FNUS75 KVEF 171951 FWSVEF SPOT FORECAST FOR MIDDLE FORK RX...CCIFC NATIONAL WEATHER SERVICE LAS VEGAS NV 1251 PM PDT THU SEP 17 2009 FORECAST IS BASED ON IGNITION TIME OF 1245 ON SEPTEMBER 17. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN AREA OF LOW PRESSURE WILL FROM EASTERN ARIZONA INTO NEW MEXICO TONIGHT. NORTHEAST FLOW ALOFT TONIGHT WILL BECOME MORE EASTERLY AND PROVIDE A MODEST INCREASE IN MID LEVEL MOISTURE ON FRIDAY. THIS WILL BE SUFFICIENT TO PRODUCE ISOLATED THUNDERSTORMS ACROSS NORTHWEST ARIZONA. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY. MIN TEMPERATURE.....50-55. MAX HUMIDITY........59-64 PERCENT. 20 FT-10 MIN AVG..NORTHEAST WINDS 3 TO 7 MPH. 10K FT WIND.......NORTHEAST 5 TO 10 MPH. CWR (>= 0.10 IN)....0 PERCENT. LAL.................1. MIXING HEIGHT.......6500 FT AGL. TRANSPORT WINDS.....NORTHEAST 6 TO 10 KNOTS. .FRIDAY... SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE LATE MORNING AND AFTERNOON. MAX TEMPERATURE.....67-72. MIN HUMIDITY........25-30 PERCENT. 20 FT-10 MIN AVG..LIGHT AND VARIABLE...BECOMING UPSLOPE AT 3 TO 7 MPH. WIND GUSTS TO 35 MPH POSSIBLE NEAR ANY THUNDERSTORM. 10K FT WIND.......NORTHEAST 5 TO 10 MPH. CWR (>= 0.10 IN)....10 PERCENT. LAL.................2. MIXING HEIGHT.......10500 FT AGL. TRANSPORT WINDS.....EAST 5 TO 10 KNOTS. $$ FORECASTER...CZYZYK REQUESTED BY...WILLIAMS TYPE OF REQUEST...PRESCRIBED .TAG 20090917.MIDDL.02/VEF