559
FNUS73 KDLH 211257
FWSDLH

Spot Forecast for Long Lake Fire...MN DNR
National Weather Service Duluth MN
757 AM CDT Tue Jul 21 2026

Forecast is based on forecast start time of 0800 CDT on July 21.
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...

Mostly cloudy to partly sunny skies through mid-afternoon, with
decreasing cloud cover later this afternoon and evening. Breezy
northerly winds developing today at 8-11 mph with gusts upwards of
20-25 mph, strongest in the late morning through mid-afternoon
before rapidly weakening this evening. Look for minimum relative
humidity around 45%, though if cloud cover decreases quicker than
forecast this afternoon minimum relative humidity could dip to
40%. Cooler high temperature around 69F this afternoon. Can`t
rule out a few stray, light rain showers/sprinkles through around
10-11 AM (10% chance), but little to no accumulation is expected.
RH recovery to 90-100% tonight expected.

Becoming drier on Wednesday as high pressure settles into the
region under mostly sunny skies. Sustained winds will be on the
lighter side at around 5 mph or less, though occasional afternoon
gusts of 10-15 mph are possible due to deeper mixing heights
increasing to 6000-8000 ft in the afternoon. High temperature
around 77F expected, with lower minimum RH of 30-35% by the mid
to late afternoon to early evening.

.REST OF TODAY...

Sky/weather.........Partly sunny (55-65 percent).
Chance of pcpn......10 percent.
Max temperature.....Around 69.
Min humidity........45 percent.
Wind (20 ft)........North winds 8 to 10 mph with gusts to around 22
                    mph.
Mixing height.......4700 ft AGL increasing to 5100 ft AGL late in
                    the afternoon.
Transport winds.....North 18 to 23 mph.
Smoke dispersal.....Good to excellent (56300-72300 knot-ft)
                    increasing to excellent (78100 knot-ft) late in
                    the afternoon.
Pcpn amount.........0.00 inches.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MC  MC  MC  MC  MC  MC  MC  MC  PC  PC
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).10  0   0   0   0   0   0   0   0   0
Temp............62  63  63  64  65  66  67  67  68  68
RH..............79  74  70  65  60  56  52  50  47  45
20 FT wind dir..N   N   N   N   N   N   N   N   N   N
20 FT wind spd..6   8   10  10  10  9   9   9   8   8
20 FT wind gust.18  20  22  22  21  21  20  19  18  18
Mix hgt (kft)...2.8 3.0 3.2 3.5 3.8 4.0 4.4 4.7 4.9 5.1
Transp wind dir.N   N   N   N   N   N   N   N   N   N
Transp wind spd.23  23  23  22  22  21  21  20  18  18
SDspl kt-ft/100056  60  65  67  72  72  79  80  78  82

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent).
Chance of pcpn......0 percent.
Min temperature.....Around 48.
Max humidity........93 percent.
Wind (20 ft)........North winds 6 to 7 mph early in the evening
                    becoming light.
Mixing height.......4800 ft AGL decreasing to 2300 ft AGL early in
                    the evening.
Transport winds.....North 7 to 16 mph shifting to the northwest 7
                    to 8 mph overnight.
Smoke dispersal.....Good to excellent (59600-67600 knot-ft)
                    decreasing to poor (2500 knot-ft).
Pcpn amount.........0.00 inches.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......PC  PC  PC  MCR MCR MCR MCR MCR MCR MCR MCR MCR
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............67  67  64  61  58  56  55  54  53  51  50  50
RH..............47  45  52  65  72  77  77  80  83  89  89  89
20 FT wind dir..N   N   N   N   NW  NW  N   N   W   W   W   W
20 FT wind spd..7   5   3   2   1   1   0   0   1   1   1   1
20 FT wind gust.16  14  11  7   6   5   5   5   5   5   5   6
Mix hgt (kft)...4.8 4.6 2.3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.N   N   N   N   N   N   NW  NW  NW  NW  NW  W
Transp wind spd.16  15  12  8   7   7   7   7   8   8   7   7
SDspl kt-ft/100068  60  23  3   3   3   3   3   3   3   3   3

.WEDNESDAY...

Sky/weather.........Sunny (15-25 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 77.
Min humidity........34 percent.
Wind (20 ft)........Light winds becoming northwest 5 to 6 mph late
                    in the morning.
Mixing height.......1400 ft AGL increasing to 8000 ft AGL.
Transport winds.....Northwest 7 to 13 mph.
Smoke dispersal.....Poor (2500-8100 knot-ft) increasing to
                    excellent (63600-85700 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 MCR MCR MCR MCR MCR MCR MCR MCR
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............49  53  58  61  68  70  72  73  75  75  76  77
RH..............93  89  77  67  51  44  39  38  36  37  34  35
20 FT wind dir..W   W   NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..1   2   2   2   3   4   4   4   4   4   5   4
20 FT wind gust.6   7   7   8   9   11  11  12  12  12  13  12
Mix hgt (kft)...0.4 0.4 1.4 3.1 4.8 6.0 6.6 7.2 8.0 7.8 6.8 6.4
Transp wind dir.W   W   NW  NW  NW  NW  NW  NW  W   NW  NW  NW
Transp wind spd.7   7   7   10  10  12  12  13  12  13  12  12
SDspl kt-ft/10003   3   8   28  43  60  66  79  80  86  68  64

$$
Forecaster...Cory
Requested by...Mike Hanowski
Type of request...WILDFIRE
.TAG 2617866.0/DLH
.DELDT 07/21/26
.FormatterVersion 2.0.0
.EMAIL michael.hanowski@state.mn.us