248  
FNUS73 KFGF 131158  
FWSFGF  
 
SPOT FORECAST FOR TNC2 & BRSP...THE NATURE CONSERVANCY  
NATIONAL WEATHER SERVICE GRAND FORKS ND  
658 AM CDT MON OCT 13 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON OCTOBER 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CALL THE NWS IN GRAND FORKS AT 701-795-5127 FOR ADDITIONAL  
INFORMATION AND MONITOR OUR WEBSITE (WWW.WEATHER.GOV/FGF) OR NOAA  
ALL-HAZARDS RADIO FOR THE LATEST UPDATES.  
   
DISCUSSION  
 
WEST WIND 10 TO 15 MPH WITH GUSTS 20 MPH THIS MORNING AND GUSTS  
15 MPH THIS AFTERNOON. SUNNY SKY WITH GOOD MIXING.  
 
   
REST OF TODAY  
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
MAX TEMPERATURE.....AROUND 54.  
MIN HUMIDITY........48 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 10 TO 15 MPH.  
MIXING HEIGHT.......3100 FT AGL.  
MIXING WINDS........NORTHWEST 15 TO 20 MPH DECREASING TO AROUND 10  
MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....25800 KNOT-FT EARLY IN THE MORNING INCREASING  
TO 47300 KNOT-FT IN THE AFTERNOON.  
 
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........11 11 12 12 10 8 10 12  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............42 45 46 48 50 52 53 52  
RH..............71 64 63 58 54 51 49 49  
20 FT WIND DIR..W NW NW NW NW NW NW NW  
20 FT WIND SPD..10 10 10 10 10 10 10 10  
20 FT WIND GUST.18 18 18 16 16 15 14 13  
MIX HGT (KFT)...2.5 2.6 2.7 2.8 3.0 3.1 3.0 2.9  
MIXING WIND DIR.W W W W NW NW NW NW  
MIXING WIND SPD.20 20 15 15 15 15 10 10  
VRATE KT-FT/1K..47 46 42 40 37 35 31 26  
   
TONIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (65-75 PERCENT).  
MIN TEMPERATURE.....AROUND 38.  
MAX HUMIDITY........79 PERCENT.  
WIND (20 FT)........NORTH WINDS AROUND 5 MPH SHIFTING TO THE  
NORTHEAST IN THE LATE EVENING AND OVERNIGHT.  
MIXING HEIGHT.......400 FT AGL.  
MIXING WINDS........NORTH 5 TO 10 MPH SHIFTING TO THE NORTHEAST  
OVERNIGHT.  
SMOKE DISPERSAL.....(2400 KNOT-FT).  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........14 26 46 73 72 81  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
TEMP............52 46 42 41 40 40  
RH..............51 63 73 76 79 78  
20 FT WIND......NW 5 N 5 NE 5 NE 5 NE 5 NE 5  
20 FT WIND GUST.11 6 6 7  
MIX HGT (FT)....1200 400 400 400 400 400  
MIXING WIND.....N 10 N 5 N 5 NE 10 NE 10 E 10  
VRATE KT-FT/1K..9 3 3 3 4 4  
   
TUESDAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SLIGHT CHANCE OF  
RAIN SHOWERS LATE IN THE MORNING. CHANCE OF  
RAIN SHOWERS IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 51.  
MIN HUMIDITY........56 PERCENT.  
WIND (20 FT)........EAST WINDS AROUND 5 MPH SHIFTING TO THE  
SOUTHEAST IN THE AFTERNOON.  
MIXING HEIGHT.......1900 FT AGL.  
MIXING WINDS........EAST AROUND 10 MPH.  
SMOKE DISPERSAL.....2600 KNOT-FT EARLY IN THE MORNING INCREASING TO  
15300 KNOT-FT IN THE AFTERNOON.  
 
TIME (CDT) 6 AM 9 AM NOON 3 PM  
SKY (%).........86 81 88 88  
WEATHER COV..... S CHC S CHC CHANCE  
WEATHER TYPE....NONE RNSHWR RNSHWR RNSHWR  
TSTM COV........  
TEMP............39 42 48 51  
RH..............79 73 62 56  
20 FT WIND......NE 5G7 E 5G9 E 5G12 SE 5G13  
MIX HGT (FT)....400 800 1700 1700  
MIXING WIND.....E 10 E 10 E 10 E 10  
VRATE KT-FT/1K..3 6 14 13  
 
 
FORECASTER...DR  
REQUESTED BY...ERIC HOFF  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2523482.0/FGF  
.DELDT 10/13/25  
.FORMATTERVERSION 2.0.0  
.EMAIL EHOFF@TNC.ORG  
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