FNUS75 KBYZ 310235
FWSBYZ

SPOT FORECAST FOR COAL...MILES CITY DISPATCH
NATIONAL WEATHER SERVICE BILLINGS MT
835 PM MDT TUE AUG 30 2011

FORECAST IS BASED ON REQUEST TIME OF 2017 MDT ON AUGUST 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

...RED FLAG WARNING IN EFFECT FROM NOON WEDNESDAY TO 6 AM MDT
THURSDAY FOR STRONG GUSTY WINDS...WIND SHIFT AND THUNDERSTORMS
WITH A COLD FRONT FOR THE FIRE AREA...

PREVIOUS MODEL RUNS SUGGESTED POSSIBLE SHOWERS AND THUNDERSTORMS
OVER THE FIRE TONIGHT...BUT LATEST INDICATIONS WERE THAT THE AREA
WILL BE DRY TONIGHT. AN AREA OF LOW PRESSURE WILL MOVE SOUTHEAST
TOWARD THE FIRE TONIGHT AND A LOW LEVEL JET WILL BE OVER THE AREA.
RELATIVE HUMIDITIES WILL RECOVER INTO THE UPPER 50S TO MID 60S AND
LIGHT DOWNSLOPE/DOWN-VALLEY WINDS WILL BECOME SOUTHEAST 5 TO 15 MPH
BY LATE EVENING. A STRONG COLD FRONT WILL APPROACH THE FIRE FROM THE
NORTHWEST WEDNESDAY AFTERNOON. IT WILL BE HOT AND DRY AHEAD OF THE FRONT
WITH TEMPERATURES IN UPPER 80S TO MID 90S AND RELATIVE HUMIDITIES IN THE
MID TEENS TO LOWER 20S. WINDS WILL BE SOUTH 5 TO 15 MPH. EXPECT ISOLATED
SHOWERS AND THUNDERSTORMS OVER THE FIRE WITH STRONG GUSTY WINDS NEAR
THUNDERSTORMS. THE FRONT WILL SWEEP THROUGH THE FIRE EARLY WEDNESDAY
EVENING BRINGING A WIND SHIFT TO THE NORTHWEST AT 10 TO 20 MPH. IT WILL
REMAIN WINDY THROUGH THE NIGHT. ISOLATED SHOWERS AND THUNDERSTORMS WILL
CONTINUE WEDNESDAY NIGHT WITH GUSTY WINDS NEAR THUNDERSTORMS. RELATIVE
HUMIDITIES WILL RECOVER INTO THE 70S.

.REST OF TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....59-64.
MAX HUMIDITY........57-62 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNSLOPE/DOWN-VALLEY WINDS AROUND 5 MPH BECOMING
                    SOUTHEAST 5 TO 15 MPH BY LATE EVENING.
 RIDGETOP...........SOUTHEAST 5 TO 15 MPH.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY WITH ISOLATED SHOWERS AND
                    THUNDERSTORMS.
CWR.................11 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....89-94.
MIN HUMIDITY........16-21 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........SOUTHWEST 10 TO 20 MPH.

.WEDNESDAY NIGHT...

SKY/WEATHER.........MOSTLY CLOUDY WITH ISOLATED SHOWERS AND
                    THUNDERSTORMS.
CWR.................12 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....53-58.
MAX HUMIDITY........73-78 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 10 TO 20 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........NORTHWEST 15 TO 25 MPH.

$$
FORECASTER...ARTHUR
REQUESTED BY...JACALYNN
TYPE OF REQUEST...WILDFIRE
.TAG 20110830.COAL_.01/BYZ