FNUS73 KFGF 111349 FWSFGF SPOT FORECAST FOR PEMBINA TRAIL...THE NATURE CONSERVANCY NATIONAL WEATHER SERVICE GRAND FORKS ND 849 AM CDT MON MAY 11 2009 FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON MAY 11. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... LOW PRESSURE DEVELOPING OVER THE NORTHERN ROCKIES WILL GRADUALLY INCREASE THE SOUTH WINDS DURING THE DAY. THROUGH THIS MORNING WINDS WILL BE LIGHT AND SOMEWHAT VARIABLE FAVORING A SOUTH DIRECTION. THERE MAY BE AN EASTERLY COMPONENT TO THE WIND TODAY ESPECIALLY THROUGH NOON. GOOD MIXING AND SUNSHINE SHOULD ALLOW HUMIDITY TO FALL INTO THE MID 20 PERCENT RANGE. 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. ISOLATED SHOWERS OR STORMS ARE LIKELY TO REMAIN AT LEAST A COUNTY OR TWO TO THE SOUTH. ANTICIPATE EXCELLENT SMOKE DISPERSION. SHOWERS AND STORMS...MOSTLY SHOWERS...WILL BECOME MORE LIKELY TONIGHT...ESPECIALLY AFTER MIDNIGHT. GOOD RH RECOVERY DUE TO SOME MEASURABLE PRECIPITATION NEAR 0.15 INCHES. WINDS WILL INCREASE AND BECOME SOUTHEAST TUESDAY. SHOWERS WILL LIKELY CONTINUE WITH AT LEAST ANOTHER 0.25 INCH OF RAINFALL FROM DAWN TO DUSK. RH WILL REMAIN ELEVATED DUE TO CLOUD COVER AND PRECIPITATION. .TODAY... SKY/WEATHER.........PARTLY SUNNY. MAX TEMPERATURE.....64-69. MIN HUMIDITY........24-29 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 10 MPH. MIXING HEIGHT.......300-1300 FT AGL INCREASING TO 8700-10500 FT AGL. MIXING WINDS........SOUTHWEST 16 TO 21 MPH. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........54 49 45 43 44 47 51 55 59 WEATHER COV..... WEATHER TYPE.... TEMP............51 55 58 62 64 65 66 66 66 RH..............59 53 40 33 32 30 29 31 33 20 FT WIND DIR..S S S S S S S S S 20 FT WIND SPD..6 7 8 9 9 9 8 8 7 20 FT WIND GUST.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.....44-49. MAX HUMIDITY........80-85 PERCENT. WIND (20 FT)........SOUTHEAST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. MIXING HEIGHT.......8900 FT AGL DECREASING TO 300-1500 FT AGL. MIXING WINDS........SOUTHEAST 13 TO 22 MPH DECREASING TO AROUND 12 MPH AFTER MIDNIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........63 66 68 71 80 90 WEATHER COV.....S CHC S CHC S CHC CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............65 61 55 52 49 47 RH..............34 44 57 67 73 80 20 FT WIND......S 7 SE 7 SE 8 SE 8 SE 8 SE 9 20 FT WIND GUST.10 10 15 15 15 15 .TUESDAY... SKY/WEATHER.........CLOUDY. SHOWERS AND THUNDERSTORMS LIKELY IN THE MORNING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....64-69. MIN HUMIDITY........56-61 PERCENT. WIND (20 FT)........SOUTHEAST WINDS 8 TO 13 MPH. GUSTS UP TO 20 MPH LATE IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. MIXING HEIGHT.......300-1700 FT AGL INCREASING TO 2600-4000 FT AGL LATE IN THE MORNING...THEN INCREASING TO 4000-5100 FT AGL EARLY IN THE AFTERNOON DECREASING TO 2900 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTH 12 TO 21 MPH INCREASING TO 32 TO 37 MPH. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........97 95 88 86 WEATHER COV.....LIKELY LIKELY CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............46 55 63 66 RH..............85 77 63 61 20 FT WIND......SE 9G15 S 9G15 S 10G15 S 11G20 $$ FORECASTER...EWENS REQUESTED BY...MATT MECKLENBURG TYPE OF REQUEST...PRESCRIBED .TAG 20090511.PEMBI.01/FGF