FNUS75 KRIW 201404 FWSRIW SPOT FORECAST FOR WINDMILL...BLM RAD NATIONAL WEATHER SERVICE RIVERTON WY 804 AM MDT MON SEP 20 2010 FORECAST IS BASED ON REQUEST TIME OF 0723 MDT ON SEPTEMBER 20. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING... .DISCUSSION... DRY CONDITIONS WILL CONTINUE OVER THE FIRE AREA TODAY. A LULL IN WIND THIS MORNING WILL END EARLY THIS AFTERNOON AS WIND INCREASES. WHILE TEMPERATURES WILL BE COOLER TODAY...RH VALUES WILL APPROACH CRITICAL LEVELS THIS AFTERNOON. DRY CONDITIONS WILL CONTINUE THROUGH TUESDAY WITH BREEZY TO WINDY CONDITIONS IN THE AFTERNOON. MOISTURE WILL INCREASE ON WEDNESDAY WITH A SLIGHT CHANCE OF RAIN IN THE AFTERNOON. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...BERC .TODAY... SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT). MAX TEMPERATURE.....64-67. MIN HUMIDITY........13-17 PERCENT. 20 FOOT WINDS.......WEST NORTHWEST WINDS 5 TO 10 MPH BECOMING WESTERLY AT 14 TO 21 MPH WITH GUSTS TO AROUND 35 MPH AFTER 1500. RIDGE TOP WINDS.....WEST AROUND 20 MPH DECREASING TO 10 TO 15 MPH IN THE LATE MORNING AND INCREASING TO 20 TO 25 MPH AFTER 1500. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2800-3800 FT AGL INCREASING TO 7600-8600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 17 TO 25 MPH. SMOKE DISPERSAL.....FAIR (55200 KNOT-FT) INCREASING TO VERY GOOD (128300 KNOT-FT) IN THE AFTERNOON. .TONIGHT... SKY/WEATHER.........CLEAR (5-15 PERCENT). MIN TEMPERATURE.....AROUND 40. MAX HUMIDITY........51-61 PERCENT. 20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 19 MPH WITH GUSTS TO AROUND 30 MPH. RIDGE TOP WINDS.....WEST AROUND 15 MPH SHIFTING TO THE SOUTHWEST 5 TO 10 MPH AFTER MIDNIGHT. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4500-5500 FT AGL DECREASING TO 200 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST 16 TO 22 MPH BECOMING SOUTHWEST 7 TO 8 MPH AFTER MIDNIGHT. SMOKE DISPERSAL.....GOOD (72800 KNOT-FT) DECREASING TO POOR (2000 KNOT-FT) AFTER MIDNIGHT. .TUESDAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....70-73. MIN HUMIDITY........9-12 PERCENT. 20 FOOT WINDS.......SOUTH WINDS 11 TO 12 MPH WITH HIGHER GUSTS EARLY IN THE MORNING BECOMING UPSLOPE/UPVALLEY 5-9 MPH...THEN BECOMING SOUTHWEST 17 TO 20 MPH WITH GUSTS TO AROUND 35 MPH IN THE AFTERNOON. RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH INCREASING TO 20 TO 25 MPH IN THE AFTERNOON. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3800-4800 FT AGL INCREASING TO 8100-8600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH AROUND 9 MPH INCREASING TO SOUTHWEST 26 TO 28 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....GOOD (99900 KNOT-FT) INCREASING TO EXCELLENT (193000 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .TUESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTH WINDS AROUND 14 MPH. .WEDNESDAY...MOSTLY CLEAR. ISOLATED SHOWERS. LOWS AROUND 40. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 18 MPH. .THURSDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. SOUTHWEST WINDS AROUND 10 MPH. .FRIDAY...MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 10 MPH. $$ FORECASTER...BERC REQUESTED BY...DUSTIN WIDMER REASON FOR REQUEST...WILDFIRE .TAG 20100920.WINDM.01/RIW