FNUS75 KRIW 211001 FWSRIW SPOT FORECAST FOR WINDMILL...BLM RSD NATIONAL WEATHER SERVICE RIVERTON WY 401 AM MDT TUE SEP 21 2010 FORECAST IS BASED ON REQUEST TIME OF 2056 MDT ON SEPTEMBER 20. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT TUESDAY... .DISCUSSION... VERY LOW RH'S AND GUSTY WINDS WILL RETURN TODAY OVER SOUTHWEST WYOMING. AS A RESULT A RED FLAG WARNING IS ONCE AGAIN IN EFFECT FROM NOON THROUGH 8 PM. SOUTHWEST WINDS WILL BEGIN TO INCREASE BY LATE MORNING...BECOMING QUITE WINDY BY EARLY AFTERNOON. RH'S WILL DROP INTO THE LOWER TEENS TO UPPER SINGLE DIGITS. THE WINDS WILL THEN TAPER IN THE EARLY EVENING. MOISTURE WILL INCREASE FROM THE SOUTH ON WEDNESDAY...WITH A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON AND EVENING. WINDS WILL REMAIN GUSTY...THOUGH RH'S ARE EXPECTED TO BE HIGHER. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...T.BAKER .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....70-74. MIN HUMIDITY........9-12 PERCENT. 20 FOOT WINDS.......VARIABLE 4-8 MPH BECOMING SOUTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND 20 MPH AROUND 1000. INCREASING TO 15 TO 25 GUSTS TO 35 MPH AROUND 1300 RIDGE TOP WINDS.....SOUTH 5-10 MPH INCREASING AND BECOMING SOUTHWEST 15 TO 20 MPH GUSTS TO 30 MPH AROUND 1000. INCREASING TO 20-30 MPH WITH GUSTS TO 40 MPH AROUND 1300. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3000 FT AGL INCREASING TO 9000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 15 MPH INCREASING AND BECOMING SOUTHWEST 30 IN THE AFTERNOON. SMOKE DISPERSAL.....FAIR (45000 KNOT-FT) INCREASING TO EXCELLENT (270000 KNOT-FT) IN THE AFTERNOON. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). MIN TEMPERATURE.....42-46. MAX HUMIDITY........45-50 PERCENT. 20 FOOT WINDS.......SOUTHWEST 15 TO 20 MPH WITH GUSTS TO 35 MPH. DECREASING TO 5 TO 10 MPH IN AROUND 2000. RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH GUSTS TO 40 MPH...DECREASING TO 10 TO 15 MPH WITH GUSTS TO 25 MPH AROUND 2000. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......9000 FT AGL DECREASING TO 2000 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....SOUTHWEST 30 MPH...DECREASING TO 15 MPH BY 2200. SMOKE DISPERSAL.....EXCELLENT-VERY GOOD (270000 TO 135000 KNOT-FT) DECREASING TO POOR (30000 KNOT-FT) AFTER MIDNIGHT. .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT) THEN BECOMING PARTLY CLOUDY (35-45 PERCENT). CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....66-70. MIN HUMIDITY........20-23 PERCENT. 20 FOOT WINDS.......SOUTHWEST WINDS 13 TO 21 MPH. GUSTS UP TO 25 MPH INCREASING TO 35 MPH IN THE AFTERNOON. RIDGE TOP WINDS.....SOUTHWEST AROUND 20 MPH INCREASING TO SOUTHWEST AROUND 30 MPH IN THE AFTERNOON. LAL.................1 THEN 2. CHC OF WETTING RAIN.5 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3000 FT AGL INCREASING TO 9000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 20 MPH...INCREASING TO 30 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....GOOD (60000 KNOT-FT) INCREASING TO EXCELLENT (180000 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .WEDNESDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SHOWERS AND ISOLATED THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 40S. SOUTHWEST WINDS AROUND 16 MPH. .THURSDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S. WEST WINDS AROUND 10 MPH. .FRIDAY...MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 10 MPH. .SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...T.BAKER REQUESTED BY...DUSTIN WIDMER REASON FOR REQUEST...WILDFIRE .TAG 20100920.WINDM.02/RIW