453
FNUS73 KGRB 121341
FWSGRB

Spot Forecast for Dunbar Barrens Unit 1...DNR
National Weather Service Green Bay WI
841 AM CDT Wed Aug 12 2026

Forecast is based on ignition time of 0800 CDT on August 13.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

There is a 30-40% for showers and thunderstorms near the burn site
late Thursday morning through Thursday evening, however, it will
no rain during that entire period. Rainfall amounts are expected
to range from around 0.1-0.25 Thursday, if a shower of storm does
pass over the burn site.

Friday dry conditions are forecast to prevail through the day at
the burn site. Temperatures will start in the middle 50s and warm
into the upper 70s by the afternoon. RHs are forecast to fall near
50 percent Friday afternoon, however, if rainfall is towards the
higher end of the expected range Thursday RHs may not fall that
low. Light northeasterly winds are expected Friday morning and
will veer around to the southeast by afternoon.

.THURSDAY...

Sky/weather.........Partly sunny (60-70 percent). Chance of showers
                    late in the morning. Slight chance of showers
                    and thunderstorms late in the afternoon, then
                    chance of showers and thunderstorms late in the
                    afternoon.
Max temperature.....Around 79.
Min humidity........56 percent.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
                    near thunderstorms late in the afternoon.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........61  51  67  75  65  61  64  65  53  54
Weather cov.....        CHC CHC             SCH CHC CHC
Weather type....        RW  RW              RW  RW  RW
Tstm cov........                            SCH CHC CHC
Temp............63  66  71  73  75  76  77  77  78  77
RH..............87  84  71  66  62  60  58  58  56  58
20 FT wind dir..SE  E   E   E   NE  E   E   E   E   E
20 FT wind spd..1   1   1   2   3   3   3   3   3   3
20 FT wind gust.5   6   6   7   7   8   9   9   11  11

.THURSDAY NIGHT...

Sky/weather.........Mostly cloudy (60-70 percent) then becoming
                    partly cloudy (35-45 percent). Chance of
                    showers and thunderstorms early in the evening.
Min temperature.....Around 54.
Max humidity........96 percent.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
                    near thunderstorms early in the evening.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........58  64  70  59  47  45  42  40  37  33  30  28
Weather cov.....CHC
Weather type....RW
Tstm cov........CHC
Temp............76  74  69  66  64  62  60  59  57  56  55  54
RH..............60  62  73  81  84  87  87  87  90  90  93  96
20 FT wind dir..E   E   E   NE  NE  NE  NE  N   N   N   N   N
20 FT wind spd..3   3   2   2   2   2   1   1   1   2   2   2
20 FT wind gust.12  12  11  9   9   9   8   8   8   8   8   8

.FRIDAY...

Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....Around 77.
Min humidity........50 percent.
Wind (20 ft)........Light winds.
Mixing height.......5500 ft AGL.
Transport winds.....Northeast 8 to 10 mph shifting to the east
                    around 9 mph late in the afternoon.
Smoke dispersal.....Poor (2500 knot-ft) early in the morning
                    increasing to good (45700 knot-ft) in the
                    afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........26  24  28  31  35  36  36  37  41  45  49  46
Weather cov.....
Weather type....
Tstm cov........
Temp............54  56  59  64  69  72  74  75  76  77  76  75
RH..............96  93  87  75  66  59  55  54  52  50  52  54
20 FT wind dir..N   N   N   NE  NE  NE  NE  E   E   E   E   E
20 FT wind spd..2   2   2   3   3   3   4   4   4   4   4   4
20 FT wind gust.8   8   9   9   11  11  11  11  11  12  12  13
Mix hgt (kft)...0.3 0.5 0.8 1.3 1.9 2.8 3.7 4.4 5.1 5.5 5.3 4.3
Transp wind dir.NE  NE  NE  NE  NE  NE  E   E   E   E   E   E
Transp wind spd.8   8   9   9   10  10  10  10  10  9   9   9
SDspl kt-ft/10003   3   6   11  17  25  34  40  45  46  43  34

$$
Forecaster...Kaiser
Requested by...Kate Lenz
Type of request...PRESCRIBED
.TAG 2619524.0/GRB
.DELDT 08/12/26
.FormatterVersion 2.0.0
.EMAIL Katherine.Lenz@wisconsin.gov