FNUS75 KRIW 011027 FWSRIW SPOT FORECAST FOR NOWLIN FIRE...USFS BTF NATIONAL WEATHER SERVICE RIVERTON WY 427 AM MDT THU SEP 1 2011 FORECAST IS BASED ON REQUEST TIME OF 2141 MDT ON AUGUST 31. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER TROUGH OF LOW PRESSURE AND ASSOCIATED COLD FRONT WILL PUSH ACROSS THE AREA AROUND NOON TODAY. ISOLATED SHOWERS AND POSSIBLY A THUNDERSTORM WILL DEVELOP ALONG THE FRONT...BUT ANY THUNDERSTORM ACTIVITY IS LIKELY DEVELOP WELL NORTH AND EAST OF THE FIRE. A MUCH COOLER AND DRIER WESTERLY FLOW WILL FOLLOW THE TROUGH LATE THIS AFTERNOON AND OVERNIGHT. A VERY DRY AND STABLE WESTERLY FLOW WILL CONTINUE THROUGH FRIDAY. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...MEUNIER .TODAY... SKY/WEATHER.........MOSTLY SUNNY IN THE MORNING. BECOMING PARTLY CLOUDY AROUND NOON WITH ISOLATED SHOWERS AND THUNDERSTORMS IN THE VICINITY...MAINLY TO THE NORTH AND EAST. MAX TEMPERATURE.....57-60. MIN HUMIDITY........23-26 PERCENT. 20 FOOT WINDS.......SOUTH TO SOUTHEAST 4 TO 7 MPH...BECOMING WEST SOUTHWEST AROUND 1000 AND INCREASING TO 10 TO 15 MPH BY EARLY AFTERNOON...BECOMING MORE WEST NORTHWEST AFTER 1500. RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH...BECOMING WEST 20 TO 25 MPH IN THE AFTERNOON. LAL.................1 UNTIL 1200...THEN 2. CHC OF WETTING RAIN.3 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4300-5300 FT AGL INCREASING TO 6700-7700 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH INCREASING TO 25 TO 30 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (92200 KNOT-FT) INCREASING TO EXCELLENT (176500 KNOT-FT) IN THE AFTERNOON. .TONIGHT... SKY/WEATHER.........BECOMING CLEAR EARLY EVENING (0-10 PERCENT). MIN TEMPERATURE.....33-36. MAX HUMIDITY........58-61 PERCENT. 20 FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS 20 TO 25 MPH UNTIL AROUND SUNSET...DIMINISHING AND BECOMING SOUTH TO SOUTHEAST BETWEEN 2000 AND MIDNIGHT. RIDGE TOP WINDS.....WEST 15 TO 20 MPH UNTIL SUNSET...BECOMING SOUTHWEST 10 TO 15 MPH OVERNIGHT. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2500-3500 FT AGL DECREASING TO 400 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST AROUND 25 MPH THROUGH 2000...BECOMING SOUTHWEST 10 TO 15 MPH OVERNIGHT. SMOKE DISPERSAL.....VERY GOOD (104700 KNOT-FT) DECREASING TO POOR (14200 KNOT-FT) AFTER MIDNIGHT. .FRIDAY... SKY/WEATHER.........SUNNY (0-10 PERCENT). MAX TEMPERATURE.....56-59. MIN HUMIDITY........18-21 PERCENT. 20 FOOT WINDS.......SOUTH TO SOUTHEAST 4 TO 7 MPH...BECOMING WEST SOUTHWEST AROUND 1000 AND INCREASING TO 10 TO 15 MPH BY EARLY AFTERNOON...BECOMING MORE WESTERLY THROUGH THE AFTERNOON WITH GUSTS OF 20 TO 25 MPH. RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH...BECOMING WEST 20 TO 25 MPH IN THE AFTERNOON. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1900-2900 FT AGL INCREASING TO 4400-4900 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 15 MPH BECOMING WEST 25 TO 30 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....FAIR (45800 KNOT-FT) INCREASING TO VERY GOOD (104300 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .FRIDAY NIGHT...CLEAR. LOWS IN THE MID 30S. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. .LABOR DAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...MEUNIER REQUESTED BY...GARY YETTER REASON FOR REQUEST...WILDFIRE .TAG 20110831.NOWLI.01/RIW