FNUS75 KRIW 141052 FWSRIW SPOT FORECAST FOR ALPINE LAKE...BIA NATIONAL WEATHER SERVICE RIVERTON WY 452 AM MDT FRI SEP 14 2012 FORECAST IS BASED ON REQUEST TIME OF 2022 MDT ON SEPTEMBER 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... .DISCUSSION...FROM INFORMATION PASSED ALONG THIS SPOT IS FOR THE POSSIBLE BURN OUT IN THE SAGE CREEK BASIN. DRY WEATHER IS IN THE FORECAST FOR TODAY AND SATURDAY WITH LOW RELATIVE HUMIDITY. BASED ON THE HIGH HAINES INDEX...A DECENT MIXING HEIGHT...AND THE EXPECTED WIND TODAY IN THE MIXED LAYER...THE SMOKE SHOULD EASILY DISPERSE ONCE THE BURN GETS GOING. SATURDAY LOOKS SIMILAR BUT THE WIND WILL BE 8 TO 12 MPH STRONGER FROM 10000 FEET THROUGH 18000 FEET MSL. WIND DIRECTION WILL BE SIMILAR BOTH DAYS. THE WIND IS LIKELY TO REMAIN UP SATURDAY NIGHT DUE TO AN APPROACHING WEATHER SYSTEM. ON SUNDAY A WEAK WEATHER SYSTEM AND COLD FRONT MOVES THROUGH THE FIRE AREA SUNDAY AFTERNOON BETWEEN 1900 AND 2100. ISOLATED SHOWERS OR STORMS ARE POSSIBLE WITH GUSTY WIND AND ONLY LIGHT RAINFALL EXPECTED...ONE TENTH OF AN INCH OR LESS. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...AR .TODAY... SKY/WEATHER.........MOSTLY SUNNY. SOME HIGH LEVEL CLOUDS ONLY. MAX TEMPERATURE.....60-64. MIN HUMIDITY........18-23 PERCENT. 20 FOOT WINDS.......WEST TO NORTHWEST AT 5 TO 10 MPH UNTIL 1200. WEST AT 7 TO 12 MPH AFTER 1200. RIDGE TOP WINDS AT 10000-11000 FT...WEST TO NORTHWEST AT 7 TO 12 MPH WITH GUSTS TO 15 MPH UNTIL 1200. WEST AT 13 TO 17 MPH WITH GUSTS AROUND 20 MPH AFTER 1200. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......INCREASING TO 6000-7000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST TO NORTHWEST AT 10 TO 15 MPH UNTIL 1200. WEST AROUND 20 MPH AFTER 1200. SMOKE DISPERSAL.....FAIR...BECOMING GOOD BY 1200...INCREASING TO VERY GOOD AROUND 1400. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....45-49. MAX HUMIDITY........24-28 PERCENT. 20 FOOT WINDS.......WEST WIND AT 7 TO 12 MPH UNTIL SUNSET. THEN WEST AT 6 TO 10 MPH AFTER SUNSET. RIDGE TOP WINDS AT 10000-11000 FT...WEST AT 12 TO 17 MPH WITH GUSTS AROUND 20 MPH ALL NIGHT. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......DECREASING TO 2000-3000 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST AT 15 TO 20 MPH. SMOKE DISPERSAL.....GOOD...DECREASING TO FAIR AFTER MIDNIGHT. .SATURDAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....61-65. MIN HUMIDITY........17-22 PERCENT. 20 FOOT WINDS.......WEST AT 6 TO 10 MPH UNTIL 1200. WEST AT 8 TO 13 MPH AFTER 1200 WITH GUSTS AROUND 15 MPH. RIDGE TOP WINDS AT 10000-11000 FT...WEST AT 12 TO 17 MPH WITH GUSTS WITH GUSTS AROUND 20 MPH UNTIL 1200. WEST AT 15 TO 20 MPH WITH GUSTS AROUND 25 MPH AFTER 1200. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......INCREASING TO 7000-8000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 15 TO 20 MPH UNTIL 1200. WEST 20 TO 25 MPH AFTER 1200. SMOKE DISPERSAL.....INCREASING TO VERY GOOD BY 1200...THEN BECOMING EXCELLENT AROUND 1400. .FORECAST DAYS 3 THROUGH 5... .SATURDAY NIGHT...MOSTLY CLEAR. LOWS IN THE 40S. WEST TO NORTHWEST WINDS AROUND 15 MPH. .SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF AFTERNOON AND EVENING SHOWERS...ISOLATED THUNDERSTORMS. HIGHS IN THE 50S. NORTHWEST WINDS AROUND 15 MPH. .MONDAY...MOSTLY CLEAR. LOWS IN THE 30S. HIGHS IN THE 50S. WINDS GENERALLY LESS THAN 10 MPH. .TUESDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 60. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...ROSS REQUESTED BY...MIKE HOSS HOSTETLER REASON FOR REQUEST...WILDFIRE .TAG 20120913.ALPIN.02/RIW