FNUS75 KBYZ 051821
FWSBYZ

SPOT FORECAST FOR OK_A_BEH PILES...USFS BIGHORN NF
NATIONAL WEATHER SERVICE BILLINGS MT
1121 AM MST MON DEC 5 2011

FORECAST IS BASED ON IGNITION TIME OF 1100 MST ON DECEMBER 06.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

MOSTLY SUNNY AND DRY CONDITIONS EXPECTED TUESDAY. SOUTHWEST WINDS
WILL BE STRONG IN THE MORNING...WEAKENING IN THE AFTERNOON AND
TURNING MORE WESTERLY. RELATIVE HUMIDITIES WILL DROP INTO THE 30
TO 40 PERCENT RANGE IN THE AFTERNOON. MIXING HEIGHTS WILL BE HELD
DOWN BY A LOW LEVEL INVERSION WHICH LIKELY WILL ONLY LIFT A BIT
DURING THE AFTERNOON BUT NOT BREAK. CHAMBERS

.TUESDAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....39-44.
MIN HUMIDITY........32-37 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 15 TO 30 MPH GUSTS AROUND 45
                    MPH IN THE MORNING...BECOMING WEST-SOUTHWEST 10 TO
                    20 MPH IN THE AFTERNOON.
 RIDGETOP...........SOUTHWEST 20 TO 30 MPH IN THE MORNING DECREASING
                    TO 10 TO 20 MPH IN THE AFTERNOON.
MIXING HEIGHT.......2500 FT AGL.
MIXING WINDS........WEST 10 TO 20 MPH.

$$
FORECASTER...CHAMBERS
REQUESTED BY...MARVIN MATTHIESEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20111206.OK_A_.01/BYZ