033
FNUS73 KFGF 011418
FWSFGF
SPOT FORECAST FOR SIMPSON...US FISH AND WILDLIFE
NATIONAL WEATHER SERVICE GRAND FORKS ND
918 AM CDT WED OCT 1 2008
FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON OCTOBER 01.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HIGH PRESSURE WILL DROP OUT OF MANITOBA AND CENTER ITSELF OVER
WEST CENTRAL MINNESOTA BY AFTERNOON. RESIDUAL CLOUDINESS WILL DRIFT
IN AND OUT OF THE BURN AREA RESULTING IN FLUCTUATING TEMPERATURES
AND CORRESPONDINGLY THE MINIMUM HUMIDITIES. FOR THE MOST
PART...WITH COOL TEMPERATURES SETTLING OVER THE AREA...RELATIVE
HUMIDITIES WILL REMAIN ABOVE THE 35-40 PERCENT MARK. EXPECT A VERY
GRADUAL SHIFT OF NORTHERLY WINDS TO NORTHWESTERLY BY AFTERNOON.
POOR VERTICAL MIXING IS EXPECTED EARLY UNTIL INVERSION
BREAK...THEN SMOKE DISPERSION WILL IMPROVE THROUGH THE AFTERNOON.
TODAY
SKY/WEATHER.........MOSTLY SUNNY. PATCHY FOG EARLY IN THE MORNING.
MAX TEMPERATURE.....58-63.
MIN HUMIDITY........46-51 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......300-1300 FT AGL INCREASING TO 4100-5200 FT AGL.
MIXING WINDS........NORTH 6 TO 13 MPH.
TIME (CDT) NOON 2 PM 4 PM 6 PM
SKY (%).........37 37 36 34
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TEMP............52 57 60 59
RH..............56 53 53 53
20 FT WIND......N 10 N 10 NW 10 NW 9
20 FT WIND GUST. 10
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY BECOMING MOSTLY CLOUDY.
MIN TEMPERATURE.....37-42.
MAX HUMIDITY........74-79 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 8 MPH.
MIXING HEIGHT.......2500-3600 FT AGL DECREASING TO 300-1400 FT AGL
EARLY IN THE EVENING.
MIXING WINDS........WEST 5 TO 13 MPH.
TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM
SKY (%).........34 34 36 39 44 49
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TEMP............57 50 46 44 42 41
RH..............51 58 71 73 79 76
20 FT WIND......NW 8 NW 7 W 6 W 5 W 5 W 6
20 FT WIND GUST.10 10
THURSDAY
SKY/WEATHER.........PARTLY SUNNY.
MAX TEMPERATURE.....64-69.
MIN HUMIDITY........38-43 PERCENT.
WIND (20 FT)........NORTH WINDS 9 TO 14 MPH.
MIXING HEIGHT.......300-1300 FT AGL INCREASING TO 2300-4200 FT AGL
LATE IN THE MORNING...THEN INCREASING TO
4200-5900 FT AGL EARLY IN THE AFTERNOON
DECREASING TO 2500 FT AGL LATE IN THE
AFTERNOON.
MIXING WINDS........NORTHWEST 7 TO 16 MPH SHIFTING TO THE NORTH 18
TO 24 MPH IN THE AFTERNOON.
TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
SKY (%).........52 54 53 52 51 49
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TEMP............39 42 52 60 65 66
RH..............79 71 63 49 45 45
20 FT WIND......W 7 W 9 NW 13 NW 14 N 13 N 10
20 FT WIND GUST.10 10 15 15 15 15
FORECASTER...HOPKINS
REQUESTED BY...TROY BOSCHEE
TYPE OF REQUEST...PRESCRIBED
.TAG 20081001.SIMPS.01/FGF
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