802
FNUS73 KGRB 171151
FWSGRB

Spot Forecast for Twin Pine Unit 4 piles...USFS
National Weather Service Green Bay WI
551 AM CST Mon Feb 17 2025

Forecast is based on ignition time of 0700 CST on February 18.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...A bitterly cold arctic air mass will be in place on Tuesday,
with wind chills of 15 to 25 below zero expected for the first few hours of the
proposed burn. Otherwise, expect mostly sunny skies with moderate northwest winds
and high temperatures around 12 degrees.

.TUESDAY...

Sky/weather.........Sunny (15-25 percent).
Max temperature.....Around 12.
Min humidity........45 percent.
Wind (20 ft)........Northwest winds 6 to 9 mph with gusts to 15 mph.
Mixing height.......3700 ft AGL.
Transport winds.....Northwest 14 to 18 mph.
Smoke dispersal.....Poor (11700 knot-ft) early in the morning
                    increasing to good (49100 knot-ft) in the
                    afternoon.

TIME (CST)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11  10  10  17  25  28  30  31  32  33  32
Weather cov.....
Weather type....
Tstm cov........
Temp............-10 -6  -3  1   4   8   10  11  12  11  9
RH..............86  74  75  68  62  54  50  47  45  50  54
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..6   6   7   7   8   9   9   8   8   7   6
20 FT wind gust.15  17  17  17  16  15  15  15  15  14  13
Mix hgt (kft)...1.0 1.3 1.7 2.2 2.7 3.1 3.5 3.7 3.5 2.9 1.9
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.14  17  18  17  16  16  16  15  15  14  14
SDspl kt-ft/100012  20  27  33  38  44  49  48  46  35  23

.TUESDAY NIGHT...

Sky/weather.........Partly cloudy (30-40 percent).
Min temperature.....Around 5 below.
Max humidity........86 percent.
Wind (20 ft)........Northwest winds 5 to 7 mph.
Mixing height.......600 ft AGL.
Transport winds.....Northwest 12 to 13 mph.
Smoke dispersal.....Poor (5500 knot-ft).

TIME (CST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........35  30  23  18  18  22  28  33  38  42  45  48
Weather cov.....
Weather type....
Tstm cov........
Temp............5   3   2   -1  -1  -2  -3  -4  -5  -5  -5  -5
RH..............69  72  72  79  75  75  78  82  86  86  78  78
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..5   6   5   5   5   5   5   5   5   5   6   7
20 FT wind gust.12  12  12  12  12  10  10  10  12  12  12  12
Mix hgt (kft)...0.8 0.9 1.0 1.0 0.9 0.8 0.7 0.6 0.6 0.6 0.6 0.6
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.13  13  12  12  12  13  13  13  12  12  12  12
SDspl kt-ft/10009   10  10  10  9   9   8   7   6   6   6   6

.WEDNESDAY...

Sky/weather.........Partly sunny (60-70 percent).
Max temperature.....Around 18.
Min humidity........56 percent.
Wind (20 ft)........Light winds becoming northwest around 5 mph
                    late in the morning, then becoming light late
                    in the afternoon.
Mixing height.......4400 ft AGL.
Transport winds.....North 12 to 13 mph.
Smoke dispersal.....Poor (6600 knot-ft) early in the morning
                    increasing to good (48700 knot-ft) in the
                    afternoon.

TIME (CST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........51  55  60  65  70  75  78  79  78  78  80  82
Weather cov.....
Weather type....
Tstm cov........
Temp............-3  -1  1   4   8   11  14  16  17  17  16  15
RH..............82  79  79  75  69  63  58  56  56  56  61  64
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  NW  N   N   N   NW
20 FT wind spd..3   3   3   3   3   5   5   5   5   5   3   3
20 FT wind gust.12  12  12  12  12  13  13  13  12  12  12  10
Mix hgt (kft)...0.7 0.8 1.0 1.4 2.2 3.0 3.7 4.2 4.4 4.3 3.7 2.7
Transp wind dir.NW  NW  N   N   N   N   N   N   N   N   N   N
Transp wind spd.12  12  12  12  12  12  12  12  13  13  13  12
SDspl kt-ft/10007   8   10  14  22  30  37  42  49  47  40  27

$$
Forecaster...Kieckbusch
Requested by...Ryan Russart
Type of request...PRESCRIBED
.TAG 2502950.0/GRB
.DELDT 02/18/25
.FormatterVersion 2.0.0
.EMAIL ryan.russart@usda.gov