FNUS75 KRIW 231548 FWSRIW SPOT FORECAST FOR BLACK MOUNTAIN...IA CDC NATIONAL WEATHER SERVICE RIVERTON WY 948 AM MDT WED MAY 23 2012 FORECAST IS BASED ON REQUEST TIME OF 0923 MDT ON MAY 23. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SATELLITE INDICATES INCREASING CLOUD COVER MOVING FROM WESTERN WYOMING THIS MORNING...WHICH SHOULD MOVE OVER THE FIRE DURING THE LATE MORNING HOURS. A TROUGH OF LOW PRESSURE CONTINUES TO DIG SOUTH THROUGH THE AREA TODAY...WHICH WILL RESULT IN ISOLATED SHOWERS LATE THIS MORNING...WITH THUNDERSTORMS POSSIBLE THIS AFTERNOON. LIGHTNING...GUSTY AND ERRATIC WIND...AND POTENTIALLY SMALL HAIL MAY ACCOMPANY ANY THUNDERSTORM DEVELOPMENT. PERIODS OF GUSTY WIND EXPECTED OVER THE FIRE THROUGH THE DAY. THIS TROUGH WILL ALSO BE RESPONSIBLE FOR COOLER TEMPERATURES THIS EVENING AND OVERNIGHT...WHICH WILL PROMOTE THE DEVELOPMENT FOR SNOW SHOWERS OVERNIGHT. ACCUMULATION FROM THESE SHOWERS IS EXPECTED TO BE LIGHT WITH LESS THAN AN INCH OF SNOWFALL EXPECTED. ISOLATED TO SCATTERED SHOWERS WILL CONTINUE THROUGH THURSDAY...WITH SNOWFALL CONVERTING TO RAIN DURING THE MORNING HOURS. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...BRANHAM .TODAY... SKY/WEATHER.........BECOMING PARTLY CLOUDY (35-50 PERCENT) BY 1100. THEN BECOMING MOSTLY CLOUDY (60-70 PERCENT) BY 1300. ISOLATED TO SCATTERED RAIN SHOWERS AND THUNDERSTORMS AFTER 1100. MAX TEMPERATURE.....42-45. MIN HUMIDITY........DECREASING TO 26-29 PERCENT BY 1200. 20 FOOT WINDS.......WEST WIND AROUND 10 MPH INCREASING THROUGH THE MORNING...BECOMING BREEZY WITH WINDS 20 TO 25 MPH BY 1100. GUSTS UP TO 40 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....WEST 30 TO 35 MPH. LAL.................1 UNTIL 1100...THEN 2. CHC OF WETTING RAIN.4 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........BECOMING PARTLY CLOUDY (50-60 PERCENT) BY 2000. ISOLATED TO SCATTERED SNOW SHOWERS...ESPECIALLY AFTER 1900. MIN TEMPERATURE.....25-28. MAX HUMIDITY........70-73 PERCENT. 20 FOOT WINDS.......NORTHWEST WINDS 12 TO 15 MPH IN THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH AFTER 1900. GUSTS UP TO 20 MPH THROUGH 1900. RIDGE TOP WINDS.....WEST 15 TO 20 MPH. LAL.................1. CHC OF WETTING RAIN.7 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .THURSDAY... SKY/WEATHER.........BECOMING CLOUDY (75-85 PERCENT) BY 0700. SCATTERED SNOW SHOWERS THROUGH 1100...THEN RAIN SHOWERS LIKELY WITH ISOLATED THUNDERSTORMS. MAX TEMPERATURE.....39-42. MIN HUMIDITY........35-38 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST SOUTHWEST AT 8 TO 12 MPH AFTER 1300. GUSTS UP TO 18 MPH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....WEST NORTHWEST AT 8 TO 12 MPH...BECOMING SOUTHWEST AT 10 TO 15 MPH AFTER 1400. LAL.................1 UNTIL 1100...THEN 2. CHC OF WETTING RAIN.20 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .THURSDAY NIGHT...SNOW SHOWERS LIKELY AND ISOLATED THUNDERSTORMS IN THE EVENING...THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT. LOWS IN THE MID 20S. WINDS GENERALLY LESS THAN 10 MPH. .FRIDAY...SHOWERS...SNOW SHOWERS AND ISOLATED THUNDERSTORMS. LOWS AROUND 30. HIGHS IN THE UPPER 30S. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...WARMER. MOSTLY CLOUDY WITH SHOWERS LIKELY WITH POSSIBLE SNOW SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 50S. SOUTH WINDS AROUND 15 MPH. .SUNDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS...SNOW SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 40S. WEST WINDS AROUND 17 MPH. $$ FORECASTER...BRANHAM REQUESTED BY...BRETT HELLER REASON FOR REQUEST...WILDFIRE .TAG 20120523.BLACK.01/RIW