FNUS73 KFGF 301359 FWSFGF SPOT FORECAST FOR NORRISSLASH...MNDNR NATIONAL WEATHER SERVICE GRAND FORKS ND 859 AM CDT THU SEP 30 2010 FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON SEPTEMBER 30. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE OVER WESTERN NORTH DAKOTA WILL GENERATE A WESTERLY FLOW TODAY. A STRONG EARLY MORNING INVERSION WILL KEEP WINDS LIGHT TO START BEFORE BREAKING BY MID MORNING. WITH A MODERATE MID LEVEL FLOW AND DECREASING STABILITY EXPECT WINDS TO BECOME A BIT GUSTY BY LATE MORNING. A UNIDIRECTIONAL FLOW WILL KEEP WINDS FAIRLY STEADY FROM THE NORTHWEST. VERY DRY AIR ALOFT WILL MIX DOWN WITH AFTERNOON HUMIDITY IN THE LOW TO MID 40 PERCENT RANGE. WE WILL HAVE TO MONITOR THE RH AS THE MORNING PROGRESSES AND MAY NEED TO LOWER AFTERNOON RH DEPENDING ON THE MIXING LEVEL. GOOD DISPERSION THIS MORNING WILL BECOME EXCELLENT LATER THIS MORNING OR EARLY THIS AFTERNOON. NORTHWEST TRANSPORT WINDS WILL REMAIN STEADY THROUGH THE DAY. A WEAK DISTURBANCE OVERNIGHT WILL BRING SCATTERED SHOWERS TO THE REGION AND THESE SHOWERS WILL LINGER THROUGH THE MORNING. A COLD FRONT WILL CROSS THE REGION FRIDAY CAUSING WINDS TO TURN MORE NORTHERLY AND INCREASE FOR FRIDAY. .TODAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....61-66. MIN HUMIDITY........43-48 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 10 MPH EARLY IN THE MORNING. MIXING HEIGHT.......300 FT AGL INCREASING TO 4900-5800 FT AGL. MIXING WINDS........NORTHWEST 6 TO 15 MPH INCREASING TO 15 TO 18 MPH LATE IN THE MORNING. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........17 19 22 29 38 47 56 63 WEATHER COV..... WEATHER TYPE.... TEMP............57 59 61 63 63 62 61 59 RH..............56 54 51 48 50 50 53 55 20 FT WIND DIR..NW NW NW NW NW NW NW NW 20 FT WIND SPD..8 9 9 8 8 7 6 5 20 FT WIND GUST.15 18 20 19 15 10 10 10 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY BECOMING PARTLY CLOUDY BECOMING MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE.....41-46. MAX HUMIDITY........77-82 PERCENT. WIND (20 FT)........NORTHWEST WINDS 5 TO 6 MPH EARLY IN THE EVENING BECOMING LIGHT...THEN BECOMING NORTH 5 TO 7 MPH AFTER MIDNIGHT. MIXING HEIGHT.......3100-4500 FT AGL DECREASING TO 300 FT AGL EARLY IN THE EVENING. MIXING WINDS........NORTHWEST 5 TO 13 MPH DECREASING TO 3 TO 5 MPH LATE IN THE EVENING. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........68 63 54 47 55 67 WEATHER COV..... CHANCE CHANCE CHANCE WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TEMP............58 54 51 50 47 44 RH..............59 66 68 68 74 79 20 FT WIND......NW 5 NW 5 N 4 N 4 N 5 N 5 20 FT WIND GUST.10 5 5 10 .FRIDAY... SKY/WEATHER.........PARTLY SUNNY. CHANCE OF RAIN SHOWERS IN THE MORNING. MAX TEMPERATURE.....49-54. MIN HUMIDITY........56-61 PERCENT. WIND (20 FT)........NORTH WINDS 7 TO 12 MPH. MIXING HEIGHT.......300 FT AGL INCREASING TO 4800-6200 FT AGL. MIXING WINDS........NORTHWEST 3 TO 8 MPH INCREASING TO NORTH 13 TO 21 MPH EARLY IN THE MORNING. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........76 68 57 63 WEATHER COV.....CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR NONE NONE TEMP............43 48 51 50 RH..............82 71 63 63 20 FT WIND......N 6G10 N 9G15 N 11G15 N 11G15 $$ FORECASTER...EWENS REQUESTED BY...GRETCHEN MEHMEL TYPE OF REQUEST...PRESCRIBED .TAG 20100930.NORRI.01/FGF