FNUS73 KFGF 181250 FWSFGF SPOT FORECAST FOR AGR...USFWS NATIONAL WEATHER SERVICE GRAND FORKS ND 745 AM CDT MON OCT 18 2010 FORECAST IS BASED ON IGNITION TIME OF 1230 CDT ON OCTOBER 18. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE CENTERED NEAR THE TRI STATES BORDER WITH A WEAK WIND SHIFT/TROUGH OF LOW PRESSURE OVER SOUTHERN MANITOBA WILL CAUSE LIGHT SOUTHWEST WINDS EARLY TURNING MORE WEST AND INCREASING BY LATE MORNING. THE BOUNDARY IN CANADA IS FORECAST TO WEAKEN AS IT DROPS SOUTH...SO A SHIFT IN WIND DIRECTION TO THE NORTHWEST IS NOT ANTICIPATED AT THIS TIME. HOWEVER WE WILL MONITOR THIS AND UPDATE THE FORECAST IF NEEDED. WIND SPEEDS MAY GUSTS OVER 20 MPH DEPENDING ON THE DEPTH OF MIXING THIS AFTERNOON. TIMING OF RH DROP IS ALWAYS PROBLEMATIC AND FORECAST TO BE SIMILAR TO YESTERDAY. MIXING WILL RAPIDLY IMPROVE FROM EARLY MORNING CONDITIONS AS THE INVERSION BURNS OFF QUICKLY BY 11 AM. SIMILAR CONDITIONS ARE FORECAST FOR TUESDAY AS TODAY WITH LIGHT FLOW EARLY BECOMING SOUTHWEST AFTERNOON. .TODAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....52-57. MIN HUMIDITY........30-35 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH EARLY TURNING WEST 10 TO 15 MPH LATE MORNING...SOME GUSTS TO 20 MPH. MIXING HEIGHT.......300 FT AGL INCREASING TO 3000-4300 FT AGL LATE IN THE MORNING...THEN INCREASING TO 5400-6600 FT AGL EARLY IN THE AFTERNOON INCREASING TO 7700 FT AGL LATE IN THE AFTERNOON DECREASING TO 5300 FT AGL DECREASING TO 2900 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTHWEST 9 TO 16 MPH INCREASING TO WEST 20 TO 28 MPH LATE IN THE MORNING...THEN INCREASING TO 23 TO 30 MPH LATE IN THE AFTERNOON DECREASING TO AROUND 16 MPH LATE IN THE AFTERNOON. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........47 46 45 44 42 41 40 40 WEATHER COV..... WEATHER TYPE.... TEMP............41 45 49 51 53 54 54 52 RH..............74 63 47 41 38 37 35 37 20 FT WIND DIR..W W W W W W W W 20 FT WIND SPD..11 12 14 14 12 11 10 8 20 FT WIND GUST.20 20 22 22 22 20 15 15 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY BECOMING MOSTLY CLOUDY. MIN TEMPERATURE.....30-35. MAX HUMIDITY........79-84 PERCENT. WIND (20 FT)........WEST WINDS 5 TO 8 MPH UNTIL EARLY MORNING BECOMING LIGHT. MIXING HEIGHT.......300 FT AGL. MIXING WINDS........WEST 5 TO 9 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........41 46 52 57 57 56 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............49 43 40 37 36 34 RH..............40 52 63 76 80 82 20 FT WIND......W 7 W 6 W 5 W 5 W 4 W 4 20 FT WIND GUST.10 10 10 10 5 5 .TUESDAY... SKY/WEATHER.........PARTLY SUNNY. MAX TEMPERATURE.....54-59. MIN HUMIDITY........37-42 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 10 MPH. MIXING HEIGHT.......300 FT AGL INCREASING TO 2700-4400 FT AGL LATE IN THE MORNING...THEN INCREASING TO 3300-4800 FT AGL LATE IN THE AFTERNOON DECREASING TO 1800 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........WEST 5 TO 14 MPH INCREASING TO 14 TO 17 MPH EARLY IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........54 54 54 52 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............32 37 50 56 RH..............84 70 52 42 20 FT WIND......SW 4G5 SW 6G10 SW 9G15 SW 9G15 $$ FORECASTER...EWENS REQUESTED BY...DARRIN FRANCO TYPE OF REQUEST...PRESCRIBED .TAG 20101018.AGR__.01/FGF