FNUS75 KRIW 042001 FWSRIW SPOT FORECAST FOR NORTON POINT...USFS SHF NATIONAL WEATHER SERVICE RIVERTON WY 201 PM MDT THU AUG 4 2011 FORECAST IS BASED ON REQUEST TIME OF 1247 MDT ON AUGUST 04. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER LEVEL DISTURBANCE OVER SOUTHERN IDAHO WILL BE TRACKING NORTHEAST ACROSS WYOMING TONIGHT. SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE FIRE AREA FOR THE REMAINDER OF THIS AFTERNOON AS THE AIRMASS DESTABILIZES AND MOISTURE INCREASES AHEAD OF THIS WEATHER FEATURE. THESE STORMS WILL PERSIST WELL INTO THE NIGHT TONIGHT AS THIS WEATHER FEATURE TRACKS ACROSS THE AREA. ISOLATED SHOWERS OR THUNDERSTORMS WILL LINGER IN THE FIRE AREA THROUGH FRIDAY MORNING. SCATTERED THUNDERSTORMS WILL REDEVELOP FRIDAY AFTERNOON AND LINGER INTO THE EVENING. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...LIPSON .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING PARTLY CLOUDY (55-65 PERCENT). NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE EVENING...THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....45-48. MAX HUMIDITY........68-78 PERCENT. 20 FOOT WINDS.......NORTHWEST 4-7 MPH UNTIL 2000. WINDS BECOMING NORTH AT 10 TO 17 MPH EXCEPT NORTHWEST ALONG THE FRONTIER CREEK. WINDS ALONG THE WIGGINS FORK COULD INCREASE TO 10 TO 20 MPH AT TIMES AFTER 2000. BY MIDNIGHT WINDS WILL ONCE AGAIN BECOME NORTHWEST AT 4 TO 7 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH SHIFTING TO THE NORTHWEST AFTER MIDNIGHT...THEN SHIFTING TO THE EAST LATE IN THE NIGHT. LAL.................4 UNTIL 2400...THEN 2. CHC OF WETTING RAIN.54 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5800-6800 FT AGL. TRANSPORT WINDS.....SOUTHWEST 12 TO 15 MPH SHIFTING TO THE SOUTHEAST 12 TO 13 MPH AFTER MIDNIGHT. SMOKE DISPERSAL.....POOR TO GOOD (39100-70900 KNOT-FT). .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS. MAX TEMPERATURE.....69-72 AT 8000 FEET AND 61 TO 64 AT 10000 FEET. MIN HUMIDITY........24-26 PERCENT AT 8000 FEET AND 30 TO 33 PERCENT AT 10000 FEET. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST AROUND 11 MPH WITH HIGHER GUSTS LATE IN THE AFTERNOON. HOWEVER WINDS WILL BE NORTHWEST AT THE SAME SPEEDS ALONG FRONTIER CREEK AND SOUTHWEST ALONG CALDWELL CREEK. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. WIND SPEEDS WILL INCREASE TO 10 TO 20 MPH MOST AREAS BY 2200. RIDGE TOP WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE SOUTHWEST AROUND 20 MPH LATE IN THE AFTERNOON. LAL.................2. CHC OF WETTING RAIN.34 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......7100-8100 FT AGL INCREASING TO 9300-9800 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 13 TO 22 MPH. SMOKE DISPERSAL.....GOOD (88500 KNOT-FT) INCREASING TO EXCELLENT (156000 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .FRIDAY NIGHT...PARTLY CLOUDY. SCATTERED SHOWERS AND CHANCE OF THUNDERSTORMS IN THE EVENING...THEN SLIGHT CHANCE OF THUNDERSTORMS AND ISOLATED SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 40S. WEST WINDS 10 TO 18 MPH EXCEPT NORTHWEST 10 TO 18 MPH ALONG THE FRONTIER CREEK. WINDS DECREASING TO 4 TO 7 MPH AFTER MIDNIGHT. .SATURDAY...MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS AND ISOLATED SHOWERS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S AT 8000 FEET AND MID 60S AT 10000 FEET. MINIMUM RELATIVE HUMIDITY 19 PERCENT AT 8000 FEET AND 24 PERCENT AT 10000 FEET. WEST WINDS 4 TO 8 MPH IN THE MORNING AND THEN 10 TO 18 MPH AFTER 1200. HOWEVER WINDS WILL BE NORTHWEST ALONG THE FRONTIER CREEK AND SOUTHWEST ALONG THE CALDWELL CREEK. DOWNSLOPE WINDS 2 TO 4 MPH ARE EXPECTED SATURDAY NIGHT BUT NORTHWEST WINDS WILL INCREASE TO 5 TO 10 MPH TOWARD MORNING. .SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS AND ISOLATED SHOWERS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S EXCEPT UPPER 60S AT 10000 FEET. MINIMUM RELATIVE HUMIDITY WILL BE 17 PERCENT AT 8000 FEET AND 21 PERCENT AT 10000 FEET. NORTHWESTERLY 8 TO 12 MPH WINDS ARE EXPECTED IN THE MORNING FOLLOWED BY LIGHT UPSLOPE WINDS IN THE AFTERNOON AT 3 TO 6 MPH. .MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. .TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...LIPSON REQUESTED BY...JESSE DUHNKRACK REASON FOR REQUEST...WILDFIRE .TAG 20110804.NORTO.01/RIW