FNUS75 KRIW 110141 FWSRIW SPOT FORECAST FOR DEADLINE...BLM RAD NATIONAL WEATHER SERVICE RIVERTON WY 741 PM MDT FRI AUG 10 2012 FORECAST IS BASED ON REQUEST TIME OF 1857 MDT ON AUGUST 10. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING... .DISCUSSION... A CLUSTER OF SHOWERS AND THUNDERSTORMS OVER SOUTHEAST IDAHO AND NORTHERN UTAH WILL PUSH ACROSS THE FIRE SITE BETWEEN 2100L AND 0200L TONIGHT. THESE SHOWERS AND STORMS ARE OCCURRING IN CONJUNCTION WITH A WEATHER SYSTEM MOVING ACROSS IDAHO TONIGHT. LIGHT RAIN SHOWERS WILL LINGER THROUGH THE NIGHT AFTER THIS CLUSTER OF SHOWERS AND STORMS PASSES. DRIER AIR WILL GRADUALLY SPREAD ACROSS WESTERN WYOMING DURING THE DAY ON SATURDAY. THIS WILL ALLOW FOR DRIER CONDITIONS...BUT AFTERNOON WEST-NORTHWEST WIND WILL BE PERSISTENT INTO EARLY SATURDAY EVENING. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...JONES .TONIGHT... SKY/WEATHER.........CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS UNTIL AROUND 2100L...THEN SCATTERED RAIN SHOWERS AND THUNDERSTORMS UNTIL 0200L...THEN ISOLATED RAIN SHOWERS. MIN TEMPERATURE.....46-49. MAX HUMIDITY........78-82 PERCENT. 20 FOOT WINDS.......WEST-SOUTHWEST WIND 8 TO 12 MPH WITH GUSTS TO AROUND 20 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS WITH PEAK WINDS OF 30 TO 40 MPH POSSIBLE. AFTER 0200L... BECOMING DOWNSLOPE/DOWNVALLEY 4 TO 7 MPH. RIDGE TOP WINDS.....WEST AROUND 15 MPH. LAL.................2 UNTIL 2100L...THEN LAL 4 UNTIL 0200L...THEN LAL 1. CHC OF WETTING RAIN.30 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......5000 FT AGL UNTIL AROUND MIDNIGHT...THEN GRADUALLY DECREASING TO LESS THAN 2000 FT AGL BY 0200L. TRANSPORT WINDS.....WEST AROUND 20 MPH UNTIL 0200L...THEN BECOMING DOWNSLOPE/DOWNVALLEY AROUND 10 MPH. SMOKE DISPERSAL.....GOOD UNTIL 0200L...THEN BECOMING POOR. .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY (70 PERCENT) WITH A FEW SPRINKLES UNTIL 1000L...THEN CLOUD COVER GRADUALLY DECREASING THROUGH THE DAY. EXPECT PARTLY CLOUDY (30-40 PERCENT) BY 1500L. MAX TEMPERATURE.....72-75. MIN HUMIDITY........19-22 PERCENT. 20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH UNTIL 1000L... THEN BECOMING UPSLOPE/UPVALLEY 5 TO 9 MPH. BETWEEN 1200L AND 1300L...WIND BECOMING WEST-NORTHWEST 10 TO 15 MPH WITH GUSTS TO 25 MPH. RIDGE TOP WINDS.....WEST 15 TO 20 MPH...INCREASING TO WEST-NORTHWEST 20 TO 25 MPH AFTER 1200L. LAL.................1. CHC OF WETTING RAIN.LESS THAN 5 PERCENT. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......LESS THAN 2000 FT AGL UNTIL 1000L...THEN GRADUALLY INCREASING TO AROUND 8000 FT AGL BY 1400L. TRANSPORT WINDS.....DOWNSLOPE/DOWNVALLEY 4 TO 8 MPH UNTIL 1000L... THEN BECOMING WEST-NORTHWEST AROUND 20 MPH BY 1200L. SMOKE DISPERSAL.....POOR UNTIL 1000L...THEN BECOMING EXCELLENT BY 1400L. .FORECAST DAYS 3 THROUGH 5... .SATURDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 40S. EVENING NORTHWEST WIND 10 TO 15 MPH. .SUNDAY...PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE MID 70S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...PARTLY CLOUDY WITH WIDELY SCATTERED LATE AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S. WINDS GENERALLY LESS THAN 10 MPH. .TUESDAY...PARTLY CLOUDY WITH WIDELY SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. .WEDNESDAY...PARTLY CLOUDY WITH WIDELY SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...JONES REQUESTED BY...LOCKWOOD REASON FOR REQUEST...WILDFIRE .TAG 20120810.DEADL.01/RIW