101
FNUS73 KAPX 091027
FWSAPX

Spot Forecast for M18 Fuel Break RX...USFS
National Weather Service Gaylord MI
627 AM EDT Mon Mar 9 2026

Forecast is based on ignition time of 1000 EDT on March 09.
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...Well above normal temperatures today at the burn
location, with highs this afternoon likely topping out in the
middle 60s. Gusty southwest winds, easily exceeding critical
levels at times through mid-day, will gradually veer more west
and northwest while decreasing in speed this afternoon behind a
passing weak cool front. This frontal passage will remain rain-
free, with rain-free conditions continuing through the day
Tuesday. Rain and freezing rain chances return Tuesday night.
Despite the warmth today, enough low level moisture remains to
keep relative humidity values above critical levels. Good
ventilation rates expected through much of today...gradually
falling later in the afternoon. Winds become light northeast
tonight, with northeast winds continuing on Tuesday.

.REST OF TODAY...

Sky/weather.........Partly cloudy (20-30 percent).
Chance of thunder...0 percent.
Max temperature.....Around 64.
Min humidity........41 percent.
20-foot winds.......Southwest winds 9 to 13 mph with gusts to
                    around 30 mph.
Transport winds.....West 18 to 23 mph decreasing to around 13 mph
                    late in the afternoon.
Mixing height.......2100-3400 ft AGL.
Ventilation index...Good (373.0).

TIME (EDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........21  13  17  37  30  25  27  18
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0
Temp............45  52  56  60  61  63  63  63
RH..............76  63  57  47  46  43  43  41
20 ft wind dir..SW  SW  SW  SW  SW  W   W   W
20 ft wind spd..13  13  13  13  13  12  12  12
20 ft wind gust.30  30  28  28  28  21  21  21
Mix hgt (kft)...2.1 2.3 2.4 2.7 2.9 3.1 3.3 3.4
Transp wind dir.SW  SW  SW  W   W   W   W   W
Transp wind spd.22  23  22  21  20  20  18  13
Vrate kt-ft.....373 429 439 464 462 496 456 437
Ventrate Cat....GD  GD  GD  GD  GD  GD  GD  GD

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (55-65 percent) then becoming
                    partly cloudy (40-50 percent).
Chance of thunder...0 percent.
Min temperature.....Around 36.
Max humidity........76 percent.
20-foot winds.......Northwest winds 5 to 7 mph shifting to the
                    northeast in the late evening and overnight.
Transport winds.....Northwest 9 to 12 mph shifting to the northeast
                    10 to 12 mph overnight.
Mixing height.......500-2400 ft AGL.
Ventilation index...Poor to fair (35.0-244.0).

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........41  40  30  22  25  38  48  59  46  39  42  46
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............61  57  53  47  46  45  43  42  40  39  38  37
RH..............44  51  57  68  68  70  73  73  76  76  73  72
20 ft wind dir..NW  NW  NW  NE  NE  NE  NE  NE  NE  NE  NE  NE
20 ft wind spd..7   7   7   5   5   5   7   7   7   6   6   6
20 ft wind gust.15  15  15  12  12  12  14  14  14  13  13  13
Mix hgt (kft)...2.4 1.4 0.6 0.6 0.5 0.6 0.6 0.6 0.7 0.7 0.8 0.7
Transp wind dir.NW  N   N   N   N   NE  NE  E   E   E   NE  NE
Transp wind spd.12  10  9   9   9   10  12  10  10  12  12  12
Vrate kt-ft.....244 115 35  40  37  50  58  54  68  78  84  78
Ventrate Cat....FR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.TUESDAY...

Sky/weather.........Partly sunny (65-75 percent).
Chance of thunder...1 percent.
Max temperature.....Around 56.
Min humidity........52 percent.
20-foot winds.......Northeast winds 6 to 9 mph.
Transport winds.....East 10 to 15 mph.
Mixing height.......600-1900 ft AGL.
Ventilation index...Poor to fair (58.0-205.0).

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........54  59  82  79  79  78  78  79  79  79  80  80
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............36  36  37  37  39  42  46  49  51  52  52  51
RH..............72  72  72  75  76  70  63  58  54  52  52  52
20 ft wind dir..NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
20 ft wind spd..6   6   6   6   6   6   8   8   8   9   9   9
20 ft wind gust.13  13  13  15  15  15  16  16  16  17  17  17
Mix hgt (kft)...0.7 0.6 0.7 1.0 1.1 1.3 1.4 1.7 1.9 1.9 1.8 1.7
Transp wind dir.NE  NE  NE  NE  E   E   E   E   E   E   E   E
Transp wind spd.12  10  10  14  13  13  14  14  14  14  14  15
Vrate kt-ft.....78  58  68  105 115 113 129 149 170 184 195 205
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  FR  FR  FR  FR  FR

$$
Forecaster...MSB
Requested by...Travis Wiltse
Type of request...PRESCRIBED
.TAG 2605065.1/APX
.DELDT 03/09/26
.FormatterVersion 2.0.0
.EMAIL travis.a.wiltse@usda.gov