FNUS75 KRIW 041112 FWSRIW SPOT FORECAST FOR WEST SLOPE RX...BLM WOD NATIONAL WEATHER SERVICE RIVERTON WY 512 AM MDT WED APR 4 2012 FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON APRIL 04. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL SLOWLY MOVE TOWARD THE REGION TODAY...GRADUALLY INCREASING CLOUD COVER TODAY. A WEAK DISTURBANCE AHEAD OF THIS SYSTEM WILL INCREASE WINDS SLIGHTLY THIS AFTERNOON. CONDITIONS WILL TREND A BIT WARMER AND DRIER TODAY. A COLD FRONT WILL SLIDE SOUTH INTO THE BIG HORN BASIN OVERNIGHT...INCREASING RH'S AND LOWERING TEMPERATURES FOR THURSDAY. THERE IS A FAIR AMOUNT OF UNCERTAINTY IN THE LOCATION AND STRENGTH OF THE FRONT ON THURSDAY...THUS...CONFIDINCE IS LOWER THAN AVERAGE FOR THURSDAY'S FORECAST ALONG THE WEST SLOPES OF THE BIGHORNS. THIS FRONT WILL BRING A FEW RAIN SHOWERS TO THE AREA BEGINNING THURSDAY MORNING...WITH SHOWER ACTIVITY INCREASING THURSDAY NIGHT INTO FRIDAY AS THE FRONT FINALLY PUSHES ACROSS THE REST OF THE STATE. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...WOLCOTT .TODAY... SKY/WEATHER.........MOSTLY CLEAR...BECOMING PARTLY CLOUDY IN THE AFTERNOON. MAX TEMPERATURE.....64-68. MIN HUMIDITY........22-26 PERCENT. 20 FOOT WINDS.......SOUTH 5 TO 9 MPH. RIDGE TOP WINDS.....SOUTHWEST 8 TO 15 MPH GRADUALLY INCREASING TO AROUND 15 MPH LATE IN THE AFTERNOON. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3800-4800 FT AGL GRADUALLY INCREASING TO 7100-8100 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 7 TO 12 MPH. SMOKE DISPERSAL.....POOR...GRADUALLY INCREASING TO GOOD IN THE AFTERNOON. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY. MIN TEMPERATURE.....38-42. MAX HUMIDITY........54-59 PERCENT. 20 FOOT WINDS.......NORTHEAST 4-7 MPH BECOMING NORTHWEST 7-12 BETWEEN 2100L AND 2400L. GUSTS UP TO 15 MPH. RIDGE TOP WINDS.....SOUTH AROUND 15 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5500-6500 FT AGL DECREASING TO 2000-3000 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....SOUTH 10 TO 16 MPH...BECOMING NORTHWEST 18-24 MPH BETWEEN 2100L AND 2400L. SMOKE DISPERSAL.....GOOD...DECREASING TO POOR AFTER MIDNIGHT. .THURSDAY... SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE MORNING...THEN ISOLATED RAIN SHOWERS IN THE AFTERNOON. MAX TEMPERATURE.....54-60. MIN HUMIDITY........31-37 PERCENT. 20 FOOT WINDS.......SOUTHEAST 5-9 MPH...BECOMING NORTHWEST 6-12 MPH IN THE AFTERNOON. RIDGE TOP WINDS.....SOUTH 13-18 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2100-3100 FT AGL INCREASING TO 5000-6000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH SHIFTING TO THE NORTHWEST AROUND 20 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....POOR...INCREASING TO VERY GOOD IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .THURSDAY NIGHT...CLOUDY. SCATTERED RAIN SHOWERS IN THE EVENING... THEN CHANCE OF RAIN AND SNOW AFTER MIDNIGHT. LOWS IN THE MID 30S. WINDS GENERALLY LESS THAN 10 MPH. .FRIDAY...COLDER. MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. LOWS IN THE MID 20S. HIGHS IN THE MID 40S. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...PARTLY CLOUDY WITH ISOLATED SNOW SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 40S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...WOLCOTT REQUESTED BY...MICHAEL WENGERT REASON FOR REQUEST...PRESCRIBED .TAG 20120404.WESTS.01/RIW