FNUS75 KRIW 170845 FWSRIW SPOT FORECAST FOR GREEN...USFS BTF NATIONAL WEATHER SERVICE RIVERTON WY 245 AM MDT SAT AUG 17 2013 FORECAST IS BASED ON REQUEST TIME OF 1851 MDT ON AUGUST 16. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...DRY WEATHER IS FORECAST FOR MOST OF TODAY AND TONIGHT. ANOTHER DAY WITH LOW RELATIVE HUMIDITY AND WARM AFTERNOON TEMPERATURES. ISOLATED AFTERNOON AND EVENING SHOWERS OR STORMS ARE FORECAST TO DEVELOP CLOSE TO OR AT THE FIRE SITE AFTER 1300. THE ACTIVITY WILL MOVE EAST DURING THE AFTERNOON AND EARLY EVENING. IN ADDITION...SHOWERS OR STORMS WILL MOVE IN FROM THE WEST ADDING TO THE THREAT. ONE WILL HAVE TO KEEP AN EYE TO THE WEST AFTER 1300 FOR THIS ACTIVITY. THE MAIN THREATS FROM THE SHOWERS OR STORMS WILL BE OUTFLOW WIND GUSTS TO 45 MPH AND A FEW LIGHTNING STRIKES. RAINFALL WILL BE LIGHT AND BRIEF. SUNDAY WILL SEE ANOTHER ROUND OF ISOLATED SHOWERS AND STORMS NEAR TO OR AT THE FIRE AFTER 1200 THROUGH 2000. AGAIN THE SHOWERS AND STORMS WILL BE MOVING TO THE EAST. TEMPERATURES WILL BE SLIGHTLY COOLER SUNDAY WITH MINIMUM RELATIVE HUMIDITY AT LITTLE HIGHER THAN SATURDAY. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...AR .TODAY... SKY/WEATHER.........MOSTLY SUNNY IN THE MORNING. THEN BECOMING PARTLY CLOUDY AFTER 1300. ISOLATED SHOWERS AND THUNDERSTORMS AFTER 1400. MAX TEMPERATURE.....75-79 AT 9000 FEET. MIN HUMIDITY........14-18 PERCENT AT 9000 FEET. 20 FOOT WINDS.......UPSLOPE/UPVALLEY AT 5 TO 8 MPH UNTIL 1300. WEST TO SOUTHWEST AT 6 TO 10 MPH AFTER 1300 WITH GUSTS TO 14 MPH. GUSTY AND ERRATIC WINDS TO 45 MPH NEAR SHOWERS OR STORMS. RIDGE TOP WINDS.....WEST TO SOUTHWEST AT 5 TO 10 MPH UNTIL 1300. WEST TO SOUTHWEST AT 10 TO 15 MPH AFTER 1300 WITH GUSTS TO 20 MPH. LAL.................1 UNTIL 1400...THEN 2. CHC OF WETTING RAIN.LESS THAN 5 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......INCREASING TO 8000-9000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST TO SOUTHWEST AT 5 TO 10 MPH UNTIL 1300. WEST AT 15 TO 20 MPH AFTER 1300. SMOKE DISPERSAL.....INCREASING TO VERY GOOD TO EXCELLENT IN THE AFTERNOON. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED SHOWERS AND THUNDERSTORMS UNTIL 2100. MIN TEMPERATURE.....48-52 AT 9000 FEET. MAX HUMIDITY........40-44 PERCENT. 20 FOOT WINDS.......WEST TO SOUTHWEST AT 5 TO 10 MPH UNTIL 2000. WIND BECOMING BECOMING DOWNSLOPE/DOWNVALLEY AT 4 TO 7 MPH AFTER 2000. RIDGE TOP WINDS.....WEST TO SOUTHWEST AT 10 TO 15 MPH UNTIL 2000. WEST TO SOUTHWEST AT 5 TO 10 MPH AFTER 2000. LAL.................2 UNTIL 2100...THEN 1. CHC OF WETTING RAIN.LESS THAN 5 PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......DECREASING TO 1500-2500 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST AROUND 15 MPH UNTIL 2000. WEST TO SOUTHWEST AT 5 TO 10 MPH AFTER 2000. SMOKE DISPERSAL.....DECREASING TO FAIR BY 2100...THEN BECOMING POOR AFTER MIDNIGHT. .SUNDAY... SKY/WEATHER.........PARTLY CLOUDY. INCREASING CLOUDS IN THE AFTERNOON. ISOLATED SHOWERS AND THUNDERSTORMS AFTER 1200. MAX TEMPERATURE.....72-75 AT 9000 FEET. MIN HUMIDITY........18-22 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY AT 5 TO 9 MPH UNTIL 1300. WEST TO SOUTHWEST AT 7 TO 11 MPH AFTER 1300 WITH GUSTS TO 15 MPH. GUSTY AND ERRATIC WINDS TO 45 MPH NEAR SHOWERS OR STORMS. RIDGE TOP WINDS.....WEST TO SOUTHWEST AT 6 TO 10 MPH UNTIL 1300. SOUTH TO SOUTHWEST AT 12 TO 17 MPH AFTER 1300 WITH GUSTS TO 23 MPH. LAL.................1 UNTIL 1200...THEN LAL OF 2. CHC OF WETTING RAIN.LESS THAN 5 PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......INCREASING TO 7500-8500 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST TO SOUTHWEST AT 5 TO 10 MPH UNTIL 1200. WEST AT 16 TO 21 MPH AFTER 1200. SMOKE DISPERSAL.....INCREASING TO VERY GOOD TO EXCELLENT IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .SUNDAY NIGHT...ISOLATED SHOWERS OR STORMS UNTIL 2000. THEN DECREASING CLOUDS. LOWS 43 TO 47. WEST TO SOUTHWEST WIND GENERALLY LESS THAN 10 MPH AFTER SUNSET. .MONDAY...MOSTLY CLEAR. HIGHS 73 TO 77. WEST WIND AT 10 TO 15 MPH IN THE AFTERNOON. .TUESDAY...PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 75 TO 79. WEST TO SOUTHWEST AT 10 TO 15 MPH IN THE AFTERNOON. .WEDNESDAY...PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON AND EVENING. LOWS 45 TO 50. HIGHS 73 TO 77. WEST WIND AT 10 TO 15 MPH IN THE AFTERNOON. $$ FORECASTER...ROSS REQUESTED BY...FILARDO REASON FOR REQUEST...WILDFIRE .TAG 20130816.GREEN.01/RIW