FNUS75 KRIW 040947 FWSRIW SPOT FORECAST FOR GAMBEL S BASIN...BLM WOD NATIONAL WEATHER SERVICE RIVERTON WY 347 AM MDT THU APR 4 2013 FORECAST IS BASED ON IGNITION TIME OF 2035 MDT ON APRIL 03. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A RIDGE OF HIGH PRESSURE WILL BRING WARMER TEMPERATURES TODAY WITH THE AIRMASS NOT QUITE AS DRY AS ON WEDNESDAY. THE BURN SITE WILL BE CLOSE TO THE MOUNTAIN/VALLEY BREEZE BOUNDARY WITH UPSLOPE WINDS EXPECTED TO PREVAIL THROUGH THE MORNING INTO EARLY AFTERNOON. DOWNSLOPE WEST SOUTHWEST WINDS WILL INCREASE AND BECOME GUSTY THROUGH THE LATE AFTERNOON AND EVENING. THESE INCREASING WINDS WILL PRECEDE A COLD FRONTAL PASSAGE AROUND MIDDAY FRIDAY WITH VERY WINDY CONDITIONS DEVELOPING WITH THE FRONTAL PASSAGE. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...MEUNIER .TODAY... SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) IN THE MORNING. BECOMING MOSTLY CLOUDY (70-80 PERCENT) IN THE AFTERNOON. MAX TEMPERATURE.....55-58. MIN HUMIDITY........26-29 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH IN THE MORNING AND EARLY AFTERNOON. BECOMING SOUTHWEST 10 TO 15 MPH WITH GUSTS 20 TO 25 MPH AROUND 1500L. RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2800-3800 FT AGL. TRANSPORT WINDS.....SOUTHWEST 12 TO 20 MPH. SMOKE DISPERSAL.....POOR IN THE MORNING BECOMING FAIR BETWEEN 1400L AND 1600L (38400-51300 KNOT-FT). .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY PARTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 40. MAX HUMIDITY........68-71 PERCENT. 20 FOOT WINDS.......WEST WINDS 8 TO 16 MPH. GUSTS UP TO 20 MPH INCREASING TO 30 MPH IN THE LATE EVENING AND OVERNIGHT. RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2500-3500 FT AGL. TRANSPORT WINDS.....SOUTHWEST 15 TO 23 MPH. SMOKE DISPERSAL.....POOR TO FAIR (38800-56600 KNOT-FT). .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SCATTERED RAIN SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....50-53. MIN HUMIDITY........29-32 PERCENT. 20 FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH HIGHER GUSTS IN THE MORNING...THEN BECOMING WEST 11 TO 17 MPH WITH GUSTS TO AROUND 30 MPH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. RIDGE TOP WINDS.....WEST AROUND 15 MPH INCREASING TO AROUND 25 MPH LATE IN THE AFTERNOON. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1600-2600 FT AGL INCREASING TO 4100-5100 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 17 TO 20 MPH INCREASING TO AROUND 28 MPH LATE IN THE AFTERNOON. SMOKE DISPERSAL.....POOR (33700 KNOT-FT) INCREASING TO GOOD (93500 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .FRIDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS IN THE EVENING...THEN SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 30S. WEST WINDS AROUND 14 MPH. .SATURDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS. LOWS AROUND 30. HIGHS IN THE UPPER 40S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS. LOWS IN THE MID 20S. HIGHS IN THE LOWER 40S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS IN THE LOWER 20S. HIGHS IN THE UPPER 30S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...MEUNIER REQUESTED BY...JIM WOLF REASON FOR REQUEST...PRESCRIBED .TAG 20130403.GAMBE.01/RIW