FNUS75 KRIW 261048 FWSRIW SPOT FORECAST FOR BULL...TETON INTERAGENCY DISPATCH NATIONAL WEATHER SERVICE RIVERTON WY 448 AM MDT THU AUG 26 2010 FORECAST IS BASED ON REQUEST TIME OF 1833 MDT ON AUGUST 25. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM MDT THIS EVENING... .DISCUSSION...A RED FLAG WARNING IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM MDT THIS EVENING. A WARM AND DRY SOUTHWEST FLOW WILL PREVAIL TODAY AHEAD OF SLOW MOVING COLD FRONT OVER THE INTERMOUNTAIN WEST. TEMPERATURES WILL TREND WARMER...RELATIVE HUMIDITY SLIGHTLY DRIER AND WINDS A BIT STRONGER THAN WEDNESDAY. SUB- TROPICAL MOISTURE WILL SURGE NORTHWARD ACROSS THE GREAT BASIN TONIGHT AHEAD OF THE FRONT WITH A FEW SHOWERS MOVING IN AFTER MIDNIGHT. ISOLATED MORNING SHOWERS AND SCATTERED AFTERNOON THUNDERSTORMS ARE EXPECTED FRIDAY WITH CHANCES OF SHOWERS AND THUNDERSTORMS CONTINUING OVER THE WEEKEND ALONG WITH AN OVERALL COOLER AND WETTER TREND. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...MEUNIER .TODAY... SKY/WEATHER.........SUNNY (0-10 PERCENT). MAX TEMPERATURE.....FROM NEAR 82 AT BOTTOM TO 78 AT TOP. MIN HUMIDITY........12-15 PERCENT. 20 FOOT WINDS.......EAST 3 TO 6 MPH BECOMING SOUTH SOUTHWEST 5 TO 10 MPH BETWEEN 1000L AND NOON...AND BECOMING SOUTHWEST 8 TO 13 MPH WITH GUSTS OF 20 TO 25 MPH BY 1400L. RIDGE TOP WINDS.....SOUTH SOUTHWEST 5 TO 9 MPH BECOMING SOUTHWEST AROUND 15 MPH WITH GUSTS 20 TO 25 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.......3200-4200 FT AGL INCREASING TO 9600-10600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH IN THE MORNING. SOUTHWEST 20 TO 25 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....FAIR (42500 KNOT-FT) INCREASING TO EXCELLENT (171600 KNOT-FT) IN THE AFTERNOON. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). BECOMING PARTLY CLOUDY WITH ISOLATED RAIN SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....45-48 ABOVE 8000 FEET TO 55-60 IN THE THERMAL BELT 7500 TO 8000 FEET. MAX HUMIDITY........55-60 PERCENT...35-40 PERCENT IN THERMAL BELT. 20 FOOT WINDS.......WEST SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS 20 TO 25 MPH UNTIL AROUND SUNSET BECOMING SOUTH SOUTHEAST 5-9 MPH BETWEEN MIDNIGHT AND 0300L. RIDGE TOP WINDS.....SOUTH SOUTHWEST 10 TO 15 MPH WITH GUSTS OF 20 TO 25 MPH THROUGH SUNSET DECREASING TO 5 TO 10 MPH BY MIDNIGHT. LAL.................1. CHC OF WETTING RAIN.LESS THAN 5 PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6800-7800 FT AGL DECREASING TO 1600 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....SOUTH SOUTHWEST AROUND 15 TO 20 MPH. SMOKE DISPERSAL.....VERY GOOD (148100 KNOT-FT) DECREASING TO POOR (20500 KNOT-FT) AFTER MIDNIGHT. .FRIDAY... SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED RAIN SHOWERS IN THE MORNING...THEN SCATTERED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....66-71. MIN HUMIDITY........26-29 PERCENT. 20 FOOT WINDS.......SOUTHEAST 4-7 MPH BECOMING WEST NORTHWEST 5 TO 10 MPH AROUND 0900L AND THEN SOUTHWEST 14 TO 17 MPH WITH GUSTS TO AROUND 25 MPH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. RIDGE TOP WINDS.....SOUTH SOUTHWEST 5-9 MPH BECOMING WEST NORTHWEST AROUND 10 MPH AT 0900L AND THEN SOUTHWEST 10 TO 15 MPH WITH GUSTS 20 TO 25 MPH IN THE AFTERNOON. LAL.................1 UNTIL 1200...THEN 3. CHC OF WETTING RAIN.10 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3700-4700 FT AGL INCREASING TO 8200-9200 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST AROUND 12 MPH INCREASING TO SOUTHWEST 22 TO 28 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....GOOD (68000 KNOT-FT) INCREASING TO EXCELLENT (178400 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .FRIDAY NIGHT...PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 60S. SOUTHEAST WINDS AROUND 12 MPH. .SUNDAY...PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 50S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...MEUNIER REQUESTED BY...TIDC REASON FOR REQUEST...WILDFIRE .TAG 20100825.BULL_.01/RIW