FNUS75 KRIW 251158 FWSRIW SPOT FORECAST FOR BULL...IA TDC NATIONAL WEATHER SERVICE RIVERTON WY 558 AM MDT WED AUG 25 2010 FORECAST IS BASED ON REQUEST TIME OF 1827 MDT ON AUGUST 24. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...SUNNY SKIES WILL PREVAIL TODAY AND TONIGHT TEMPERATURES WILL TREND WARMER TODAY WHICH WILL RESULT IN LOWER RELATIVE HUMIDITY. DIURNAL WIND TRENDS WILL BE SIMILAR WITH A BIT STRONGER SW WINDS AT RIDGETOP LEVEL THIS AFTERNOON. THESE TRENDS WILL CONTINUE ON THURSDAY AS SOUTHWEST FLOW STRENGTHENS ALOFT WITH SKIES REMAINING MOSTLY CLEAR. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED FRIDAY AHEAD OF AN APPROACHING COLD FRONT. A MOIST UNSETTLED SOUTHWEST FLOW WILL PERSIST THROUGH THE WEEKEND BRINGING A CONTINUED CHANCE OF SHOWERS AND THUNDERSTORMS ALONG WITH A COOLING TREND SUNDAY THROUGH EARLY NEXT WEEK. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...MEUNIER .TODAY... SKY/WEATHER.........SUNNY (0 PERCENT). MAX TEMPERATURE.....79-82. MIN HUMIDITY........12-15 PERCENT. 20 FOOT WINDS.......EAST 4 TO 7 MPH BECOMING WEST SOUTHWEST 8 TO 13 MPH WITH GUSTS TO 20 MPH AROUND 1400L. RIDGE TOP WINDS.....SOUTH SOUTHWEST 5 TO 9 MPH BECOMING SOUTHWEST 10 TO 15 MPH AROUND 1400L. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2600-3600 FT AGL INCREASING TO 6000-6900 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH SOUTHWEST 5 TO 10 MPH BECOMING WEST SOUTHWEST AROUND 15 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO FAIR (27200-59300 KNOT-FT). .TONIGHT... SKY/WEATHER.........CLEAR (0 PERCENT). MIN TEMPERATURE.....37-40 WITH LOWS 47-50 IN THERMAL BELT 7500-8000 FEET. MAX HUMIDITY........NEAR 40 PERCENT IN THERMAL BELT TO 55-60 PERCENT ELSEWHERE. 20 FOOT WINDS.......WEST SOUTHWEST 8 TO 13 MPH WITH GUSTS TO 20 MPH UNTIL SUNSET...BECOMING EAST 4 TO 7 MPH BETWEEN MIDNIGHT AND 0300L. RIDGE TOP WINDS.....SOUTH SOUTHWEST 5 TO 9 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3100-4100 FT AGL DECREASING BELOW 1000 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST SOUTHWEST AROUND 10 MPH BECOMING SOUTH SOUTHWEST 5 TO 10 MPH AFTER 2100L. SMOKE DISPERSAL.....POOR (1200-34100 KNOT-FT). .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT) THEN BECOMING PARTLY CLOUDY (25-35 PERCENT). MAX TEMPERATURE.....80-83. MIN HUMIDITY........12-15 PERCENT. 20 FOOT WINDS.......EAST 4 TO 7 MPH BECOMING WEST SOUTHWEST 12 TO 18 MPH WITH GUSTS TO 30 MPH BETWEEN NOON AND 1400L. RIDGE TOP WINDS.....SOUTH SOUTHWEST 5 TO 9 MPH BECOMING SOUTHWEST 15 TO 20 MPH BETWEEN NOON AND 1400L. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5900-6900 FT AGL INCREASING TO 12100-12600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH SOUTHWEST 5 TO 10 MPH BECOMING SOUTHWEST 20 TO 25 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (80100 KNOT-FT) INCREASING TO EXCELLENT (167600 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTH WINDS AROUND 11 MPH. .FRIDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 11 MPH. .SATURDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS AROUND 60. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...MEUNIER REQUESTED BY...BULL OBS REASON FOR REQUEST...WILDFIRE .TAG 20100824.BULL_.01/RIW