FNUS73 KFGF 111348 FWSFGF SPOT FORECAST FOR HEADQUARTERS WPA...USFWS-DETROIT LAKES NATIONAL WEATHER SERVICE GRAND FORKS ND 848 AM CDT MON MAY 11 2009 FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON MAY 11. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... STRONG TEMPERATURE ADVECTION WILL KEEP THE CHANCE FOR SHOWERS AND THUNDERSTORMS IN THE AREA TODAY ALTHOUGH THE BEST CHANCE FOR ANY RAIN APPEARS TO BE JUST SOUTH OF YOUR BURN SITE. WINDS WILL BE SOUTHERLY WITH GOOD MIXING AND SOME SUN THIS AFTERNOON. MINIMUM RELATIVE HUMIDITIES WILL HINGE ON CLOUD COVER...IF CLOUDS CLEAR AS EXPECTED THEN MINIMUM RELATIVE HUMIDITIES WILL BE DOWN AROUND 30 PERCENT OTHERWISE IF CLOUDS LINGER THEN EXPECT HIGHER RHS. SMOKE DISPERSION WILL BE GREAT TODAY. NO WINDS SHIFTS ARE EXPECTED BUT GIVEN THE SHOWERS AND CHANCE OF THUNDERSTORMS WINDS COULD BECOME ERRATIC NEAR ANY CONVECTIVE ACTIVITY. .TODAY... SKY/WEATHER.........PARTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....64-69. MIN HUMIDITY........22-27 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 10 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. MIXING HEIGHT.......300-2000 FT AGL INCREASING TO 9300-10500 FT AGL. MIXING WINDS........SOUTH 5 TO 12 MPH INCREASING TO SOUTHWEST 14 TO 23 MPH IN THE LATE MORNING AND AFTERNOON. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........78 75 73 70 68 65 62 60 57 56 55 WEATHER COV..... ISO ISO ISO ISO ISO ISO WEATHER TYPE.... RW RW RW RW RW RW TEMP............43 47 51 55 58 62 64 65 66 66 66 RH..............69 60 56 49 36 30 29 28 27 28 31 20 FT WIND DIR..S S S S S S S S S S S 20 FT WIND SPD..5 5 6 7 8 9 9 9 8 8 7 20 FT WIND GUST. 10 10 10 10 15 15 15 10 10 10 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....45-50. MAX HUMIDITY........80-85 PERCENT. WIND (20 FT)........SOUTH WINDS 7 TO 12 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. MIXING HEIGHT.......9900 FT AGL DECREASING TO 300-1900 FT AGL. MIXING WINDS........SOUTH 23 TO 30 MPH BECOMING SOUTHEAST 12 TO 21 MPH LATE IN THE EVENING...THEN SHIFTING TO THE SOUTH 22 TO 24 MPH EARLY IN THE MORNING. TIME (CDT) 7 PM 10 PM 1 AM 4 AM SKY (%).........55 62 75 83 WEATHER COV.....S CHC S CHC CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............65 58 53 49 RH..............32 49 66 76 20 FT WIND......S 7G10 SE 8G15 SE 9G15 SE 10G15 .TUESDAY... SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS LIKELY IN THE MORNING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....65-70. MIN HUMIDITY........54-59 PERCENT. WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. MIXING HEIGHT.......300-1100 FT AGL INCREASING TO 4800-5700 FT AGL. MIXING WINDS........SOUTH 22 TO 31 MPH INCREASING TO 32 TO 38 MPH IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........90 88 83 77 WEATHER COV.....LIKELY LIKELY CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............47 56 64 67 RH..............85 76 64 59 20 FT WIND......S 11G20 S 12G20 S 14G20 S 14G20 $$ FORECASTER...KAISER REQUESTED BY...HEATH ESTEY TYPE OF REQUEST...PRESCRIBED .TAG 20090511.HEADQ.02/FGF