FNUS75 KRIW 030916 FWSRIW SPOT FORECAST FOR LOWER GROS VENTRE RX...IA CDC NATIONAL WEATHER SERVICE RIVERTON WY 316 AM MDT SUN OCT 3 2010 FORECAST IS BASED ON IGNITION TIME OF 1800 MDT ON OCTOBER 02. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... THIS WILL BE THE LAST DAY FOR THE EXTREMELY WARM...RECORD BREAKING HEAT THAT HAS OCCURRED OVER THE PAST COUPLE OF WEEKS. WINDS WILL BE LIGHT AND MAINLY TERRAIN DRIVEN TODAY...WITH SIMILAR TEMPERATURES AND RELATIVE HUMIDITY OVER THE FIRE SITE TO WHAT OCCURRED YESTERDAY. A PACIFIC STORM SYSTEM WILL DIG INTO THE SOUTHWEST U.S. TODAY AND MONDAY. THIS SYSTEM WILL BRING IN COOLER TEMPERATURES AND HIGHER RELATIVE HUMIDITY MONDAY. IN ADDITION...ISOLATED SHOWERS AND POSSIBLY A THUNDERSTORM COULD ALSO AFFECT THE FIRE SITE MONDAY. SOUTHERLY WINDS WILL ALSO PICK UP MONDAY. UNSETTLED WEATHER WITH TEMPERATURES NEAR SEASONAL AVERAGES WILL PREVAIL THIS UPCOMING WEEK. HOWEVER...SHOWERS ARE EXPECTED TO REMAIN SPOTTY AND LIGHT WITH SLIM CHANCES OF RECEIVING A WETTING RAIN. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...MURRELL .TODAY... SKY/WEATHER.........MOSTLY SUNNY (15 PERCENT). MAX TEMPERATURE.....74-78. MIN HUMIDITY........15-20 PERCENT. 20 FOOT WINDS.......EAST SOUTHEAST 3-6 MPH...BECOMING UPSLOPE/UPVALLEY 4-9 MPH BY 1100. GUSTS TO 12 MPH IN THE AFTERNOON. RIDGE TOP WINDS.....SOUTHEAST AROUND 5 MPH...BECOMING SOUTHWEST 4-9 MPH BETWEEN NOON AND 1400. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2500 FT AGL INCREASING TO 10000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....LIGHT SOUTH...BECOMING SOUTHWEST AROUND 10 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO FAIR (19400-46300 KNOT-FT). .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (25-35 PERCENT)...BECOMING MOSTLY CLOUDY (75 PERCENT) AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 45. MAX HUMIDITY........50-55 PERCENT. 20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3-6 MPH. RIDGE TOP WINDS.....LIGHT SOUTHWEST...BECOMING SOUTH 5 TO 10 MPH BY MIDNIGHT. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6600 FT AGL DECREASING TO 800 FT AGL BY 2000. TRANSPORT WINDS.....LIGHT SOUTHWEST...BECOMING SOUTH 5 TO 10 MPH BY MIDNIGHT. SMOKE DISPERSAL.....POOR (6200-32600 KNOT-FT). .MONDAY... SKY/WEATHER.........MOSTLY CLOUDY (75 PERCENT). ISOLATED RAIN SHOWERS THROUGH THE DAY. ISOLATED THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....58-63. MIN HUMIDITY........35-40 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH BECOMING SOUTHWEST AROUND 10 MPH BETWEEN NOON AND 1400. GUSTS TO AROUND 20 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....SOUTH AROUND 10 MPH...BECOMING SOUTHWEST AROUND 15 MPH IN THE AFTERNOON. LAL.................1 UNTIL 1200...THEN 2. CHC OF WETTING RAIN.5 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1500 FT AGL INCREASING TO 5500 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 10 TO 15 MPH SHIFTING TO THE SOUTHWEST AROUND 15 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....POOR (32000 KNOT-FT) INCREASING TO GOOD (94800 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .MONDAY NIGHT...MOSTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. WINDS GENERALLY LESS THAN 10 MPH. .TUESDAY...PARTLY CLOUDY. ISOLATED SHOWERS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 50S. WINDS GENERALLY LESS THAN 10 MPH. .WEDNESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH. .THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS AROUND 40. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...MURRELL REQUESTED BY...BURN BOSS REASON FOR REQUEST...PRESCRIBED .TAG 20101002.LOWER.01/RIW