341
FNUS73 KFGF 280438
FWSFGF
SPOT FORECAST FOR THIEF LAKE NE BURN UNIT...MNDNR
NATIONAL WEATHER SERVICE GRAND FORKS ND
1138 PM CDT WED MAY 27 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 CDT ON MAY 28.
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
WINDS WILL REMAIN SOUTHERLY TO SOUTHEASTERLY THROUGH THE DAY WITH
THE PRIMARY MIXING WIND FROM THE SOUTH. SPEEDS WILL REMAIN 10-15
MPH, GUSTING OCCASIONALLY TO 25 MPH. RELATIVE HUMIDITY SHOULD FALL
FAIRLY QUICKLY, POTENTIALLY FASTER THAN FORECAST, WITH MINIMUM
VALUES APPROACHING THE RANGE OF 30-40%, MOST LIKELY IN THE RANGE
OF 32-37%. NO SHOWERS OR THUNDERSTORMS ARE EXPECTED NEAR THE BURN
SITE.
THURSDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........37 PERCENT.
WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH.
MIXING HEIGHT.......5800 FT AGL.
MIXING WINDS........SOUTH 15 TO 20 MPH.
SMOKE DISPERSAL.....17700 KNOT-FT EARLY IN THE MORNING INCREASING
TO 69300 KNOT-FT IN THE AFTERNOON.
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........8 1 1 1 6 5 1 6 2 2
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............60 63 69 73 77 80 82 85 86 87
RH..............56 52 44 41 39 39 38 38 37 38
20 FT WIND DIR..S S S S S S S S S S
20 FT WIND SPD..15 15 15 15 15 10 10 10 10 10
20 FT WIND GUST.23 22 20 20 20 19 18 18 18 18
MIX HGT (KFT)...1.1 1.2 1.5 1.8 2.3 2.9 4.0 5.8 5.1 5.4
MIXING WIND DIR.S S S S S S S S S S
MIXING WIND SPD.20 15 15 15 15 15 15 15 15 15
VRATE KT-FT/1K..18 18 21 26 30 34 48 69 62 64
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT).
MIN TEMPERATURE.....AROUND 62.
MAX HUMIDITY........73 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 10 MPH.
MIXING HEIGHT.......400 FT AGL.
MIXING WINDS........SOUTH 10 TO 15 MPH.
SMOKE DISPERSAL.....61700 KNOT-FT EARLY IN THE EVENING DECREASING
TO 4200 KNOT-FT LATE IN THE NIGHT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........10 11 35 38 27 36 34 23 35 47 54 61
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............87 85 83 76 73 71 69 68 67 65 65 64
RH..............37 38 43 54 57 59 61 63 65 67 67 69
20 FT WIND DIR..S S S SE SE S S S S S S S
20 FT WIND SPD..10 10 10 10 10 10 10 10 10 10 10 10
20 FT WIND GUST.16 14 14 14 14 14 15 16 15 16 16 15
MIX HGT (KFT)...5.1 4.2 0.7 0.6 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5
MIXING WIND DIR.S S S S S S S S S S S SW
MIXING WIND SPD.15 15 10 10 10 15 15 15 15 15 15 15
VRATE KT-FT/1K..62 46 7 5 4 5 5 6 7 6 6 6
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT).
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 10 MPH.
MIXING HEIGHT.......6800 FT AGL.
MIXING WINDS........SOUTHWEST 10 TO 15 MPH BECOMING AROUND 10 MPH
LATE IN THE MORNING, THEN SHIFTING TO THE SOUTH
IN THE AFTERNOON.
SMOKE DISPERSAL.....5000 KNOT-FT EARLY IN THE MORNING INCREASING TO
68100 KNOT-FT IN THE AFTERNOON.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........74 79 59 52 50 47 45 41 42 52 70 85
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............63 65 69 73 79 82 85 86 87 87 87 89
RH..............73 70 65 54 45 40 35 32 31 31 30 31
20 FT WIND DIR..S S SW S S SW S S S S S S
20 FT WIND SPD..10 10 10 10 10 5 5 5 5 5 10 10
20 FT WIND GUST.15 14 14 13 12 11 11 11 11 12 13 13
MIX HGT (KFT)...0.4 0.5 0.8 1.0 1.4 2.4 3.4 5.3 6.0 6.8 6.5 4.9
MIXING WIND DIR.S S SW SW SW W SW S S S S S
MIXING WIND SPD.15 15 10 10 10 10 10 5 10 10 10 10
VRATE KT-FT/1K..5 5 8 10 12 19 24 32 54 68 59 49
FORECASTER...AP
REQUESTED BY...KYLE AROLA
TYPE OF REQUEST...PRESCRIBED
.TAG 2614587.0/FGF
.DELDT 05/28/26
.FORMATTERVERSION 2.0.0
.EMAIL MATTHEW.FRANKLIN@STATE.MN.US,ROSS.LINDHOLM@STATE.MN.US,KYLE.AROLA@STATE.MN.US
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