FNUS75 KRIW 141656 FWSRIW SPOT FORECAST FOR FONTENELLE...IA TDC NATIONAL WEATHER SERVICE RIVERTON WY 1056 AM MDT TUE AUG 14 2012 FORECAST IS BASED ON REQUEST TIME OF 1028 MDT ON AUGUST 14. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A WARM AND DRY DAY IN STORE TODAY ACROSS THE FIRE. NORTHWEST FLOW CONTINUES DUE TO AN AREA OF HIGH PRESSURE OVER THE WESTERN THIRD OF THE UNITED STATES. A DISTURBANCE EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST THIS AFTERNOON WILL HELP TO INCREASE THE PRESSURE GRADIENT SLIGHTLY ACROSS THE FIRE...RESULTING IN SLIGHTLY INCREASED WIND THIS AFTERNOON. AS THIS DISTURBANCE CONTINUES ITS SOUTHEASTWARD PROGRESSION... WILL ADD MOISTURE AND INSTABILITY DURING THE AFTERNOON. CONSEQUENTLY...ISOLATED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO RETURN TO THE FIRE WEDNESDAY MORNING AND AFTERNOON. LIGHTNING AND GUSTY OUTFLOW WINDS REMAIN THE PRIMARY THREATS WITH ANY THUNDERSTORM ACTIVITY. TEMPERATURES WILL BE MINIMALLY IMPACTED BY THE DISTURBANCE...WITH SIMILAR VALUES EXPECTED WEDNESDAY AS WHAT IS ANTICIPATED TODAY. THE PASSAGE OF THIS SYSTEM WILL THEN BRING A RETURN TO THE DRY NORTHWEST FLOW FOR THE LATER PORTION OF THE WEEK. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...BRANHAM .TODAY... SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT). MAX TEMPERATURE.....76-80 BELOW 9000 FT...72-76 ABOVE 9000 FT. MIN HUMIDITY........15-18 PERCENT BELOW 9000 F...18-22 PERCENT ABOVE 9000 FT. 20 FOOT WINDS.......WEST TO SOUTHWEST WINDS 10 TO 14 MPH. WIND GUSTS WILL CONTINUE TO INCREASE THIS MORNING...WITH GUSTS TO AROUND 25 MPH POSSIBLE AFTER 1200L. RIDGE TOP WINDS.....WEST 15 TO 20 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6300-8600 FT AGL INCREASING TO 9600-10100 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 16 TO 22 MPH. SMOKE DISPERSAL.....INCREASING EXCELLENT (152000-180000) BY 1400L. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). MIN TEMPERATURE.....43-46 BELOW 9000 FT...48-52 ABOVE 9000 FT. MAX HUMIDITY........64-74 PERCENT ALL LEVELS. 20 FOOT WINDS.......WEST WINDS 9 TO 14 MPH WITH GUSTS TO AROUND 25 MPH. RIDGE TOP WINDS.....WEST 15 TO 20 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......8300-9300 FT AGL DECREASING TO 6200-7200 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST 18 TO 22 MPH. SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT (113100-158600 KNOT-FT). .WEDNESDAY... SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). SLIGHT CHANCE OF RAIN SHOWERS AND ISOLATED THUNDERSTORMS AFTER 1000. MAX TEMPERATURE.....76-79 BELOW 9000 FT...70-73 ABOVE 9000 FT. MIN HUMIDITY........21-24 PERCENT BELOW 9000 FT...27-30 PERCENT ABOVE 9000 FT. 20 FOOT WINDS.......WEST WINDS 10 TO 16 MPH WITH GUSTS TO AROUND 30 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....WEST 15 TO 20 MPH. LAL.................2. CHC OF WETTING RAIN.LESS THAN 5 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......6500-7500 FT AGL INCREASING TO 9000-10000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 17 TO 24 MPH. SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT (117600-165500 KNOT-FT). .FORECAST DAYS 3 THROUGH 5... .WEDNESDAY NIGHT...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND ISOLATED THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER 30S. WINDS GENERALLY LESS THAN 10 MPH. .THURSDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. .FRIDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 70. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...BRANHAM REQUESTED BY...USFS REASON FOR REQUEST...WILDFIRE .TAG 20120814.FONTE.01/RIW