FNUS75 KBYZ 211203
FWSBYZ

SPOT FORECAST FOR SOUTH SLOPE 47...BIGHORN NATIONAL FOREST
NATIONAL WEATHER SERVICE BILLINGS MT
603 AM MDT SAT MAR 21 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON MARCH 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HIGH PRESSURE WILL CONTINUE TO HOLD IN PLACE ACROSS THE BURN SITE
FOR MOST OF THE DAY BUT BEGIN TO BREAK DOWN TONIGHT AHEAD OF
THE NEXT STORM SYSTEM WHICH WILL IMPACT THE AREA SUNDAY THROUGH
TUESDAY. SKIES WILL START MOSTLY CLEAR THIS MORNING BUT CLOUDS
WILL BE ON THE INCREASE THIS AFTERNOON. A FEW SHOWERS AND
POSSIBLY AN ISOLATED THUNDERSTORM CAN BE EXPECTED THIS AFTERNOON
AND THIS EVENING. SHOWER CHANCES WILL CONTINUE TONIGHT WITH
BETTER CHANCES DURING THE DAY SUNDAY. COLDER TEMPERATURES WILL
RETURN SUNDAY NIGHT AND MONDAY ALONG WITH THE LIKELIHOOD OF
SNOW. IN ADDITION...STRONG NORTHERLY WINDS CAN BE EXPECTED
RESULTING IN BLOWING AND DRIFTING OF SNOW AND POOR VISIBILITIES.

.TODAY...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................8 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....58-63.
MIN HUMIDITY........26-31 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
 RIDGETOP...........SOUTH 15 TO 30 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........SOUTH 15 TO 25 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED THUNDERSTORMS IN THE
                    EVENING. ISOLATED RAIN SHOWERS THROUGH THE
                    NIGHT.
CWR.................9 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....35-40.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH WINDS 15 TO 25 MPH. GUSTS UP TO 30 MPH
                    OVERNIGHT. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE EVENING.
 RIDGETOP...........SOUTHWEST 20 TO 35 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........SOUTHWEST 30 TO 45 MPH.

.SUNDAY...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS.
CWR.................22 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....49-54.
MIN HUMIDITY........37-42 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 10 TO 20 MPH.
 RIDGETOP...........SOUTHWEST 20 TO 35 MPH.
MIXING HEIGHT.......10000 FT AGL.
MIXING WINDS........SOUTHWEST 30 TO 45 MPH.

$$
FORECASTER...HOOLEY
REQUESTED BY...CURTIS RASMUSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20090321.SOUTH.01/BYZ