FNUS75 KRIW 132313 FWSRIW SPOT FORECAST FOR FONTENELLE...USFS BTF NATIONAL WEATHER SERVICE RIVERTON WY 513 PM MDT FRI JUL 13 2012 FORECAST IS BASED ON REQUEST TIME OF 1624 MDT ON JULY 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER RIDGE OF HIGH PRESSURE OVER THE ROCKIES WILL CONTINUE TO SHIFT EAST OVER THE WEEKEND. THIS SHIFT WILL ALLOW A MOIST SOUTHERLY FLOW TO INTRUDE FURTHER EAST ACROSS WYOMING ON SATURDAY ALONG WITH SOME EMBEDDED SUB-TROPICAL DISTURBANCES. CONTINUED MOISTENING UP OF THE BOUNDARY LAYER WILL RESULT IN MORE WIDESPREAD THUNDERSTORM COVERAGE SATURDAY AFTERNOON AND BETTER CHANCES OF WETTING RAIN. THE INCREASE IN CLOUDS AND SHOWERS WILL ALSO RESULT IN A COOLING TREND WITH HIGHER RH/S THROUGH THE WEEKEND. CONVECTION WILL BE LESS ORGANIZED ON SUNDAY THOUGH CHANCES OF WETTING RAIN WILL STILL REMAIN RELATIVELY HIGH. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...MEUNIER .SATURDAY... SKY/WEATHER.........CLOUDY (85-95 PERCENT). SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE MORNING...THEN NUMEROUS SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....70-73. MIN HUMIDITY........43-46 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH OR EAST SOUTHEAST THROUGH 1100L. BECOMING SOUTH SOUTHWEST AROUND 10 MPH WITH GUSTS OF 20 TO 25 MPH. STRONGER AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS WITH THESE ERRATIC WINDS BECOMING INCREASINGLY DOMINANT THROUGH THE AFTERNOON. RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH. LAL.................2 UNTIL 1200...THEN 5. CHC OF WETTING RAIN.60 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4400-5400 FT AGL. TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH. SMOKE DISPERSAL.....GOOD TO VERY GOOD (78800-103800 KNOT-FT). .SATURDAY NIGHT... SKY/WEATHER.........CLOUDY (80-90 PERCENT). SCATTERED THUNDERSTORMS IN THE EVENING. SCATTERED RAIN SHOWERS THROUGH THE NIGHT. ISOLATED THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....46-49. MAX HUMIDITY........94-97 PERCENT. 20 FOOT WINDS.......ERRATIC CONVECTIVE WINDS LIKELY TO DOMINATE THROUGH THE EVENING...OTHERWISE SOUTHWEST WINDS AROUND 10 MPH GUSTING TO NEAR 20 MPH EARLY IN THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH OVERNIGHT. RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH. LAL.................4 UNTIL 2400...THEN 2. CHC OF WETTING RAIN.50 PERCENT. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3100-4100 FT AGL. TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH. SMOKE DISPERSAL.....FAIR TO GOOD (44700-73400 KNOT-FT). .SUNDAY... SKY/WEATHER.........CLOUDY (80-90 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS. MAX TEMPERATURE.....AROUND 70. MIN HUMIDITY........44-47 PERCENT. 20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH IN THE LATE MORNING AND AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH. LAL.................4. CHC OF WETTING RAIN.30 PERCENT. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3700-4700 FT AGL. TRANSPORT WINDS.....SOUTHWEST AROUND 25 MPH. SMOKE DISPERSAL.....GOOD TO VERY GOOD (78000-112200 KNOT-FT). .FORECAST DAYS 3 THROUGH 5... .SUNDAY NIGHT...CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS AROUND 40. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH. .TUESDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. .WEDNESDAY...PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID 70S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...MEUNIER REQUESTED BY...CCHURCH REASON FOR REQUEST...WILDFIRE .TAG 20120713.FONTE.01/RIW