FNUS75 KRIW 262352 FWSRIW SPOT FORECAST FOR CRYSTAL...IA TDC NATIONAL WEATHER SERVICE RIVERTON WY 552 PM MDT THU AUG 26 2010 FORECAST IS BASED ON REQUEST TIME OF 1723 MDT ON AUGUST 26. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING... .DISCUSSION... THIS EVENING WILL BE MOSTLY CLEAR WITH SOUTH TO SOUTHWEST WINDS IN THE CRYSTAL CREEK DRAINAGE...AND SOUTH TO SOUTHEAST WINDS IN THE JAGG CREEK DRAINAGE. WINDS ESPECIALLY AT RIDGE TOP WILL CONTINUE TO BE BREEZY THROUGHOUT THE NIGHT...AS A TROUGH BEGINS TO APPROACH WYOMING. CLOUDS WILL INCREASE AFTER MIDNIGHT...WITH A SLIGHT CHANCE OF A LIGHT RAIN SHOWER AFTER 3 AM. HUMIDITY RECOVERY WILL BE POOR TONIGHT...BUT SHOULD INCREASE AS MOISTURE SLOWLY INCREASES INTO THE AREA LATE TONIGHT AND FRIDAY. WINDY SOUTH TO SOUTHWEST WINDS ARE EXPECTED OVER THE FIRE SITE FRIDAY...STRONGER THAN WHAT TODAY. WINDS MORE SOUTHEAST IN THE JAGG CREEK DRAINAGE. RELATIVE HUMIDITY IS EXPECTED TO BE HIGHER AND TEMPERATURES COOLER FRIDAY WITH A CHANCE OF SHOWERS AND THUNDERSTORMS. CHANCES OF PRECIPITATION CONTINUE THROUGH THE WEEKEND...WITH A COLD FRONT MOVING ACROSS THE FIRE SITE SATURDAY NIGHT. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...MURRELL .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (20 PERCENT)...BECOMING MOSTLY CLOUDY AFTER MIDNIGHT (80 PERCENT). ISOLATED RAIN SHOWERS AFTER 3 AM. MIN TEMPERATURE.....VALLEY 7500 FEET 42-46. 8500+ FEET 52-57. MAX HUMIDITY........25-30 PERCENT 8500+ FEET. AROUND 40 PERCENT VALLEY FLOOR. 20 FOOT WINDS.......SOUTH TO SOUTHWEST WINDS 5-10 MPH. GUSTS TO AROUND 15 MPH. RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH...BECOMING SOUTH TO SOUTHWEST 10-15 MPH BY MIDNIGHT. GUSTS TO 25 MPH. LAL.................1. CHC OF WETTING RAIN.LESS THAN 2 PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......8600-9600 FT AGL DECREASING TO 2500 FT AGL BY 2200. TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH...BECOMING SOUTH TO SOUTHWEST 10-15 MPH BY MIDNIGHT. SMOKE DISPERSAL.....EXCELLENT (159100 KNOT-FT) DECREASING TO GOOD (63900 KNOT-FT) AFTER MIDNIGHT. .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (80 PERCENT) THEN BECOMING PARTLY CLOUDY (45 PERCENT) BY AFTERNOON. SCATTERED SHOWERS AND THUNDERSTORMS. MAX TEMPERATURE.....70-75. MIN HUMIDITY........20-25 PERCENT. 20 FOOT WINDS.......SOUTH TO SOUTHWEST WINDS 5-10 MPH INCREASING TO 10 TO 15 MPH IN THE AFTERNOON. GUSTS TO 25 MPH. HIGHER GUSTS AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH. GUSTS TO 35 MPH. LAL.................2 UNTIL 1200...THEN 4. CHC OF WETTING RAIN.6 PERCENT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3000-4000 FT AGL INCREASING TO 7000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 20 TO 30 MPH. SMOKE DISPERSAL.....GOOD (71800 KNOT-FT) INCREASING TO EXCELLENT (175200 KNOT-FT) IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .FRIDAY NIGHT...PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. SOUTHWEST WINDS AROUND 14 MPH. .SATURDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. SOUTH WINDS AROUND 14 MPH. .SUNDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS...THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...PARTLY CLOUDY. CHANCE OF SHOWERS...THUNDERSTORMS AND SLIGHT CHANCE OF SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 50S. WINDS GENERALLY LESS THAN 10 MPH. .TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID 50S. WEST WINDS AROUND 10 MPH. $$ FORECASTER...MURRELL REQUESTED BY...TIDC REASON FOR REQUEST...WILDFIRE .TAG 20100826.CRYST.01/RIW