317
FNUS73 KDLH 190949
FWSDLH

Spot Forecast for SE Core...WI DNR
National Weather Service Duluth MN
449 AM CDT Wed Aug 19 2026

Forecast is based on ignition time of 0600 CDT on August 19.
If there are questions or concerns with this forecast, or if
conditions become unrepresentative, contact the National
Weather Service in Duluth at 218-729-0653.

.DISCUSSION...

High pressure will keep skies mostly clear through today with
northwest winds increasing to 5 to 8 mph this afternoon with peak
gusts to around 13 mph. Due to the full exposure and sandy soils
of pine barrens, min RH is expected to lower to the mid 20% range
this afternoon by 1600. While the forecast shows a min RH of 26%
this afternoon, there is a 3 in 10 chance that critically dry min
RH of 25% or less occurs in the burn unit today.

Expect cloud cover to increase tonight with moderately favorable
RH recovery to 86%. Showers and thunderstorms arrive tomorrow
along a warm front, with the potential for an isolated strong to
severe thunderstorm in the afternoon and evening. Primary hazards
include large hail to 1" in diameter as well as gusty and erratic
winds. Wetting rains are likely, with total rainfall by Friday
morning being around 0.3".

.TODAY...

Sky/weather.........Sunny (15-25 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 77.
Min humidity........26 percent.
Wind (20 ft)........Light winds becoming northwest 5 to 8 mph late
                    in the morning.
Mixing height.......1100 ft AGL increasing to 8500 ft AGL.
Transport winds.....West 6 to 15 mph.
Smoke dispersal.....Poor (2000 knot-ft) increasing to excellent
                    (79700-99700 knot-ft).
Pcpn amount.........0.00 inches.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MCR MCR MCR MCR PC  MCR MCR MCR MCR PC  PC  MCR
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............46  47  53  58  66  69  71  73  74  75  75  76
RH..............89  86  74  64  50  44  38  33  31  29  26  27
20 FT wind dir..SW  SW  SW  W   W   W   W   NW  NW  NW  NW  NW
20 FT wind spd..2   2   2   2   3   4   5   5   7   8   6   5
20 FT wind gust.6   6   6   6   7   9   12  13  13  13  12  11
Mix hgt (kft)...0.4 0.4 0.5 1.1 4.6 6.6 7.4 7.9 8.3 7.9 8.5 8.0
Transp wind dir.W   W   W   W   W   NW  W   W   W   W   W   W
Transp wind spd.6   6   6   7   12  14  15  14  14  13  13  13
SDspl kt-ft/10002   2   2   7   46  80  96  95  100 87  94  88

.TONIGHT...

Sky/weather.........Partly cloudy (20-30 percent).
Chance of pcpn......10 percent.
Min temperature.....Around 50.
Max humidity........86 percent.
Wind (20 ft)........Light winds.
Mixing height.......6200 ft AGL decreasing to 900 ft AGL.
Transport winds.....Northwest 3 to 12 mph shifting to the south 5
                    to 9 mph late in the evening.
Smoke dispersal.....Excellent (61500 knot-ft) decreasing to poor
                    (1300 knot-ft).
Pcpn amount.........0.00 inches.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky cover.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR PCLDY
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Chc of pcpn (%).0      0      0      0      0      0
Temp............75     69     60     56     54     53
RH..............31     39     53     66     74     77
20 ft wind......NW 3   NW 2   N 2    SE 2   S 3    S 3
20 ft wind gust.8      5      5      5      6      8
Mix hgt (ft)....6200   400    500    500    400    400
Transport wind..NW 12  NW 3   NW 3   S 5    S 6    S 9
SDspl kt-ft/100062     1      1      2      2      4

.THURSDAY...

Sky/weather.........Partly sunny (50-60 percent). Chance of rain
                    showers through the day. Chance of
                    thunderstorms in the afternoon.
Chance of pcpn......50 percent.
Max temperature.....Around 76.
Min humidity........62 percent.
Wind (20 ft)........Light winds becoming southwest 5 to 6 mph in
                    the late morning and afternoon. Gusty and
                    erratic winds expected near thunderstorms in
                    the afternoon.
Mixing height.......1600 ft AGL increasing to 4100 ft AGL late in
                    the morning, then decreasing to 3200 ft AGL
                    late in the afternoon.
Transport winds.....Southwest 8 to 14 mph shifting to the southeast
                    late in the afternoon.
Smoke dispersal.....Poor to fair (3000-14100 knot-ft) increasing to
                    fair to good (24200-34700 knot-ft) late in the
                    morning, then increasing to good (44700
                    knot-ft) early in the afternoon decreasing to
                    fair (14400-29000 knot-ft) late in the
                    afternoon.
Pcpn amount.........0.18 inches.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky cover.......PCLDY  PCLDY  PCLDY  PCLDY  MCLDY  MCLDY
Weather cov.....S CHC  CHANCE CHANCE CHANCE CHANCE CHANCE
Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........                            S CHC  CHANCE
Chc of pcpn (%).20     40     40     50     40     40
Temp............51     57     66     70     72     71
RH..............86     77     68     63     64     71
20 ft wind......S 3    S 4    W 5    SW 6   SW 6   SW 6
20 ft wind gust.8      11     13     14     14     14
Mix hgt (ft)....400    500    1600   3200   4100   3200
Transport wind..SW 9   SW 8   SW 10  SW 13  SW 13  SW 10
SDspl kt-ft/10003      4      14     35     45     29

$$
Forecaster...Woody
Requested by...Kara Oikarinen
Type of request...PRESCRIBED
.TAG 2619959.0/DLH
.DELDT 08/19/26
.FormatterVersion 2.0.0
.EMAIL Mark.Guenther@Wisconsin.gov,Kara.Oikarinen@Wisconsin.gov