FNUS75 KRIW 251154 FWSRIW SPOT FORECAST FOR NORTH FORK II UNIT R10...USFS SHF NATIONAL WEATHER SERVICE RIVERTON WY 554 AM MDT THU MAR 25 2010 FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON MARCH 25. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A WEATHER DISTURBANCE WILL PASS THROUGH THE AREA LATE THIS AFTERNOON AND EVENING PRODUCING STRONG AND ERRATIC WINDS. THERE WILL BE ISOLATED RAIN SHOWERS LATER THIS AFTERNOON AND WIDELY SCATTERED SNOW SHOWERS THIS EVENING. ANOTHER DISTURBANCE WILL PUSH SOUTHEAST ACROSS THE AREA ON FRIDAY RESULTING IN SCATTERED SNOW SHOWERS...POSSIBLY MIXED WITH RAIN AT TIMES IN THE LOWEST ELEVATIONS ALONG WITH MORE GUSTY WIND. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...SKRBAC .TODAY... SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING MOSTLY CLOUDY (55-65 PERCENT). ISOLATED RAIN SHOWERS AFTER 1500L. MAX TEMPERATURE.....47-51. MIN HUMIDITY........20-25 PERCENT. WIND (20 FT)........DOWNVALLEY 5-10 MPH UNTIL 0900L THEN BECOMING UPSLOPE/UPVALLEY 5-9 MPH...BECOMING WEST AROUND 12 MPH LATE IN THE AFTERNOON. GUSTS UP TO 25 MPH. RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH...INCREASING TO 20 TO 30 MPH BY LATE AFTERNOON. LAL.................1. CWR.................LESS THAN 5 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1800 FT AGL INCREASING TO 4300 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 17 TO 21 MPH. SMOKE DISPERSAL.....POOR INCREASING TO GOOD IN THE AFTERNOON (30000-80000 KNOT-FT). .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). WIDELY SCATTERED SNOW SHOWERS. MIN TEMPERATURE.....26-29. MAX HUMIDITY........63-73 PERCENT. WIND (20 FT)........WEST WINDS 14 TO 22 MPH. GUSTS UP TO 30 MPH INCREASING TO 35 MPH AFTER MIDNIGHT. RIDGE TOP WINDS.....WEST 25-30 MPH INCREASING TO AROUND 40 MPH AFTER MIDNIGHT. LAL.................1. CWR.................5 PERCENT. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1500-2000 FT AGL. TRANSPORT WINDS.....WEST 21 TO 30 MPH. SMOKE DISPERSAL.....POOR TO FAIR (30000-60000 KNOT-FT). .FRIDAY... SKY/WEATHER.........CLOUDY (85-95 PERCENT). SCATTERED SNOW SHOWERS IN THE MORNING...THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....42-45. MIN HUMIDITY........27-30 PERCENT. WIND (20 FT)........WEST WINDS 16 TO 20 MPH. GUSTS UP TO 35 MPH DECREASING TO 30 MPH IN THE LATE MORNING AND AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. RIDGE TOP WINDS.....WEST 25 TO 30 MPH. LAL.................1 UNTIL 1200...THEN 2. CWR.................6 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2300 FT AGL INCREASING TO 4400 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....WEST 26 TO 31 MPH. SMOKE DISPERSAL.....FAIR IN THE MORNING...BECOMING VERY GOOD IN THE AFTERNOON (55000-12500 KNOT-FT). .FORECAST DAYS 3 THROUGH 5... .FRIDAY NIGHT...MOSTLY CLOUDY. SCATTERED SNOW SHOWERS IN THE EVENING...THEN ISOLATED SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 20S. WEST WINDS AROUND 12 MPH. .SATURDAY...PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE UPPER 40S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S. WEST WINDS AROUND 12 MPH. .MONDAY...PARTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S. SOUTHWEST WINDS AROUND 13 MPH. $$ FORECASTER...SKRBAC REQUESTED BY...CLINT DAWSON REASON FOR REQUEST...PRESCRIBED .TAG 20100325.NORTH.01/RIW