631
FNUS73 KAPX 180955
FWSAPX

Spot Forecast for County Line 15...USFS
National Weather Service Gaylord MI
555 AM EDT Fri Sep 18 2026

Forecast is based on ignition time of 1100 EDT on September 18.
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 expected at the burn location today.
May see a few light showers impact the location later tonight into
Saturday, but any rain amounts will remain minimal...if it rains
at all. Low level moisture will mix out some today, with afternoon
values dropping to near 55 percent. Excellent RH recovery
tonight, with elevated values continuing on Saturday. Sub-critical
level northeast winds today. Light winds tonight as they slow
veer around to southeast by morning. Southeast winds continue on
Saturday, but again they should remain below critical levels.

.REST OF TODAY...

Sky/weather.........Mostly sunny (40-50 percent) then becoming
                    mostly cloudy (70-80 percent).
Chance of thunder...0 percent.
Max temperature.....Around 67.
Min humidity........56 percent.
20-foot winds.......Northeast winds around 5 mph late in the
                    morning becoming light.
Transport winds.....Northeast 7 to 10 mph.
Mixing height.......2300-3800 ft AGL.
Ventilation index...Fair to good (208.0-300.0).

TIME (EDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........22  34  46  58  64  69  75
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0
Temp............61  61  62  64  65  65  64
RH..............78  69  62  60  60  56  58
20 ft wind dir..NE  NE  NE  NE  NE  NE  NE
20 ft wind spd..6   6   6   6   5   5   5
20 ft wind gust.10  10  10  10  9   9   9
Mix hgt (kft)...2.3 3.1 3.3 3.8 3.7 3.5 2.7
Transp wind dir.NE  NE  NE  N   N   N   NE
Transp wind spd.10  9   8   8   7   8   7
Vrate kt-ft.....208 300 274 293 246 238 238
Ventrate Cat....FR  GD  FR  FR  FR  FR  FR

.TONIGHT...

Sky/weather.........Cloudy (85-95 percent). Slight chance of rain
                    early in the evening. Slight chance of rain
                    overnight, then chance of rain overnight.
Chance of thunder...1 percent.
Min temperature.....Around 49.
Max humidity........83 percent.
20-foot winds.......Light winds.
Transport winds.....East 7 to 9 mph becoming 7 to 8 mph overnight.
Mixing height.......400-2300 ft AGL.
Ventilation index...Poor to fair (25.0-205.0).

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........77  78  80  87  93  100 98  96  94  92  89  87
Weather cov.....        SCH                 SCH CHC CHC CHC CHC
Weather type....        RN                  RN  RN  RN  RN  RN
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............64  62  56  53  53  51  50  50  50  49  50  49
RH..............60  69  77  83  83  86  86  86  86  89  86  89
20 ft wind dir..NE  NE  NE  E   E   E   E   E   E   E   E   E
20 ft wind spd..5   5   5   3   3   3   1   1   1   2   2   2
20 ft wind gust.9   9   9   8   8   8   5   5   5   6   6   6
Mix hgt (kft)...2.3 1.3 0.9 0.8 0.7 0.6 0.5 0.5 0.5 0.4 0.4 0.4
Transp wind dir.NE  E   E   E   E   E   E   E   E   E   E   E
Transp wind spd.7   9   9   8   7   8   8   7   8   7   7   8
Vrate kt-ft.....205 151 75  32  34  26  28  27  26  26  25  25
Ventrate Cat....FR  FR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.SATURDAY...

Sky/weather.........Cloudy (85-95 percent).
Chance of thunder...1 percent.
Max temperature.....Around 62.
Min humidity........70 percent.
20-foot winds.......Light winds becoming southeast around 5 mph
                    late in the morning, then becoming light late
                    in the afternoon.
Transport winds.....East 8 to 12 mph.
Mixing height.......400-2200 ft AGL.
Ventilation index...Poor to good (25.0-344.0).

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........85  83  81  82  83  84  88  92  96  93  89  86
Weather cov.....    SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH
Weather type....    RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............49  49  50  53  56  58  59  60  60  60  61  61
RH..............96  93  96  96  86  80  77  72  67  67  70  67
20 ft wind dir..E   E   E   E   E   E   SE  SE  SE  SE  SE  SE
20 ft wind spd..2   2   2   5   5   5   6   6   6   6   6   6
20 ft wind gust.6   6   6   12  12  12  12  12  12  12  12  12
Mix hgt (kft)...0.4 0.4 0.6 1.0 1.5 1.9 2.1 2.2 2.2 2.2 2.2 2.1
Transp wind dir.E   E   E   E   E   E   E   E   E   E   E   E
Transp wind spd.8   8   8   10  12  12  12  12  12  12  10  10
Vrate kt-ft.....25  29  29  96  146 231 252 224 197 298 344 243
Ventrate Cat....PR  PR  PR  PR  FR  FR  FR  FR  FR  FR  GD  FR

$$
Forecaster...MSB
Requested by...Travis Wiltse
Type of request...PRESCRIBED
.TAG 2622104.0/APX
.DELDT 09/18/26
.FormatterVersion 2.0.0
.EMAIL travis.a.wiltse@usda.gov