    EVENING. RIDGE TOP WINDS WILL CONTINUE ALL NIGHT
                    AT 15-20 MPH WITH GUSTS TO 30 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........WEST 5 MPH.
HAINES INDEX........3 VERY LOW.

.MONDAY...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........25-30 PERCENT BOTTOM TO 40-45 PERCENT TOP.
WIND (20 FT)........WEST WINDS 9-19 MPH. GUSTS UP TO 40 MPH IN THE
                    AFTERNOON.
MIXING HEIGHT.......4100 FT AGL.
MIXING WINDS........WEST 25 MPH.
HAINES INDEX........2 VERY LOW.

$$
FORECASTER...LEACH
REQUESTED BY...KELLY ALLEN
TYPE OF REQUEST...WILDFIRE
.TAG 20120909.SAWTO.01/MSO