493
FNUS73 KAPX 280859
FWSAPX

Spot Forecast for Ogemaw Fuel Break...MIDNR
National Weather Service Gaylord MI
459 AM EDT Mon Sep 28 2026

Forecast is based on ignition time of 1300 EDT on September 28.
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...Rain-free and mild conditions to continue at the burn
location today through Tuesday. Good mixing out of moisture
expected, dropping relative humidity values below 50 percent this
afternoon. Good to excellent RH recovery tonight, with values
dropping to near or below 50 percent again on Tuesday. Light north
winds today, going calm tonight, becoming light southwest on
Tuesday. Mixing heights top out near or above 4.5kft this afternoon
and Tuesday afternoon. Sub 500 ft levels for tonight.

.TODAY...

Sky/weather.........Sunny (10-20 percent). Areas of fog early in
                    the morning.
Chance of thunder...0 percent.
Max temperature.....Around 74.
Min humidity........44 percent.
20-foot winds.......Light winds.
Transport winds.....North 7 to 10 mph.
Mixing height.......400-1700 ft AGL increasing to 3000-4600 ft AGL
                    in the afternoon.
Ventilation index...Poor to good (32.0-323.0).

TIME (EDT)      1PM 2PM 3PM 4PM 5PM
Sky (%).........6   6   8   11  13
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0
Temp............69  70  72  73  72
RH..............53  49  46  44  46
20 ft wind dir..N   N   N   N   N
20 ft wind spd..5   5   5   5   5
20 ft wind gust.10  10  10  10  10
Mix hgt (kft)...3.8 4.2 4.6 4.6 4.5
Transp wind dir.N   N   N   N   N
Transp wind spd.9   8   8   7   8
Vrate kt-ft.....302 292 323 278 312
Ventrate Cat....GD  FR  GD  FR  GD

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent). Patchy fog in the
                    late evening and overnight.
Chance of thunder...0 percent.
Min temperature.....Around 42.
Max humidity........100 percent.
20-foot winds.......Light winds.
Transport winds.....North 5 to 8 mph decreasing to 2 to 3 mph
                    overnight, then shifting to the northwest
                    around 2 mph after 3 am shifting to the west
                    early in the morning.
Mixing height.......3100 ft AGL decreasing to 400-900 ft AGL.
Ventilation index...Poor to fair (8.0-219.0).

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........10  7   4   8   12  16  14  13  12  15  19  22
Weather cov.....                PTY PTY PTY PTY PTY PTY PTY PTY
Weather type....                FOG FOG FOG FOG FOG FOG FOG FOG
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............69  65  61  57  54  51  50  49  48  47  45  44
RH..............53  63  72  83  90  100 100 100 100 100 100 100
20 ft wind dir..N   N   N   W   W   W   N   N   N   N   N   N
20 ft wind spd..3   3   3   1   1   1   0   0   0   0   0   0
20 ft wind gust.9   9   9   6   6   6   2   2   2   2   2   2
Mix hgt (kft)...3.1 0.9 0.4 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   NE  NE  N   N   N   NW  W
Transp wind spd.8   7   7   7   6   5   3   3   2   2   2   2
Vrate kt-ft.....219 56  24  26  21  17  13  12  8   8   8   9
Ventrate Cat....FR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.TUESDAY...

Sky/weather.........Mostly sunny (20-30 percent). Patchy dense fog
                    early in the morning.
Chance of thunder...0 percent.
Max temperature.....Around 73.
Min humidity........49 percent.
20-foot winds.......Light winds becoming south around 5 mph late in
                    the afternoon.
Transport winds.....Southwest 3 to 12 mph.
Mixing height.......400-1800 ft AGL increasing to 2800-4700 ft AGL
                    in the afternoon.
Ventilation index...Poor to good (11.0-472.0).

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........27  33  38  32  26  19  18  16  15  15  16  16
Weather cov.....PTY PTY PTY
Weather type....FOG FOG FOG
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............43  42  44  49  57  63  67  69  71  72  73  72
RH..............100 100 100 100 83  75  65  59  53  51  49  51
20 ft wind dir..N   N   N   S   S   S   S   S   S   S   S   S
20 ft wind spd..0   0   0   2   2   2   6   6   6   6   6   6
20 ft wind gust.1   1   1   7   7   7   12  12  12  12  12  12
Mix hgt (kft)...0.4 0.4 0.4 0.5 0.8 1.8 2.8 3.5 4.1 4.6 4.7 4.1
Transp wind dir.S   S   S   SW  S   SW  SW  SW  SW  SW  SW  SW
Transp wind spd.3   3   3   5   7   8   8   8   8   10  12  9
Vrate kt-ft.....13  12  11  19  51  128 198 244 286 413 472 328
Ventrate Cat....PR  PR  PR  PR  PR  PR  FR  FR  FR  GD  GD  GD

$$
Forecaster...MSB
Requested by...Jeff Vasher
Type of request...PRESCRIBED
.TAG 2622623.0/APX
.DELDT 09/28/26
.FormatterVersion 2.0.0
.EMAIL vasherj@michigan.gov