FNUS75 KRIW 140950 FWSRIW SPOT FORECAST FOR HARDLUCK...USFS SHF NATIONAL WEATHER SERVICE RIVERTON WY 350 AM MDT WED AUG 14 2013 FORECAST IS BASED ON REQUEST TIME OF 1919 MDT ON AUGUST 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SHOWERS AND THUNDERSTORMS WILL BUILD OVER THE AREA ONCE AGAIN LATE THIS MORNING AND CONTINUE AT TIMES INTO THE EVENING. A DRIER AIRMASS WILL MOVE INTO THE AREA ON THURSDAY WITH ONLY ISOLATED AFTERNOON AND EVENING GUSTY THUNDERSTORMS EXPECTED. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...SKRBAC .TODAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) SCATTERED SHOWERS AND THUNDERSTORMS IN THE LATE MORNING AND AFTERNOON. MAX TEMPERATURE.....69-73 AT 8K AND 60-64 AT 10,400 FEET. MIN HUMIDITY........21-28 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST AROUND 10 MPH AND GUSTY LATE IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER 1100L. RIDGE TOP WINDS.....WEST 10 TO 15 MPH. LAL.................1 UNTIL 1000...THEN 2 UNTIL 1300L THEN 4. CHC OF WETTING RAIN.20 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5100-6100 FT AGL INCREASING TO 8000-9000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 12 TO 15 MPH. SMOKE DISPERSAL.....GOOD (61700 KNOT-FT) INCREASING TO VERY GOOD (120000 KNOT-FT) IN THE AFTERNOON. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). SCATTERED THUNDERSTORMS UNTIL 2000L...THEN ISOLATED SHOWERS UNTIL 2200L. MIN TEMPERATURE.....34-39 VALLEY FLOOR AND 40-45 MID AND UPPER ELEVATIONS. MAX HUMIDITY........66-71 PERCENT...EXCEPT 85-95 PERCENT VALLEY FLOOR. 20 FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND 15 MPH EARLY IN THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE EVENING. RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH DECREASING TO AROUND 5 MPH AFTER MIDNIGHT. LAL.................2 UNTIL 2000...THEN 1. CHC OF WETTING RAIN.5 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5500-6500 FT AGL DECREASING TO 500-1000 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH IN THE EVENING BECOMING THEN BECOMING WEST AROUND 6 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....GOOD (72000 KNOT-FT) DECREASING TO POOR (5000 KNOT-FT) AFTER MIDNIGHT. .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT) THEN BECOMING PARTLY CLOUDY (30-40 PERCENT). ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....71-76 AROUND 8K AND 62-67 AT 10,400 FEET. MIN HUMIDITY........16-19 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. RIDGE TOP WINDS.....WEST 10 TO 15 MPH. LAL.................1 UNTIL 1300...THEN 2. CHC OF WETTING RAIN.3 PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5000-6000 FT AGL INCREASING TO 9000-10000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 10 TO 16 MPH. SMOKE DISPERSAL.....GOOD (65500 KNOT-FT) INCREASING TO VERY GOOD (130300 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 40S. WINDS GENERALLY LESS THAN 10 MPH. .FRIDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS AROUND 80. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...SKRBAC REQUESTED BY...CLINT DAWSON REASON FOR REQUEST...WILDFIRE .TAG 20130813.HARDL.01/RIW