FNUS75 KRIW 240126 FWSRIW SPOT FORECAST FOR RED ROCK...NATIONAL PARK SERVICE NATIONAL WEATHER SERVICE RIVERTON WY 726 PM MDT TUE AUG 23 2011 FORECAST IS BASED ON REQUEST TIME OF 1833 MDT ON AUGUST 23. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...THE RED FLAG CONDITIONS HAVE SUBSIDED NEAR THE FIRE AREA AS THE WIND HAS DECREASED AND THE RELATIVE HUMIDITY HAS INCREASED A BIT. HOWEVER...BASED ON THE SMOKE PLUME...FIRE ACTIVITY WILL REMAIN ACTIVE WELL INTO THE NIGHT. A DRY FORECAST TONIGHT AND MOST OF WEDNESDAY AND WEDNESDAY NIGHT. THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS TO DEVELOP OVER THE MOUNTAINS AND THIS ACTIVITY WOULD CONTINUE INTO WEDNESDAY NIGHT. THE MAIN THREATS WILL BE WIND GUSTS TO 40 MPH OR HIGHER AND SOME LIGHTNING FROM THE STORMS. THE RAINFALL WOULD BE LIGHT AND BRIEF IN DURATION. ONE WILL NEED TO MONITOR THE SKY WEDNESDAY AFTERNOON AND EVENING FOR STORM GENERATION AND FOR STORMS MOVING NEAR OR INTO THE FIRE AREA. THE ACTIVITY WOULD BE MOVING FROM WEST TO EAST. EXPECT SIMILAR WEATHER CONDITIONS ON THURSDAY WITH SLIGHTLY COOLER TEMPERATURES AND A SLIGHTLY HIGHER MIN RH IN THE AFTERNOON. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...AR .TONIGHT... SKY/WEATHER.........CLEAR. MIN TEMPERATURE.....42-47 FOR AROUND 8500 FEET. MAX HUMIDITY........40-45 PERCENT FOR AROUND 8500 FEET. 20 FOOT WINDS.......SOUTH TO SOUTHWEST AT 5 TO 10 MPH UNTIL 2200. THEN SOUTH TO SOUTHWEST AT 3 TO 6 MPH. RIDGE TOP WINDS.....WEST TO SOUTHWEST AT 8 TO 12 MPH UNTIL 2200 WITH GUSTS AROUND 15 MPH. THEN WEST TO SOUTHWEST AT 5 TO 10 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......DECREASING TO 700-1000 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST AROUND 20 MPH UNTIL 2200...THEN WEST 10 TO 15 MPH. AFTER MIDNIGHT. SMOKE DISPERSAL.....GOOD UNTIL 2200...THEN DECREASING TO POOR AFTER MIDNIGHT. .WEDNESDAY... SKY/WEATHER.........SUNNY UNTIL 1100...THEN BECOMING PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER 1400. MAX TEMPERATURE.....73-77 FOR AROUND 8500 FEET. MIN HUMIDITY........13-18 PERCENT FOR AROUND 8500 FEET. 20 FOOT WINDS.......VARIABLE AT 3 TO 5 MPH UNTIL 1100...THEN SOUTHWEST AT 5 TO 9 MPH AFTER 1100 WITH GUSTS TO 15 MPH DURING THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON TO 30 MPH. RIDGE TOP WINDS.....SOUTHWEST TO WEST 5 TO 8 MPH UNTIL 1100. THEN SOUTHWEST TO WEST AT 8 TO 13 MPH AFTER 1100 WITH GUSTS TO 20 MPH DURING THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON TO 40 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 8000-10000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST TO SOUTHWEST AROUND 10 MPH UNTIL NOON. WEST TO SOUTHWEST 15 TO 20 MPH. SMOKE DISPERSAL.....INCREASING TO EXCELLENT IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .WEDNESDAY NIGHT...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. LOWS IN THE MID 40S. MAX RH...45-50 PERCENT. SOUTHWEST TO WEST WIND 6 TO 11 MPH UNTIL SUNSET...THEN SOUTH TO SOUTHWEST AT 4 TO 7 MPH. .THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. HIGHS 70-75. WINDS GENERALLY LESS THAN 10 MPH. .FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...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...ROSS REQUESTED BY...RED ROCK OUTLOOK REASON FOR REQUEST...WILDFIRE .TAG 20110823.REDRO.02/RIW