FNUS75 KRIW 201436
FWSRIW

SPOT FORECAST FOR BEARTOOTH FACE...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
836 AM MDT MON APR 20 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A RIDGE OF HIGH PRESSURE CONTINUES TO INFLUENCE THE BURN SITE
TODAY BRINGING ANOTHER DAY OF WARMING TEMPERATURES AND LOWERING
HUMIDITIES. WINDS WILL BE GUSTY TODAY AS A WEAK UPPER LEVEL
DISTURBANCE MOVES THROUGH. THIS WILL BRING ADDITIONAL HIGH LEVEL
CLOUDS BY THIS AFTERNOON...WITH SOME MID LEVEL CLOUDS PRESENT AS
WELL. HIGH PRESSURE WILL DOMINATE THE BURN SITE AGAIN ON TUESDAY
ALLOWING TEMPERATURES TO RISE TO THE UPPER 60S WITH HUMIDITIES
DIPPING INTO THE UPPER TEENS POTENTIALLY. EXPECT WINDS TO BE
WEAKER ACROSS THE BURN SITE BY TUESDAY AFTERNOON.


...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS...
...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT...

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........INCREASING TO PARTLY CLOUDY (45-55 PERCENT) BY
                    1100.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........20-23 PERCENT.
20 FOOT WINDS.......SOUTH SOUTHWEST AT 5 TO 10 MPH WITH GUSTS TO
                    AROUND 15 MPH. BECOMING NORTHWEST WINDS 11 TO 17 MPH
                    WITH GUSTS TO AROUND 25 MPH BY 1300.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 INCREASING TO 20 TO 25 MPH BY
                    1300.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300-1300 FT AGL INCREASING TO 3700-4300 FT AGL
                    BY 1400.
TRANSPORT WINDS.....NORTH 10 TO 15 INCREASING TO 20 TO 24 MPH
                    BY 1300.
SMOKE DISPERSAL.....POOR (15100 KNOT-FT) INCREASING TO GOOD (75700
                    KNOT-FT) BY 1300.

.TONIGHT...
SKY/WEATHER.........BECOMING MOSTLY CLEAR (25-35 PERCENT) BY 2300.
MIN TEMPERATURE.....39-44.
MAX HUMIDITY........58-64 PERCENT.
20 FOOT WINDS.......WEST WINDS 11 TO 15 MPH WITH GUSTS TO AROUND 25
                    MPH.
RIDGE TOP WINDS.....NORTHWEST 20 TO 25 MPH SHIFTING TO THE WEST
                    AROUND 15 MPH BY 0400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 200-1100 FT AGL BY 0200.
TRANSPORT WINDS.....NORTH 17 TO 23 MPH.
SMOKE DISPERSAL.....POOR (2800-12600 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....64-69.
MIN HUMIDITY........19-24 PERCENT.
20 FOOT WINDS.......SOUTH SOUTHWEST WINDS AROUND 10 MPH WITH
                    HIGHER GUSTS BECOMING UPSLOPE/UPVALLEY
                    5-9 MPH BY 1300.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......200-1100 FT AGL INCREASING TO 6900-7900 FT AGL
                    BY 1300.
TRANSPORT WINDS.....NORTH 15 TO 18 MPH.
SMOKE DISPERSAL.....POOR (9400 KNOT-FT) INCREASING TO GOOD (99200
                    KNOT-FT) BY 1400.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 40S. WEST WINDS
AROUND 10 MPH.
.WEDNESDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.
SOUTHWEST WINDS AROUND 12 MPH.
.THURSDAY...MOSTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS...SNOW
SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS
IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...COOLER. MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 50S. NORTH WINDS
AROUND 11 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...CLINT DAWSON
REASON FOR REQUEST...PRESCRIBED
.TAG 20090421.BEART.01/RIW