FNUS75 KRIW 231620
FWSRIW

SPOT FORECAST FOR WEST SLOPE RX...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
1020 AM MDT MON APR 23 2012

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE CONTINUES TO BUILD TODAY...AND THEN WILL SLOWLY
BREAK DOWN THROUGH THURSDAY. UPPER FLOW WILL REMAIN FROM THE SOUTHWEST AND
TEMPERATURES WILL WARM TO WELL ABOVE NORMAL LEVELS TODAY AND
TUESDAY. WITH MID LEVEL MOISTURE INCREASING TUESDAY THERE MAY BE
ISOLATED DRY THUNDERSTORMS BY TUESDAY AFTERNOON. THUNDERSTORMS SHOULD BECOME
INCREASINGLY WET BY WEDNESDAY. EXPECT OCCASIONAL LIGHTNING AND VERY ERRATIC
AND GUSTY WINDS FROM OUTFLOWS WITH THE THUNDERSTORMS TUESDAY AND WEDNESDAY
AFTERNOON AND EVENING.

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

FORECASTER...LIPSON

.TODAY...
SKY/WEATHER.........SUNNY (0-5 PERCENT) THEN BECOMING PARTLY CLOUDY WITH SOME
                    CUMULUS BUILD UPS.
                    (35-45 PERCENT).
MAX TEMPERATURE.....85.
MIN HUMIDITY........11 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY OCCASIONALLY SOUTHEAST 3-7 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2800-3800 FT AGL INCREASING TO 7500-8500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 12 TO 17 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD (41400-88700 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (55-65 PERCENT). ISOLATED DRY
                    THUNDERSTORMS IN THE EVENING. ISOLATED RAIN
                    SHOWERS THROUGH THE NIGHT.
MIN TEMPERATURE.....50-53.
MAX HUMIDITY........53-56 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH MAINLY FROM THE NORTHEAST.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....EAST AROUND 10 MPH SHIFTING TO THE NORTH AFTER
                    MIDNIGHT...THEN SHIFTING TO THE EAST EARLY IN
                    THE MORNING.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5300-6300 FT AGL DECREASING TO 1500 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 13 MPH SHIFTING TO THE EAST AROUND
                    16 MPH LATE IN THE EVENING...THEN SHIFTING TO
                    THE SOUTH AROUND 7 MPH AFTER MIDNIGHT SHIFTING
                    TO THE EAST AROUND 9 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....POOR TO FAIR (11600-56600 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED RAIN
                    SHOWERS AND DRY THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....83.
MIN HUMIDITY........12 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY OCCASIONALLY SOUTHEAST 4-7 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.8 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3800-4800 FT AGL INCREASING TO 8300-9300 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 13 TO 16 MPH.
SMOKE DISPERSAL.....FAIR (53400 KNOT-FT) INCREASING TO VERY GOOD
                    (104200 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING...THEN ISOLATED SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 40S. WINDS GENERALLY LESS THAN
10 MPH.
.WEDNESDAY...PARTLY CLOUDY. OCCASIONAL SPRINKLES AND ISOLATED
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...COOLER. MOSTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS IN
THE UPPER 30S. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...MIKE WENGERT
REASON FOR REQUEST...PRESCRIBED
.TAG 20120424.WESTS.01/RIW