FNUS75 KBYZ 191405
FWSBYZ

SPOT FORECAST FOR BLACK SPRINGS...NORTHERN CHEYENNE
NATIONAL WEATHER SERVICE BILLINGS MT
805 AM MDT TUE MAY 19 2009

FORECAST IS BASED ON IGNITION TIME OF 0900 MDT ON MAY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

ONE MORE VERY WARM TO HOT DAY IN STORE TODAY BEFORE MUCH COOLER
TEMPERATURES ARRIVE ON WEDNESDAY AND CONTINUE INTO THE WEEKEND.
TEMPERATURES WILL BE SEVERAL DEGREES WARMER TODAY THAN WAS THE
CASE MONDAY WITH LOWER HUMIDITIES AROUND 20 PERCENT. SCATTERED
CLOUDS CAN BE EXPECTED TODAY AS A STRONG COOL FRONT APPROACHES
THE BURN SITE. SOUTHWEST WINDS 10 TO 20 MPH WILL DEVELOP AHEAD OF
THE FRONT BY LATE THIS MORNING AND CONTINUE INTO EARLY EVENING.
FRONTAL PASSAGE IS EXPECTED TO BE AROUND MID TO LATE EVENING.
GUSTY NORTHWEST WINDS WILL BE USHERED IN BEHIND THE FRONT
TONIGHT AND CONTINUE THROUGH THE DAY WEDNESDAY. TEMPERATURES WILL
BE MUCH COOLER WEDNESDAY ALONG WITH HIGHER HUMIDITIES. HOOLEY


.TODAY...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....84-89.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......EAST WINDS 5 TO 10 MPH IN THE MORNING SHIFTING
                    TO THE SOUTHWEST 10 TO 20 MPH IN THE AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
 RIDGETOP...........SOUTHWEST 15 TO 25 MPH.
MIXING HEIGHT.......12200 FT AGL.
MIXING WINDS........WEST 10 TO 20 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED THUNDERSTORMS IN THE
                    EVENING. ISOLATED RAIN SHOWERS THROUGH THE
                    NIGHT.
MIN TEMPERATURE.....46-51.
MAX HUMIDITY........63-68 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 10 TO 20 MPH BECOMING NORTHWEST.
                    GUSTS UP TO 30 MPH
                    OVERNIGHT. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE EVENING.
 RIDGETOP...........SOUTHWEST 25 TO 40 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........WEST 25 TO 40 MPH.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND
                    ISOLATED RAIN SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....61-66.
MIN HUMIDITY........35-40 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 15 TO 25 MPH. GUSTS UP TO 30
                    MPH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
 RIDGETOP...........WEST 15 TO 30 MPH.
MIXING HEIGHT.......8400 FT AGL.
MIXING WINDS........NORTHWEST 15 TO 30 MPH.

$$
FORECASTER...HOOLEY
REQUESTED BY...MIKE BEARCOMESOUT
TYPE OF REQUEST...PRESCRIBED
.TAG 20090519.BLACK.01/BYZ