526
FNUS73 KAPX 110908
FWSAPX

Spot Forecast for Perry Holt North...MI DNR
National Weather Service Gaylord MI
508 AM EDT Fri Sep 11 2026

Forecast is based on ignition time of 1300 EDT on September 11.
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 weather will persist through tonight. Efficient daytime
heating and mixing will produce minimum RH values in the 30-40
percent range today, potentially reaching near-critical levels of
25- 30 percent for a brief time this afternoon. South-southwest
winds will also increase today, with sustained 20-ft winds of 5-10
mph and gusts around 15 mph.

RH values will increase Saturday as moisture returns, keeping
minimum RH values above 40 percent, though southwest winds will
strengthen with gusts 25-30 mph possible. Light showers are also
possible Saturday with generally low rainfall amounts of 0.05
inches or less. Winds will shift west Saturday evening and
northwest Saturday night night.

.TODAY...

Sky/weather.........Sunny (5-15 percent).
Chance of thunder...0 percent.
Max temperature.....Around 77.
Min humidity........38 percent.
20-foot winds.......South winds 6 to 7 mph.
Transport winds.....South 9 to 12 mph.
Mixing height.......4800-5200 ft AGL.
Ventilation index...Good (385.0).

TIME (EDT)      1PM 2PM 3PM 4PM 5PM
Sky (%).........3   2   2   9   14
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0
Temp............72  73  74  74  74
RH..............44  43  41  40  38
20 ft wind dir..SW  SW  S   S   S
20 ft wind spd..7   7   8   8   8
20 ft wind gust.9   9   13  13  13
Mix hgt (kft)...4.8 5.2 5.2 5.2 4.9
Transp wind dir.SW  SW  S   S   S
Transp wind spd.9   9   10  10  12
Vrate kt-ft.....385 418 472 467 486
Ventrate Cat....GD  GD  GD  GD  GD

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent) then becoming
                    mostly cloudy (45-55 percent) then becoming
                    partly cloudy (40-50 percent) then becoming
                    mostly cloudy (60-70 percent).
Chance of thunder...0 percent.
Min temperature.....Around 49.
Max humidity........100 percent.
20-foot winds.......South winds 5 to 7 mph. Gusts up to 20 mph
                    overnight.
Transport winds.....South 9 to 13 mph.
Mixing height.......4400 ft AGL decreasing to 400-1000 ft AGL.
Ventilation index...Poor to good (33.0-440.0).

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........9   13  11  25  19  18  32  52  40  49  47  65
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............72  68  64  60  57  55  54  53  53  54  55  55
RH..............41  49  58  69  77  86  90  89  89  90  90  90
20 ft wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 ft wind spd..7   7   7   8   8   8   8   8   8   9   9   9
20 ft wind gust.12  12  12  16  16  16  20  20  20  20  20  20
Mix hgt (kft)...4.4 1.0 0.4 0.4 0.4 0.4 0.5 0.4 0.5 0.5 0.5 0.5
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.12  10  9   10  10  12  13  13  13  13  13  13
Vrate kt-ft.....440 94  33  38  40  44  50  49  50  50  50  50
Ventrate Cat....GD  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.SATURDAY...

Sky/weather.........Partly sunny (60-70 percent). Chance of rain
                    showers late in the afternoon.
Chance of thunder...11 percent.
Max temperature.....Around 80.
Min humidity........62 percent.
20-foot winds.......Southwest winds 7 to 10 mph.
Transport winds.....Southwest 12 to 20 mph.
Mixing height.......500-2200 ft AGL increasing to 4500-5900 ft AGL.
Ventilation index...Poor to good (50.0-430.0) increasing to
                    excellent (626.0) in the afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........59  58  53  81  54  67  58  66  66  71  67  51
Weather cov.....        SCH SCH SCH             SCH SCH SCH CHC
Weather type....        RW  RW  RW              RW  RW  RW  RW
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   10  10  10  10
Temp............55  55  56  61  67  71  73  75  77  78  78  77
RH..............93  96  100 93  81  73  71  69  64  62  62  67
20 ft wind dir..S   S   S   S   S   S   SW  SW  SW  SW  SW  SW
20 ft wind spd..9   9   9   10  10  10  13  13  13  13  13  13
20 ft wind gust.18  18  18  21  21  21  21  21  21  23  23  23
Mix hgt (kft)...0.5 0.5 0.5 0.9 1.4 2.2 3.1 3.9 4.7 5.9 5.7 4.5
Transp wind dir.S   S   S   S   S   SW  SW  SW  SW  SW  SW  SW
Transp wind spd.13  13  13  12  15  15  16  18  18  20  20  20
Vrate kt-ft.....50  51  54  88  186 288 430 626 757 1004970 759
Ventrate Cat....PR  PR  PR  PR  FR  FR  GD  EXL EXL EXL EXL EXL

$$
Forecaster...NSC
Requested by...Nate Stearns
Type of request...PRESCRIBED
.TAG 2621592.0/APX
.DELDT 09/11/26
.FormatterVersion 2.0.0
.EMAIL stearnsn@michigan.gov