FNUS75 KVEF 280350 FWSVEF SPOT FORECAST FOR KNIFE...COLOR COUNTY DISPATCH NATIONAL WEATHER SERVICE LAS VEGAS NV 850 PM PDT SAT AUG 27 2011 FORECAST IS BASED ON IGNITION TIME OF 2055 PDT ON AUGUST 27. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A MOIST AND UNSTABLE AIR MASS WILL REMAIN IN PLACE THROUGH THE REST OF THE WEEKEND FOR A THREAT OF ISOLATED SHOWERS AND THUNDERSTORMS WITH THE MAIN THREAT OF THUNDERSTORMS SUNDAY AFTERNOON AND EARLY EVENING. EXCESSIVELY HOT AFTERNOON TEMPERATURES ARE EXPECTED THROUGH MONDAY BEFORE TEMPERATURES DECREASE SLIGHTLY THE REST OF THE WEEK. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY. MIN TEMPERATURE.....71-76. MAX HUMIDITY........55-60 PERCENT. 20 FT-10 MIN AVG..SOUTHWEST WINDS 6 TO 10 MPH IN THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY 2 TO 5 MPH. 10K FT WIND.......WEST 5 TO 10 MPH. CWR (>= 0.10 IN)....0 PERCENT. LAL.................1. MIXING HEIGHT.......9500 FT AGL. TRANSPORT WINDS.....SOUTHWEST 4 TO 5 KNOTS SHIFTING TO THE SOUTHEAST 5 TO 6 KNOTS AFTER MIDNIGHT. VENTILATION.........GOOD. .SUNDAY... SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS IN THE LATE MORNING AND AFTERNOON. MAX TEMPERATURE.....86-91. MIN HUMIDITY........18-23 PERCENT. 20 FT-10 MIN AVG..UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING SOUTHWEST AROUND 6 MPH IN THE AFTERNOON. 10K FT WIND.......WEST 4 TO 10 MPH. CWR (>= 0.10 IN)....20 PERCENT. LAL.................2. MIXING HEIGHT.......16000 FT AGL. TRANSPORT WINDS.....EAST 4 TO 5 KNOTS IN THE MORNING BECOMING LIGHT. VENTILATION.........GOOD. $$ FORECASTER...GORELOW REQUESTED BY...COLOR COUNTY DISPATCH TYPE OF REQUEST...PRESCRIBED .TAG 20110827.KNIFE.01/VEF