FNUS75 KRIW 180219 FWSRIW SPOT FORECAST FOR INITIAL ATTACK 359...BLM RSD NATIONAL WEATHER SERVICE RIVERTON WY 819 PM MDT WED AUG 17 2011 FORECAST IS BASED ON REQUEST TIME OF 1941 MDT ON AUGUST 17. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... WESTERLY FLOW WILL KEEP CONDITIONS DRY THROUGH THURSDAY WITH LITTLE CLOUD COVER. HUMIDITIES AROUND 10 PERCENT ARE LIKELY THURSDAY AFTERNOON AND WEST WINDS WILL BE A LITTLE HIGHER THAN WEDNESDAY. OVERNIGHT HUMIDITY RECOVERY TONIGHT AND THURSDAY NIGHT WILL BE POOR. A WEAK SURGE OF MONSOON MOISTURE WILL TRACK NORTH ACROSS THE FIRE SITE EARLY FRIDAY. THIS WILL SET THE STAGE FOR AFTERNOON SHOWERS AND THUNDERSTORMS ON FRIDAY. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...JONES .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT)...MAINLY HIGH CLOUDS. MIN TEMPERATURE.....55-58. MAX HUMIDITY........30-33 PERCENT. 20 FOOT WINDS.......WEST WIND 8 TO 12 MPH UNTIL 2300...THEN DOWNSLOPE/DOWNVALLEY 5 TO 8 MPH. RIDGE TOP WINDS.....WEST 10 TO 15 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......DECREASING TO LESS THAN 1500 FT AGL BY 2200. TRANSPORT WINDS.....WEST 10 TO 15 MPH UNTIL 2200...THEN BECOMING DOWNSLOPE/DOWNVALLEY 5 TO 9 MPH BY 0100. SMOKE DISPERSAL.....GOOD UNTIL 2100...THEN BECOMING POOR BY MIDNIGHT. .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). MAX TEMPERATURE.....82-85. MIN HUMIDITY........8-11 PERCENT. 20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4 TO 7 MPH UNTIL 0800... THEN BECOMING UPSLOPE/UPVALLEY 5 TO 9 MPH BY 1000. WINDS WILL INCREASE BETWEEN 1200 AND 1300 TO BE WEST 10 TO 15 MPH WITH GUSTS AROUND 25 MPH THROUGH THE AFTERNOON. RIDGE TOP WINDS.....WEST 10 TO 15 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......LESS THAN 2000 FT AGL UNTIL 1000...THEN GRADUALLY INCREASING TO AROUND 10000 FT AGL BY 1400. TRANSPORT WINDS.....DOWNSLOPE/DOWNVALLEY 5 TO 8 MPH UNTIL 0800... THEN GRADUALLY BECOMING WEST 10 TO 15 MPH BY 1200. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN BECOMING EXCELLENT BY 1400. .THURSDAY NIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) WITH CLOUDS INCREASING AFTER MIDNIGHT. ISOLATED SHOWERS AND THUNDERSTORMS...MAINLY DRY...COMING OFF THE UINTA MOUNTAINS UNTIL 2100. MIN TEMPERATURE.....56-59. MAX HUMIDITY........35-38 PERCENT. 20 FOOT WINDS.......WEST WIND 10 TO 15 MPH WITH GUSTS AROUND 22 MPH UNTIL 2000...THEN GRADUALLY BECOMING DOWNSLOPE/DOWNVALLEY 5 TO 8 MPH BY 2300. RIDGE TOP WINDS.....WEST 10 TO 15 MPH. LAL.................2 UNTIL 2100...THEN LAL 1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......DECREASING TO LESS THAN 1500 FT AGL BY 2200. TRANSPORT WINDS.....WEST 10 TO 15 MPH UNTIL 2000...THEN BECOMING DOWNSLOPE/DOWNVALLEY 5 TO 9 MPH BY MIDNIGHT. SMOKE DISPERSAL.....VERY GOOD UNTIL 2000...THEN BECOMING POOR BY MIDNIGHT. .FORECAST DAYS 3 THROUGH 5... .FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...JONES REQUESTED BY...JESSE HARRAND REASON FOR REQUEST...WILDFIRE .TAG 20110817.INITI.01/RIW