898
FNUS73 KGRB 221302
FWSGRB

Spot Forecast for Dunbar Barrens Unit 1...DNR
National Weather Service Green Bay WI
802 AM CDT Fri Aug 22 2025

Forecast is based on ignition time of 0800 CDT on August 26.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions or concerns with
this forecast.

.DISCUSSION...Canadian high pressure will bring dry and cool conditions
during the burn period on Tuesday. There are some indications that the high will
slide south on Wednesday, with a Canadian cold front sagging south toward
Lake Superior. If this occurs, west winds could be stronger with higher gusts
than currently forecast for Wednesday.

This spot forecast is being provided well in advance to provide an outlook for
next week`s burn. Feel free to request an updated forecast early next week.

.TUESDAY...

Sky/weather.........Sunny (20-30 percent).
Max temperature.....Around 67.
Min humidity........45 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph with gusts to 15 mph.
Mixing height.......8500 ft AGL.
Transport winds.....North 10 to 13 mph.
Smoke dispersal.....Fair (16900 knot-ft) early in the morning
                    increasing to excellent (94000 knot-ft) in the
                    afternoon.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........15  16  16  20  24  28  29  30  31  27
Weather cov.....
Weather type....
Tstm cov........
Temp............50  55  59  62  63  64  65  65  65  64
RH..............80  69  60  54  50  46  45  45  45  48
20 FT wind dir..NW  NW  N   N   N   N   N   NW  NW  NW
20 FT wind spd..5   6   6   6   7   7   7   7   6   5
20 FT wind gust.13  13  14  15  15  15  15  15  14  13
Mix hgt (kft)...1.9 3.8 5.4 6.3 6.7 7.1 8.0 8.5 8.2 6.1
Transp wind dir.NW  N   N   N   N   N   N   N   N   N
Transp wind spd.10  12  12  12  13  13  13  13  12  10
SDspl kt-ft/100017  38  54  63  74  78  88  94  82  55

.TUESDAY NIGHT...

Sky/weather.........Mostly clear (15-25 percent).
Min temperature.....Around 45.
Max humidity........83 percent.
Wind (20 ft)........North winds up to 5 mph early in the evening
                    becoming light.
Mixing height.......200 ft AGL.
Transport winds.....Northwest 6 to 10 mph shifting to the west 6 to
                    9 mph overnight.
Smoke dispersal.....Fair (29600 knot-ft) early in the evening
                    decreasing to poor (1000 knot-ft) late in the
                    night.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........22  18  17  15  14  15  15  16  15  14  13  14
Weather cov.....
Weather type....
Tstm cov........
Temp............62  60  57  54  51  49  49  48  47  47  47  47
RH..............54  58  64  69  74  80  77  80  83  79  79  79
20 FT wind dir..N   N   N   NW  NW  NW  W   W   W   W   W   W
20 FT wind spd..5   3   3   2   2   2   2   2   2   3   3   3
20 FT wind gust.12  10  9   8   8   8   9   9   9   10  10  10
Mix hgt (kft)...3.3 0.9 0.2 0.2 0.4 0.3 0.3 0.4 0.4 0.4 0.4 0.3
Transp wind dir.N   N   N   NW  NW  NW  W   W   W   W   W   W
Transp wind spd.10  9   8   7   6   6   6   6   7   7   8   9
SDspl kt-ft/100030  7   1   1   2   2   2   2   2   2   3   2

.WEDNESDAY...

Sky/weather.........Sunny (20-30 percent).
Max temperature.....Around 73.
Min humidity........46 percent.
Wind (20 ft)........West winds 5 to 10 mph with gusts to 15 mph.
Mixing height.......8000 ft AGL.
Transport winds.....West 9 to 12 mph.
Smoke dispersal.....Poor (1800 knot-ft) early in the morning
                    increasing to excellent (79500 knot-ft) in the
                    afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........16  17  18  20  21  24  26  29  29  30  30  29
Weather cov.....
Weather type....
Tstm cov........
Temp............47  49  53  58  63  66  69  70  71  71  70  69
RH..............79  77  71  64  58  52  47  46  46  47  51  55
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..5   5   5   6   6   6   6   6   6   6   6   6
20 FT wind gust.12  12  12  13  13  13  14  14  15  15  15  14
Mix hgt (kft)...0.2 0.4 1.0 1.9 3.1 5.1 6.9 8.0 7.1 5.4 3.6 2.5
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.9   10  10  12  12  12  12  12  12  12  12  12
SDspl kt-ft/10002   4   9   19  31  51  70  80  71  54  36  25

$$
Forecaster...Kieckbusch
Requested by...Aaron McCullough
Type of request...PRESCRIBED
.TAG 2520442.0/GRB
.DELDT 08/25/25
.FormatterVersion 2.0.0
.EMAIL Aaron.McCullough@Wisconsin.gov