988
FNUS73 KFGF 031644
FWSFGF

Spot Forecast for Gruhl WMA Rx Burn...Minnesota Department of Natural Resources
National Weather Service Grand Forks ND
1144 AM CDT Wed Jun 3 2026

Forecast is based on ignition time of 1100 CDT on June 04.
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...

Showers and thunderstorms moving through the area tonight and into
early Thursday morning will move east of the burn site around 3
hours before ignition time. Skies will start to clear out,
allowing temperatures to rise into the low 80s and afternoon RH
values to drop into the 40 to 45 percent range. West winds at 10
to 15 mph through the late morning into the afternoon. Additional
showers and thunderstorm could develop Thursday night, but at
this point are expected to stay south of the burn site closer to
the South Dakota border.


.THURSDAY...

Sky/weather.........Mostly cloudy (75-85 percent) then becoming
                    mostly sunny (25-35 percent).
Max temperature.....Around 80.
Min humidity........43 percent.
Wind (20 ft)........West winds 5 to 10 mph.
Mixing height.......6200 ft AGL.
Mixing winds........West 10 to 15 mph.
Smoke dispersal.....3500 knot-ft early in the morning increasing to
                    74800 knot-ft in the afternoon.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........16  14  14  18  27  33  45
Weather cov.....
Weather type....
Tstm cov........
Temp............72  75  76  78  78  78  79
RH..............61  54  50  45  44  44  43
20 FT wind dir..W   W   W   W   SW  W   SW
20 FT wind spd..5   10  10  10  10  10  10
20 FT wind gust.13  14  16  16  16  18  16
Mix hgt (kft)...3.1 4.6 5.4 5.9 6.2 5.8 5.5
Mixing wind dir.W   W   W   W   W   W   W
Mixing wind spd.10  10  10  15  15  15  15
Vrate kt-ft/1K..25  42  49  65  75  64  61

.THURSDAY NIGHT...

Sky/weather.........Partly cloudy (40-50 percent) then becoming
                    mostly cloudy (60-70 percent).
Min temperature.....Around 54.
Max humidity........100 percent.
Wind (20 ft)........Southwest winds 5 to 10 mph shifting to the
                    south late in the evening, then shifting to the
                    northeast overnight becoming northeast around 5
                    mph after 3 am.
Mixing height.......300 ft AGL.
Mixing winds........Southwest 5 to 10 mph shifting to the south
                    late in the evening, then shifting to the west
                    overnight shifting to the north overnight.
Smoke dispersal.....40100 knot-ft early in the evening decreasing
                    to 2200 knot-ft late in the night.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........43  44  48  60  50  44  37  25  39  51  49  67
Weather cov.....
Weather type....
Tstm cov........
Temp............78  77  75  70  67  64  63  62  60  58  57  57
RH..............46  47  51  61  65  75  78  81  87  93  92  93
20 FT wind dir..SW  SW  SW  W   SW  S   S   NE  NE  E   NE  NE
20 FT wind spd..10  10  5   5   5   5   5   5   5   5   5   5
20 FT wind gust.14  13  9   7   6
Mix hgt (kft)...4.0 3.0 0.9 0.7 0.4 0.4 0.4 0.4 0.4 0.3 0.4 0.4
Mixing wind dir.W   W   SW  SW  SW  S   S   W   N   N   NW  N
Mixing wind spd.10  10  10  10  5   10  5   10  10  10  10  10
Vrate kt-ft/1K..40  27  7   5   2   3   2   3   3   2   3   3

.FRIDAY...

Sky/weather.........Mostly sunny (35-45 percent). Chance of rain
                    showers in the afternoon. Slight chance of
                    thunderstorms late in the afternoon.
Max temperature.....Around 79.
Min humidity........45 percent.
Wind (20 ft)........Northeast winds around 5 mph shifting to the
                    northwest in the late morning and afternoon.
                    Gusty and erratic winds expected near
                    thunderstorms late in the afternoon.
Mixing height.......5300 ft AGL.
Mixing winds........North 5 to 10 mph shifting to the northwest in
                    the afternoon.
Smoke dispersal.....2900 knot-ft early in the morning increasing to
                    48000 knot-ft in the afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........56  54  48  46  43  40  38  35  32  29  26  24
Weather cov.....                            CHC CHC CHC CHC CHC
Weather type....                            RW  RW  RW  RW  RW
Tstm cov........                                        SCH SCH
Temp............55  58  61  65  69  72  74  76  77  78  78  78
RH..............100 90  83  75  66  59  54  50  48  46  45  45
20 FT wind dir..NE  NE  N   N   N   N   NW  NW  NW  NW  NW  NW
20 FT wind spd..5   5   5   5   5   5   5   5   5   5   5   5
20 FT wind gust.6   7   7   7   7   8   9   11  12  12  12  12
Mix hgt (kft)...0.4 0.8 1.0 1.5 2.1 2.8 3.5 4.1 4.7 5.2 5.3 5.0
Mixing wind dir.NE  N   NE  N   N   N   NW  NW  NW  NW  NW  NW
Mixing wind spd.10  10  10  10  5   5   5   10  10  10  10  10
Vrate kt-ft/1K..3   5   9   12  13  16  22  29  37  44  48  44

$$
Forecaster...JR
Requested by...Greg Henderson
Type of request...PRESCRIBED
.TAG 2614901.0/FGF
.DELDT 06/03/26
.FormatterVersion 2.0.0
.EMAIL greg.henderson@state.mn.us