FNUS75 KRIW 091653
FWSRIW

SPOT FORECAST FOR WEST SLOPE RX...BLM
NATIONAL WEATHER SERVICE RIVERTON WY
1053 AM MDT WED MAY 9 2012

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON MAY 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE HOLDS ON THROUGH TONIGHT WITH A MOSTLY CLEAR SKY
AND LIGHT WINDS. A COLD FRONT THEN APPROACHES LATE THURSDAY
MORNING WITH A WIND SHIFT AND INCREASING CLOUDS. BY THURSDAY
AFTERNOON...NORTHERLY SURFACE WINDS WILL GUST AT TIMES AND
CONTINUE THROUGH THURSDAY EVENING. THERE IS ALSO A CHANCE FOR
SHOWERS AND ISOLATED THUNDERSTORMS DURING THIS TIME.

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

FORECASTER...LYNOTT

.TODAY...
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
MAX TEMPERATURE.....74-77.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-8 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3400-4400 FT AGL INCREASING TO 7700-8700 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE SOUTHWEST
                    8 TO 13 MPH BY AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (32700-73900 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
MIN TEMPERATURE.....45-49.
MAX HUMIDITY........40-43 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......7500-8500 FT AGL DECREASING TO 2900-3900 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE SOUTHEAST 7
                    TO 10 MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....POOR TO GOOD (28100-73500 KNOT-FT).

.THURSDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
                    CLOUDY (85-95 PERCENT). ISOLATED RAIN SHOWERS
                    LATE IN THE MORNING...THEN SCATTERED RAIN SHOWERS
                    AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....63-66.
MIN HUMIDITY........27-30 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-8 MPH BECOMING NORTHWEST
                    AROUND 14 MPH AND GUSTY LATE IN THE AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR ANY
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHEAST AROUND 8 MPH SHIFTING TO THE WEST IN
                    THE LATE MORNING AND EARLY AFTERNOON...THEN
                    SHIFTING TO THE NORTHWEST AROUND 20 MPH LATE IN
                    THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.6 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1900-2900 FT AGL INCREASING TO 4600-5600 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST AROUND 8 MPH SHIFTING TO THE
                    SOUTHWEST AROUND 12 MPH LATE IN THE
                    MORNING...THEN INCREASING TO WEST 20 TO 25 MPH
                    IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (27400-70300 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...COLDER. MOSTLY CLOUDY. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 30S.
NORTH WINDS AROUND 11 MPH.
.FRIDAY...COOLER. PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN
THE LOWER 50S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE
LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LYNOTT
REQUESTED BY...MONONI
REASON FOR REQUEST...PRESCRIBED
.TAG 20120509.WESTS.02/RIW