FNUS75 KBYZ 191345
FWSBYZ

SPOT FORECAST FOR FATMAN  CCC  HFR...BIA, CROW AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
745 AM MDT TUE OCT 19 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON OCTOBER 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
UPPER LEVEL HIGH PRESSURE WILL BUILD OVER WESTERN MONTANA THE NEXT
FEW DAYS BRINGING A WARMING AND DRYING TREND. THIS WILL KEEP SUNNY
SKIES IN PLACE. THE SURFACE PRESSURE PATTERN IS WEAK SO WIND
SPEEDS ARE EXPECTED TO STAY BELOW 10 MPH THROUGH WEDNESDAY. WINDS
MAY START WITH MORE OF A SLOPE ORIENTATION UNTIL NOON AND THEN
TREND WESTERLY AS DAYTIME HEATING OCCURS. TEMPERATURES WILL BE
WARMING A FEW DEGREES EACH DAY WITH HUMIDITY MINIMUMS IN THE MID
20S. BORSUM

.TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....61-64.
MIN HUMIDITY........24-29 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST TRENDING WEST 5 TO 10 MPH.
 RIDGETOP...........WEST 10 TO 15 MPH.
MIXING HEIGHT.......4600 FT AGL.
MIXING WINDS........NORTHWEST 10 TO 20 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....38-42.
MAX HUMIDITY........50-55 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNSLOPE 3 TO 5 MPH.
 RIDGETOP...........NORTHWEST 10 TO 20 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........NORTHWEST 5 TO 15 MPH.

.WEDNESDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....64-69.
MIN HUMIDITY........23-27 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH WINDS 5 TO 10 MPH IN THE MORNING SHIFTING
                    TO THE NORTHWEST IN THE AFTERNOON.
 RIDGETOP...........WEST 10 TO 20 MPH.
MIXING HEIGHT.......4000 FT AGL.
MIXING WINDS........WEST 10 TO 20 MPH.

$$
FORECASTER...BORSUM
REQUESTED BY...BRYCE ROGERS
TYPE OF REQUEST...PRESCRIBED
.TAG 20101019.FATMA.01/BYZ