FNUS75 KTFX 172120 FWSTFX SPOT FORECAST FOR SWEATS...HELENA NF USFS NATIONAL WEATHER SERVICE GREAT FALLS MT 320 PM MDT FRI MAY 17 2013 FORECAST IS BASED ON REQUEST TIME OF 1437 MDT ON MAY 17. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...MOIST SOUTHWEST FLOW ALOFT WILL BRING PERIODS OF LIGHT RAIN TO THE HELENA VALLEY AND SURROUNDING MOUNTAINS FRIDAY EVENING AND INTO SATURDAY MORNING. AN ISOLATED THUNDERSTORM IS POSSIBLE DURING THIS FORECAST PERIOD WHICH COULD BRING A BRIEF PERIOD OF MODERATE RAINFALL. RELATIVE HUMIDITIES WILL RECOVER TO AT OR ABOVE 90 PERCENT TONIGHT AND THEN DROP TO NEAR 50 PERCENT SATURDAY AFTERNOON. WINDS WILL INCREASE INTO THE 10 TO 15 MPH RANGE WITH GUSTS NEAR 20 MPH ON SATURDAY. .TONIGHT... SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING...THEN RAIN SHOWERS LIKELY AFTER MIDNIGHT. CWR.................60 PERCENT. MIN TEMPERATURE.....38-43. MAX HUMIDITY........89-94 PERCENT. WIND (20 FT)........NORTH WINDS AROUND 5 MPH SHIFTING TO THE WEST AFTER MIDNIGHT. RIDGE TOP WIND......WEST WINDS AROUND 10 MPH. .SATURDAY... SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY IN THE MORNING...THEN RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. CWR.................40 PERCENT. MAX TEMPERATURE.....50-55. MIN HUMIDITY........51-56 PERCENT. WIND (20 FT)........WEST WINDS 10 TO 15 MPH. RIDGE TOP WIND......WEST WINDS 15 TO 20 MPH. $$ FORECASTER...UTTECH REQUESTED BY...DEANNA THOMPSON TYPE OF REQUEST...WILDFIRE .TAG 20130517.SWEAT.02/TFX