FNUS75 KGGW 052037 FWSGGW SPOT FORECAST FOR JOHNSON LAKE BLACKLINE...US FISH AND WILDLIFE SERVICE NATIONAL WEATHER SERVICE GLASGOW MT 237 PM MDT THU MAY 5 2011 FORECAST IS BASED ON IGNITION TIME OF 1700 MDT ON MAY 05. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...SUNNY WARM AND DRY CONDITIONS WILL RULE TODAY UNDER WEAK RIDGING ALOFT. LATE TONIGHT THIS RIDGE WILL BE BROKEN DOWN BY AN APPROACHING UPPER TROUGH. THIS TROUGH WILL BRING SOME POTENTIAL FOR SHOWERS INTO FRIDAY AS WELL AS BRING A WIND SHIFT AND AN INCREASE IN WIND VELOCITY FOR FRIDAY. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....68-72. MIN HUMIDITY........17-21 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 9 TO 15 MPH...WITH GUSTS TO 20 MPH. MIXING HEIGHT.......10000 FT AGL. MIXING WINDS........SOUTHWEST AROUND 20 MPH. .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). A CHANCE OF SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....40-45. MAX HUMIDITY........75-80 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 9 TO 15 MPH...WITH GUSTS TO 20 MPH... DECREASING TO AROUND 10 MPH AROUND 8 PM...BECOMING WEST LATE. MIXING HEIGHT.......300 FT AGL. MIXING WINDS........SOUTHWEST AROUND 8 MPH. .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). A CHANCE OF SHOWERS IN THE MORNING...THEN A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....63-68. MIN HUMIDITY........26-31 PERCENT. WIND (20 FT)........WEST WINDS AROUND 10 MPH...BECOMING NORTHWEST AT 15 TO 20 MPH AROUND 900. GUSTS UP TO 30 MPH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. CWR.................20 PERCENT. MIXING HEIGHT.......9900 FT AGL. MIXING WINDS........WEST AROUND 30 MPH. $$ FORECASTER...GILCHRIST REQUESTED BY...JAMES FORSYTHE TYPE OF REQUEST...PRESCRIBED .TAG 20110505.JOHNS.01/GGW