Spot Forecast
Issued by NWS Grand Forks, ND
Issued by NWS Grand Forks, ND
145
FNUS73 KFGF 291351
FWSFGF
Spot Forecast for Mayflower...MNDNR
National Weather Service Grand Forks ND
851 AM CDT Mon Sep 29 2025
Forecast is based on ignition time of 1200 CDT on September 29.
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...
Light and variable winds this morning will eventually steady out
of the southeast at 5 to 10 mph by afternoon as a warm front lifts
north across the area. Sunny and warm conditions will continue,
with highs in the 80s and afternoon RH values dropping to around
40 percent. Shower and thunderstorm activity today should stay
north of the burn site closer to the Canadian border.
Southeasterly winds will continue through tonight and tomorrow,
picking up to the 10 to 20 mph range by Tuesday afternoon.
.TODAY...
Sky/weather.........Sunny (20-30 percent).
Max temperature.....Around 83.
Min humidity........39 percent.
Wind (20 ft)........Light winds becoming northeast around 5 mph
early in the morning, then shifting to the
southeast in the late morning and afternoon.
Mixing height.......3400 ft AGL.
Mixing winds........South 5 to 10 mph.
Smoke dispersal.....2700 knot-ft early in the morning increasing to
33900 knot-ft in the afternoon.
TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........22 29 26 13 6 16
Weather cov.....
Weather type....
Tstm cov........
Temp............73 79 81 82 83 82
RH..............47 41 39 41 41 41
20 FT wind dir..SE SE SE SE SE SE
20 FT wind spd..5 5 5 5 5 5
20 FT wind gust.7 9 11 12 12 12
Mix hgt (kft)...1.3 2.0 2.4 2.9 3.4 3.2
Mixing wind dir.SE S S S S S
Mixing wind spd.5 5 10 10 10 10
Vrate kt-ft/1K..7 12 17 26 34 32
.TONIGHT...
Sky/weather.........Partly cloudy (30-40 percent).
Min temperature.....Around 59.
Max humidity........93 percent.
Wind (20 ft)........Southeast winds around 5 mph.
Mixing height.......400 ft AGL.
Mixing winds........Southeast 5 to 10 mph shifting to the south
around 15 mph late in the evening.
Smoke dispersal.....(4000 knot-ft).
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........23 19 23 30 34 38 42 47 45 43 41 40
Weather cov.....
Weather type....
Tstm cov........
Temp............80 75 71 69 67 66 65 64 63 62 61 61
RH..............47 58 64 68 73 81 84 84 87 90 90 87
20 FT wind dir..SE E E SE SE SE SE SE SE SE SE SE
20 FT wind spd..5 5 5 5 5 5 5 5 5 5 5 5
20 FT wind gust.12 11 11 11 12 12 12 13 13 13 14 14
Mix hgt (kft)...1.4 0.7 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Mixing wind dir.SE SE SE SE SE S S S S S SE S
Mixing wind spd.5 10 10 10 10 15 15 15 15 15 15 15
Vrate kt-ft/1K..9 6 4 5 5 5 5 5 5 5 5 5
.TUESDAY...
Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....Around 79.
Min humidity........52 percent.
Wind (20 ft)........Southeast winds 5 to 10 mph. Gusts up to 21 mph
late in the morning.
Mixing height.......3500 ft AGL.
Mixing winds........Southeast 15 to 20 mph.
Smoke dispersal.....5700 knot-ft early in the morning increasing to
67400 knot-ft in the afternoon.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........38 37 37 36 36 35 35 42 44 46 48 51
Weather cov.....
Weather type....
Tstm cov........
Temp............60 59 60 62 66 69 73 76 77 77 78 76
RH..............93 93 93 90 78 70 62 56 54 54 52 56
20 FT wind dir..SE SE SE SE SE SE SE SE SE SE SE SE
20 FT wind spd..5 5 10 10 10 10 10 10 10 10 10 10
20 FT wind gust.14 14 15 16 16 18 19 19 19 19 19 19
Mix hgt (kft)...0.5 0.5 0.6 0.8 1.0 1.5 2.0 2.5 2.9 3.2 3.5 2.7
Mixing wind dir.SE SE SE S S SE SE SE SE S S S
Mixing wind spd.15 15 15 15 20 20 20 20 20 20 20 20
Vrate kt-ft/1K..6 6 7 12 17 27 38 48 55 61 67 49
$$
Forecaster...JR
Requested by...Ben Lang
Type of request...PRESCRIBED
.TAG 2522704.0/FGF
.DELDT 09/29/25
.FormatterVersion 2.0.0
.EMAIL ben.lang@state.mn.us