FNUS75 KRIW 050233 FWSRIW SPOT FORECAST FOR PILGRIM CREEK...NPS GTP NATIONAL WEATHER SERVICE RIVERTON WY 833 PM MDT WED AUG 4 2010 FORECAST IS BASED ON REQUEST TIME OF 1955 MDT ON AUGUST 04. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL OCCUR WELL SOUTH OF THE FIRE THROUGH 2130. FROM 2130 TO MIDNIGHT IT IS POSSIBLE FOR AN ISOLATED THUNDERSTORM TO FORM IN THE VICINITY OF THE FIRE BUT THERE ARE NO DIRECT THREATS TO THE FIRE FROM THUNDERSTORMS AT THIS TIME. DRY CONDITIONS WILL THEN PREVAIL OVERNIGHT...AND INTO THURSDAY MORNING. TEMPERATURES ACROSS THE FIRE WILL BE RELATIVELY UNCHANGED. ANOTHER ROUND OF SCATTERED SHOWERS AND THUNDERSTORMS WILL BE FOUND ACROSS THE AREA THURSDAY AFTERNOON. HAZARDS WITH THUNDERSTORM ACTIVITY WILL BE GUSTY WIND TO 35 MPH...PERIODS OF HEAVY RAINFALL AND SMALL HAIL. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... FORECASTER...LIPSON .REST OF TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT). ISOLATED SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING...MAINLY WELL SOUTH OF THE FIRE. MIN TEMPERATURE.....43-46. MAX HUMIDITY........73-76 PERCENT. WIND (20 FT)........SOUTHWEST 3 TO 5 MPH THROUGH 2100. THEN DOWNSLOPE FROM THE NORTHEAST AT 3 TO 5 MPH AFTER 2100. WINDS BECOMING SOUTHEAST AT 4 TO 7 MPH AFTER MIDNIGHT. GUSTY AND ERRATIC WINDS EXPECTED NEAR ANY THUNDERSTORMS EARLY THIS EVENING. EVENI RIDGE TOP WINDS.....WEST AROUND 10 MPH SHIFTING TO THE NORTH LATE IN THE EVENING...THEN SHIFTING TO THE EAST AFTER MIDNIGHT. LAL.................2 UNTIL 2400...THEN 1. CWR.................3 PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4600-5600 FT AGL DECREASING TO 1300 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE NORTH AROUND 8 MPH LATE IN THE EVENING...THEN SHIFTING TO THE EAST 9 TO 10 MPH AFTER MIDNIGHT. SMOKE DISPERSAL.....POOR (8000-37600 KNOT-FT). .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT) THEN BECOMING PARTLY CLOUDY (45-55 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....84. MIN HUMIDITY........21 PERCENT. WIND (20 FT)........SOUTHEAST 3 TO 5 MPH IN THE MORNING. WINDS BECOMING SOUTHWEST 5 TO 9 MPH BY 1100. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE SOUTHWEST IN THE AFTERNOON. LAL.................1 UNTIL 1200...THEN 4. CWR.................5 PERCENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......3000-4000 FT AGL INCREASING TO 6800-7800 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHEAST 7 TO 8 MPH SHIFTING TO THE SOUTHWEST 8 TO 9 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO FAIR (20300-52800 KNOT-FT). .FORECAST DAYS 3 THROUGH 5... .THURSDAY NIGHT...PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN ISOLATED SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE MID 40S. WINDS GENERALLY LESS THAN 10 MPH. .FRIDAY...PARTLY CLOUDY WITH SCATTERED SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 70S. WINDS GENERALLY LESS THAN 10 MPH. .SATURDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 70S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 70S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 70S. WINDS GENERALLY LESS THAN 10 MPH. $$ FORECASTER...LIPSON REQUESTED BY...WEIRSMA REASON FOR REQUEST...WILDFIRE .TAG 20100804.PILGR.01/RIW