FNUS75 KRIW 111101 FWSRIW SPOT FORECAST FOR RED ROCK...IA TDC NATIONAL WEATHER SERVICE RIVERTON WY 501 AM MDT SUN SEP 11 2011 FORECAST IS BASED ON REQUEST TIME OF 2012 MDT ON SEPTEMBER 10. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A MORE SOUTHERLY FLOW WILL DRAW UP MONSOONAL MOISTURE ACROSS WESTERN WYOMING THIS MORNING WITH SHOWERS AND THUNDERSTORMS BLOSSOMING WITHIN THE PLUME THIS AFTERNOON AND EVENING. THE MONSOONAL PLUME WILL REMAIN OVER THE AREA THROUGH MONDAY WITH THE FLOW ALOFT BECOMING MORE EASTERLY AROUND AN UPPER LEVEL LOW PRESSURE SYSTEM OVER NORTHERN UTAH. TEMPERATURES WILL TREND SLIGHTLY COOLER TODAY AND MONDAY DUE MAINLY TO AN INCREASE IN CLOUD COVER. RELATIVE HUMIDITY WILL ALSO TREND HIGHER. SURFACE WINDS WILL BECOME MORE UPVALLEY/UPSLOPE OR WESTERLY THIS AFTERNOON BUT CONVECTIVE OUTFLOWS WILL INCREASINGLY DOMINATE THE WIND FIELD THROUGH THE LATE AFTERNOON AND EVENING. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...MEUNIER .TODAY... SKY/WEATHER.........BECOMING PARTLY CLOUDY (45-55 PERCENT) AFTER 0900 WITH ISOLATED SHOWERS. MOSTLY CLOUDY (70-80 PERCENT) WITH WIDELY SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS AFTER 1400. MAX TEMPERATURE.....64-68. MIN HUMIDITY........28-31 PERCENT. 20 FOOT WINDS.......EAST TO SOUTHEAST 5 TO 10 MPH BECOMING UPSLOPE/UPVALLEY BETWEEN 1000 AND 1200. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS...PRIMARILY MOVING UP FROM THE SOUTH... IN THE AFTERNOON. RIDGE TOP WINDS.....SOUTHWEST 5 TO 10 MPH BECOMING WEST AFTER 1500. LAL.................1 UNTIL 1400...THEN 2. CHC OF WETTING RAIN.5 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY THROUGH 2100...THEN BECOMING PARTLY CLOUDY. SHOWER WIDELY SCATTERED SHOWERS AND THUNDERSTORMS...DECREASING AFTER 2100. ISOLATED RAIN SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....35-38. MAX HUMIDITY........76-79 PERCENT. 20 FOOT WINDS.......WEST SOUTHWEST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 15 MPH EARLY IN THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH AROUND MIDNIGHT. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE EVENING. RIDGE TOP WINDS.....WEST SOUTHWEST 10 TO 15 MPH. LAL.................2 UNTIL 2100...THEN 1. CHC OF WETTING RAIN.5 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .MONDAY... SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING MOSTLY CLOUDY (60-70 PERCENT). ISOLATED RAIN SHOWERS THROUGH THE DAY. ISOLATED THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....61-67. MIN HUMIDITY........33-36 PERCENT. 20 FOOT WINDS.......EAST SOUTHEAST 5-10 MPH BECOMING UPSLOPE/UPVALLEY 5-9 MPH BETWEEN 1000 AND NOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. RIDGE TOP WINDS.....WEST 5 TO 10 MPH. LAL.................1 UNTIL 1200...THEN 2. CHC OF WETTING RAIN.4 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .MONDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN ISOLATED SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 30S. WINDS GENERALLY LESS THAN 10 MPH. .TUESDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS...THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH. .WEDNESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS... ISOLATED THUNDERSTORMS AND SLIGHT CHANCE OF SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH. .THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...MEUNIER REQUESTED BY...JOHN FREEMAN REASON FOR REQUEST...WILDFIRE .TAG 20110910.REDRO.02/RIW