858
FNUS73 KAPX 151453
FWSAPX

Spot Forecast for North Fork...MIDNR
National Weather Service Gaylord MI
1053 AM EDT Mon Sep 15 2025

Forecast is based on ignition time of 1100 EDT on September 16.
If conditions become unrepresentative... contact the National Weather
Service.

Please contact our office at (989)732-9306, if you have questions
or concerns with this forecast.

.DISCUSSION...Any early Tuesday morning fog should burn off rather
quickly with lots of sunshine expected by ignition time. Just some
fair weather cu development during the afternoon. Light east-southeast
winds anticipated for much of the day. Lake breezes, with chaotic wind
shifts, are expected to develop from both Lake Huron and Lake Michigan
coasts, but look unlikely to reach the burn site at this time. RHs at
the burn site look to fall into the low-mid 30s Tuesday afternoon with
strong recovery expected Tuesday night.

.TUESDAY...

Sky/weather.........Sunny (15-25 percent).
Chance of thunder...0 percent.
Max temperature.....Around 83.
Min humidity........33 percent.
20-foot winds.......Light winds.
Transport winds.....South around 3 mph shifting to the east in the
                    afternoon.
Mixing height.......1000-2200 ft AGL increasing to 5200-5700 ft
                    AGL.
Ventilation index...Poor to fair (29.0-162.0).

TIME (EDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25  15  18  22  24  27  26
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0
Temp............72  77  79  81  82  83  82
RH..............57  47  42  37  34  33  34
20 ft wind dir..SE  SE  SE  SE  E   E   E
20 ft wind spd..2   2   2   2   2   2   2
20 ft wind gust.6   6   6   6   3   3   3
Mix hgt (kft)...1.0 2.2 3.6 4.8 5.5 5.7 5.2
Transp wind dir.S   SE  SE  E   E   E   SE
Transp wind spd.3   3   3   3   3   3   3
Vrate kt-ft.....29  66  108 143 159 162 157
Ventrate Cat....PR  PR  PR  FR  FR  FR  FR

.TUESDAY NIGHT...

Sky/weather.........Mostly clear (15-25 percent).
Chance of thunder...0 percent.
Min temperature.....Around 49.
Max humidity........96 percent.
20-foot winds.......Light winds.
Transport winds.....Southeast 5 to 7 mph shifting to the south 6 to
                    7 mph overnight.
Mixing height.......1900-3800 ft AGL decreasing to 100-500 ft AGL
                    early in the evening.
Ventilation index...Poor to fair (4.0-134.0).

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........25  23  20  17  13  10  14  17  21  21  21  21
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............80  77  73  69  64  60  58  56  55  53  52  51
RH..............38  43  53  61  73  81  83  83  83  86  89  93
20 ft wind dir..E   E   E   SE  SE  SE  S   S   S   S   S   S
20 ft wind spd..3   3   3   3   3   3   2   2   2   1   1   1
20 ft wind gust.8   8   8   7   7   7   3   3   3   3   3   3
Mix hgt (kft)...3.8 1.9 0.4 0.1 0.2 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.SE  SE  SE  SE  SE  S   S   S   S   S   SW  SW
Transp wind spd.5   5   6   6   7   7   7   7   7   7   6   6
Vrate kt-ft.....134 83  21  4   14  32  32  31  30  28  26  25
Ventrate Cat....FR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.WEDNESDAY...

Sky/weather.........Sunny (10-20 percent).
Chance of thunder...2 percent.
Max temperature.....Around 84.
Min humidity........36 percent.
20-foot winds.......Light winds.
Transport winds.....Southwest 5 to 6 mph shifting to the northwest
                    around 5 mph late in the afternoon.
Mixing height.......400-2300 ft AGL increasing to 6000-6500 ft AGL.
Ventilation index...Poor to fair (18.0-252.0).

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........20  19  18  16  14  12  12  12  12  14  16  18
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............50  49  52  58  66  73  78  81  82  84  84  82
RH..............96  96  89  77  65  55  47  41  38  36  36  38
20 ft wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  W   W   W
20 ft wind spd..1   1   1   2   2   2   5   5   5   5   5   5
20 ft wind gust.3   3   3   7   7   7   9   9   9   9   9   9
Mix hgt (kft)...0.4 0.4 0.5 0.9 1.5 2.3 3.3 4.3 5.1 6.0 6.5 6.3
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  W   W   W   NW  NW
Transp wind spd.6   6   6   6   6   6   6   5   5   5   5   5
Vrate kt-ft.....20  18  25  46  78  115 153 183 205 226 243 252
Ventrate Cat....PR  PR  PR  PR  PR  PR  FR  FR  FR  FR  FR  FR

$$
Forecaster...MJG
Requested by...Jeff Vasher
Type of request...PRESCRIBED
.TAG 2521979.0/APX
.DELDT 09/15/25
.FormatterVersion 2.0.0
.EMAIL vasherj@michigan.gov