103
FNUS73 KGRB 032036
FWSGRB

Spot Forecast for Dunbar Unit 1...DNR
National Weather Service Green Bay WI
336 PM CDT Sun Aug 3 2025

Forecast is based on ignition time of 1000 CDT on August 04.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

Near-surface smoke will impact the site throughout Monday, Monday
night, and potentially into Tuesday. Dry weather is also expected
for Monday with clouds developing at times within the already
hazy sky. Afternoon RH values will be in the middle 40s with light
south to southeast winds, and a few gusts up to 15 mph.

.MONDAY...

Sky/weather.........Partly sunny (50-60 percent). Areas of smoke.
Max temperature.....Around 82.
Min humidity........44 percent.
Wind (20 ft)........Light winds becoming south 5 to 6 mph in the
                    afternoon.
Mixing height.......6900 ft AGL.
Transport winds.....South 6 to 9 mph.
Smoke dispersal.....Fair (17700 knot-ft) early in the morning
                    increasing to good (48000 knot-ft) in the
                    afternoon.

TIME (CDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........44  51  57  64  63  61  60  53
Weather cov.....ARS ARS ARS ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK SMK SMK
Tstm cov........
Temp............74  77  79  80  81  81  81  80
RH..............57  52  48  45  44  44  46  49
20 FT wind dir..S   S   S   S   S   S   S   S
20 FT wind spd..2   3   3   5   6   6   6   6
20 FT wind gust.7   8   9   10  12  13  13  13
Mix hgt (kft)...3.5 5.0 5.8 6.4 6.5 6.9 6.5 5.1
Transp wind dir.S   S   S   S   S   S   S   S
Transp wind spd.6   6   7   7   8   8   8   9
SDspl kt-ft/100018  25  35  38  45  48  45  41

.MONDAY NIGHT...

Sky/weather.........Partly cloudy (40-50 percent) then becoming
                    mostly cloudy (55-65 percent). Areas of smoke.
Min temperature.....Around 58.
Max humidity........92 percent.
Wind (20 ft)........Southeast winds 5 to 6 mph early in the evening
                    becoming light.
Mixing height.......200 ft AGL.
Transport winds.....Southeast 6 to 8 mph shifting to the east late
                    in the evening.
Smoke dispersal.....Fair (27400 knot-ft) early in the evening
                    decreasing to poor (1200 knot-ft) late in the
                    night.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........46  39  48  65  61  57  60  62  61  60  59  52
Weather cov.....ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
Tstm cov........
Temp............79  76  71  68  66  64  62  61  60  59  59  58
RH..............52  57  66  73  75  81  86  87  90  90  91  92
20 FT wind dir..SE  SE  SE  SE  SE  SE  E   E   E   NE  NE  NE
20 FT wind spd..6   5   3   3   2   2   1   1   1   1   1   1
20 FT wind gust.13  12  10  8   7   6   6   6   6   5   5   5
Mix hgt (kft)...3.9 1.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.3 0.2
Transp wind dir.S   S   SE  SE  SE  E   E   E   E   E   E   E
Transp wind spd.8   8   6   6   8   7   7   8   8   7   6   6
SDspl kt-ft/100027  10  2   2   3   3   3   3   3   2   2   1

.TUESDAY...

Sky/weather.........Mostly sunny (45-55 percent). Areas of smoke in
                    the morning.
Max temperature.....Around 82.
Min humidity........47 percent.
Wind (20 ft)........Light winds becoming southeast 5 to 7 mph late
                    in the morning.
Mixing height.......6600 ft AGL.
Transport winds.....East 6 to 7 mph shifting to the southeast 8 to
                    14 mph in the late morning and afternoon.
Smoke dispersal.....Poor (900 knot-ft) early in the morning
                    increasing to excellent (79400 knot-ft) in the
                    afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........44  37  38  40  41  47  54  60  60  61  61  52
Weather cov.....ARS ARS ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK SMK
Tstm cov........
Temp............59  60  65  70  74  78  80  81  82  81  80  79
RH..............91  88  79  71  63  56  52  49  48  47  49  51
20 FT wind dir..NE  NE  E   E   SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..1   1   2   2   3   5   5   6   7   7   7   7
20 FT wind gust.5   6   7   8   9   12  14  15  16  16  16  16
Mix hgt (kft)...0.2 0.3 0.7 1.3 2.2 3.6 5.1 6.1 6.6 6.5 5.9 4.5
Transp wind dir.E   E   E   SE  SE  SE  SE  SE  SE  SE  SE  SE
Transp wind spd.6   6   6   7   8   9   12  13  14  14  14  12
SDspl kt-ft/10001   2   4   8   16  29  51  68  79  78  71  45

$$
Forecaster...Kruk
Requested by...Aaron McCullough
Type of request...PRESCRIBED
.TAG 2519157.0/GRB
.DELDT 08/03/25
.FormatterVersion 2.0.0
.EMAIL Aaron.McCullough@wisconsin.gov