FNUS75 KRIW 201729 FWSRIW SPOT FORECAST FOR BULL...TIDC NATIONAL WEATHER SERVICE RIVERTON WY 1129 AM MDT MON SEP 20 2010 FORECAST IS BASED ON IGNITION TIME OF 1110 MDT ON SEPTEMBER 20. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A WEAK UPPER LEVEL DISTURBANCE WILL MOVE EAST OF THE REGION LATER TODAY...MAKING WAY FOR GUSTY WEST WINDS THROUGH TUESDAY. ALTHOUGH SURFACE WINDS SHOULD DECREASE TONIGHT...WEST WINDS OF 15 TO 25 MPH WILL BE COMMON WITH A FEW HIGHER GUSTS AT 8500 FEET AND HIGHER. WINDS AT SURFACE AND ALOFT WILL BECOME MORE SOUTHWESTERLY TUESDAY NIGHT INTO WEDNESDAY. OTHERWISE...A PARTLY CLOUDY SKY WILL BECOME CLEAR LATER THIS EVENING. NO PRECIPITATION IS EXPECTED UNTIL WEDNESDAY AFTERNOON OR EVENING. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...LYNOTT .TODAY... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). MAX TEMPERATURE.....60-64. MIN HUMIDITY........30-34 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST AROUND 17 MPH WITH GUSTS TO AROUND 30 MPH IN THE AFTERNOON. RIDGE TOP WINDS.....WEST AROUND 5 MPH INCREASING TO AROUND 15 MPH IN THE AFTERNOON. LAL.................1. CHC OF WETTING RAIN.LESS THAN 5 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3200-4200 FT AGL INCREASING TO 7000-7900 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST AROUND 6 MPH INCREASING TO 17 TO 23 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....FAIR (45200 KNOT-FT) INCREASING TO VERY GOOD (117600 KNOT-FT) IN THE AFTERNOON. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). MIN TEMPERATURE.....33-36. MAX HUMIDITY........72-79 PERCENT. 20 FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH IN THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH...THEN BECOMING SOUTHEAST AROUND 8 MPH EARLY IN THE MORNING. RIDGE TOP WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT...THEN SHIFTING TO THE SOUTH EARLY IN THE MORNING. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3700-4700 FT AGL DECREASING TO 400 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST 15 TO 16 MPH BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT...THEN SHIFTING TO THE SOUTH AROUND 7 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....FAIR (56400 KNOT-FT) DECREASING TO POOR (3000 KNOT-FT) AFTER MIDNIGHT. .TUESDAY... SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT). MAX TEMPERATURE.....59-63. MIN HUMIDITY........25-28 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 12 TO 17 MPH WITH GUSTS TO AROUND 25 MPH IN THE AFTERNOON. RIDGE TOP WINDS.....SOUTHEAST 5 TO 10 MPH SHIFTING TO THE SOUTHWEST AROUND 15 MPH 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.......3200-4200 FT AGL INCREASING TO 6900 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHEAST AROUND 9 MPH INCREASING TO SOUTHWEST 18 TO 22 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....FAIR (55700 KNOT-FT) INCREASING TO VERY GOOD (111400 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .TUESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 30S. SOUTHEAST WINDS AROUND 10 MPH. .WEDNESDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S. SOUTH WINDS AROUND 10 MPH. .THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID 50S. WINDS GENERALLY LESS THAN 10 MPH. .FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...LYNOTT REQUESTED BY...WAGNER REASON FOR REQUEST...PRESCRIBED .TAG 20100920.BULL_.01/RIW