FNUS75 KRIW 082140 FWSRIW SPOT FORECAST FOR POLE CREEK RX...USFS BTF NATIONAL WEATHER SERVICE RIVERTON WY 340 PM MDT WED SEP 8 2010 FORECAST IS BASED ON IGNITION TIME OF 1450 MDT ON SEPTEMBER 08. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS IS EXPECTED FOR THE REMAINDER OF THIS AFTERNOON AND TONIGHT AS A PACIFIC TROUGH OF LOW PRESSURE MAKING LANDFALL APPROACHES WYOMING. ON THURSDAY...SHOWERS AND THUNDERSTORMS WILL BECOME NUMEROUS ACROSS THE AREA AND WILL CONTINUE THROUGH THURSDAY NIGHT. ANY PRECIPITATION WILL FALL AS SNOW AT ELEVATIONS ABOVE 8000 FEET THURSDAY NIGHT. THESE SHOWERS WILL TAPER OFF FRIDAY MORNING. WARMER...DRIER AND BREEZY CONDITIONS WILL RETURN TO THE AREA THIS WEEKEND. ...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 (45-55 PERCENT). SCATTERED SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN ISOLATED SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....45-49. MAX HUMIDITY........60-62 PERCENT. 20 FOOT WINDS.......SOUTH SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS UP TO 30 MPH THROUGH 1900 ABOVE 8100 FEET. BELOW 8100 FEET SOUTH WINDS 10 TO 17 MPH THROUGH 1900. AFTER 1900 SOUTH SOUTHWEST WINDS 10 TO 17 MPH ABOVE 8100 FEET. BELOW 8100 FEET SOUTH WINDS 8 TO 12 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....SOUTH 20 TO 25 MPH. LAL.................4 UNTIL 2400...THEN 2. CHC OF WETTING RAIN.9 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5800-6800 FT AGL DECREASING TO 1700-2600 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....SOUTH 22 TO 30 MPH. SMOKE DISPERSAL.....EXCELLENT (154800 KNOT-FT) DECREASING TO FAIR (42500 KNOT-FT) AFTER MIDNIGHT. .THURSDAY... SKY/WEATHER.........CLOUDY (75-85 PERCENT). SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE MORNING...THEN NUMEROUS RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....53 AT 9200 FEET AND 61 AT 7400 FEET. MIN HUMIDITY........48 PERCENT AT 9200 FEET AND 37 PERCENT AT 7400 FEET. 20 FOOT WINDS.......ABOVE 8100 FEET SOUTH SOUTHWEST WINDS 10 TO 12 MPH THROUGH 1200. AFTER 1200 SOUTH SOUTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS TO 40 MPH. BELOW 8100 FEET... SOUTH WINDS OF 5 TO 10 MPH THROUGH 1200. AFTER 1200 SOUTH WINDS 12 TO 22 MPH WITH SOME GUSTS TO 30 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....SOUTH AROUND 20 MPH INCREASING TO SOUTHWEST AROUND 30 MPH IN THE AFTERNOON. LAL.................2. CHC OF WETTING RAIN.69 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4000-5000 FT AGL INCREASING TO 7300-8000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 22 TO 23 MPH INCREASING TO SOUTHWEST 33 TO 36 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....VERY GOOD (103900 KNOT-FT) INCREASING TO EXCELLENT (200100 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .THURSDAY NIGHT...CLOUDY. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS IN THE EVENING...THEN SCATTERED SNOW SHOWERS AND SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 30S. WEST WINDS AROUND 17 MPH. .FRIDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS...THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S. WEST WINDS AROUND 14 MPH. .SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS AROUND 60. WEST WINDS AROUND 10 MPH. .SUNDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...LIPSON REQUESTED BY...MCFARLAND REASON FOR REQUEST...PRESCRIBED .TAG 20100908.POLEC.01/RIW