FNUS73 KFGF 031856 FWSFGF SPOT FORECAST FOR TYMPANUCHUS...MNDNR NATIONAL WEATHER SERVICE GRAND FORKS ND 156 PM CDT THU MAY 3 2012 FORECAST IS BASED ON IGNITION TIME OF 1500 CDT ON MAY 03. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE BUILDING INTO THE FORECAST AREA WILL MAINTAIN A NORTH SURFACE FLOW WITH SPEEDS BETWEEN 10 TO 20 MPH...A FEW GUSTS MAY APPROACH 25 MPH DURING PEAK HEATING. WITH ABUNDANT AMBIENT LOW LEVEL MOISTURE THERE WILL BE A FAIR AMOUNT OF CUMULUS CLOUDS DEVELOPING...LEADING TO A PARTLY SUNNY SKY IN MOST AREAS. DESPITE THE VARIABLE CLOUD COVER THE NORTH WINDS WILL ADVECT IN LOWER DEW-POINT TEMPERATURES ALLOWING AFTERNOON MINIMUM HUMIDITY TO APPROACH THE UPPER 30S. MINIMUM AFTERNOON HUMIDITY IS STILL SOMEWHAT UNCERTAIN AS IT WILL DEPEND HIGHLY ON CLOUDS AND TEMP. SMOKE DISPERSION SHOULD BE EXCELLENT FOR A PERIOD THIS AFTERNOON. THE WIND DIRECTION IS EXPECTED TO REMAIN FROM THE NORTH THROUGH SUNSET. WINDS WILL DIMINISH AND TURN EAST LATER TONIGHT. NO RAIN IS FORECAST OVERNIGHT. THE RELATIVELY WET PERIOD WILL CONTINUE WITH PERIODS OF SHOWERS AND THUNDERSTORMS FRIDAY AFTERNOON THROUGH THE WEEKEND. WINDS WILL DIMINISH AND TURN EAST LATER TONIGHT. NO RAIN IS FORECAST OVERNIGHT. THE RELATIVELY WET PERIOD WILL CONTINUE WITH PERIODS OF SHOWERS AND THUNDERSTORMS FRIDAY AFTERNOON THROUGH THE WEEKEND. .TODAY... SKY/WEATHER.........PARTLY SUNNY. MAX TEMPERATURE.....63-68. MIN HUMIDITY........39-44 PERCENT. WIND (20 FT)........NORTH WINDS 11 TO 16 MPH. MIXING HEIGHT.......300 FT AGL INCREASING TO 5000-6400 FT AGL. MIXING WINDS........NORTH 10 TO 17 MPH INCREASING TO 12 TO 20 MPH IN THE AFTERNOON. TIME (CDT) 2PM 3PM 4PM 5PM 6PM SKY (%).........60 63 65 66 66 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............65 65 65 65 64 RH..............58 54 52 50 48 20 FT WIND DIR..N N N N N 20 FT WIND SPD..16 15 12 11 9 20 FT WIND GUST.20 20 20 15 15 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY BECOMING PARTLY CLOUDY BECOMING MOSTLY CLOUDY. MIN TEMPERATURE.....47-52. MAX HUMIDITY........78-83 PERCENT. WIND (20 FT)........NORTHEAST WINDS 5 TO 8 MPH. MIXING HEIGHT.......3600-5200 FT AGL DECREASING TO 300 FT AGL EARLY IN THE EVENING. MIXING WINDS........EAST 9 TO 16 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........65 57 47 42 51 65 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............63 59 56 53 51 50 RH..............47 61 68 75 80 82 20 FT WIND......N 8 NE 7 NE 6 NE 6 NE 6 NE 6 20 FT WIND GUST.15 10 10 10 10 10 .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. MAX TEMPERATURE.....61-66. MIN HUMIDITY........56-61 PERCENT. WIND (20 FT)........SOUTHEAST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. MIXING HEIGHT.......800-1900 FT AGL INCREASING TO 2900-4100 FT AGL LATE IN THE MORNING. MIXING WINDS........EAST 8 TO 16 MPH INCREASING TO 21 TO 28 MPH IN THE LATE MORNING AND AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........78 85 86 86 WEATHER COV.....CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TSTM COV........S CHC S CHC S CHC S CHC TEMP............49 53 57 61 RH..............83 76 69 61 20 FT WIND......E 7G10 E 8G15 SE 8G15 SE 10G15 $$ FORECASTER...EWENS REQUESTED BY...JASON EKSTEIN TYPE OF REQUEST...PRESCRIBED .TAG 20120503.TYMPA.01/FGF