Spot Forecast
Issued by NWS Gaylord, MI

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Spot Forecast for S210 Class...MIDNR
National Weather Service Gaylord MI
141 PM EDT Mon Jul 1 2024

Forecast is based on ignition time of 1400 EDT on July 01.
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...
Generally light winds through the rest of this afternoon, primary
direction shifts from northwest to a southerly direction. Winds
may be light and variable at times today though. Dry conditions
will remain through the rest of the afternoon with relative
humidity in the lower 30s. Quiet night with light winds
anticipated, then a chance for light rain showers on Tuesday,
especially during the afternoon hours with minimum humidity rising
to around 50 percent. Winds become more consistent out of the
south on Tuesday, with values around 10 mph gusting to near 20
mph.


.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 76.
Min humidity........33 percent.
20-foot winds.......Northwest winds 3 to 7 mph shifting to the
                    southwest around 5 mph late in the afternoon.
                    Winds could be light and variable at times.
Transport winds.....Southeast 6 to 7 mph shifting to the south late
                    in the afternoon.
Mixing height.......5900-6500 ft AGL.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Ventilation index...Fair to good (272.0-448.0).

TIME (EDT)      2PM 3PM 4PM 5PM
Sky (%).........2   3   3   4
Weather cov.....
Weather type....
Tstm cov........
Temp............74  75  76  76
RH..............37  34  33  33
20 ft wind dir..W   SW  SW  SW
20 ft wind spd..2   3   3   3
20 ft wind gust.5   8   8   8
Mix hgt (kft)...5.9 6.1 6.4 6.5
Haines index....4   4   4   4
Transp wind dir.E   SE  S   S
Transp wind spd.7   6   6   7
Vrate kt-ft.....272 280 296 448
Ventrate Cat....FR  FR  FR  GD

.TONIGHT...

Sky/weather.........Partly cloudy (20-30 percent).
Min temperature.....Around 53.
Max humidity........77 percent.
20-foot winds.......Southwest winds around 5 mph early in the
                    evening becoming light.
Transport winds.....South 6 to 14 mph.
Mixing height.......5200-6300 ft AGL decreasing to 400-900 ft AGL
                    early in the evening.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Ventilation index...Good in the early evening, then poor (29.0-435.0).

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........5   9   12  20  26  28  33  36  41  46  44  42
Weather cov.....
Weather type....
Tstm cov........
Temp............75  73  72  67  63  60  58  57  55  54  54  54
RH..............36  41  44  54  62  67  69  69  72  74  74  77
20 ft wind dir..S   S   S   SE  SE  SE  S   S   S   S   S   S
20 ft wind spd..3   3   3   5   5   5   6   6   6   7   7   7
20 ft wind gust.9   9   9   13  13  13  14  14  14  15  15  15
Mix hgt (kft)...6.3 5.2 0.9 0.5 0.5 0.4 0.4 0.4 0.4 0.5 0.5 0.5
Haines index....4   4   4   4   4   4   4   4   4   4   4   4
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.7   7   6   6   9   10  10  10  12  13  13  14
Vrate kt-ft.....435 357 55  29  46  46  46  44  51  60  60  65
Ventrate Cat....GD  GD  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.TUESDAY...

Sky/weather.........Partly sunny (65-75 percent) then becoming
                    cloudy (85-95 percent). Chance of rain late in
                    the afternoon.
Max temperature.....Around 73.
Min humidity........50 percent.
20-foot winds.......Light winds becoming south 5 to 10 mph with
                    gusts to around 24 mph.
Transport winds.....South 14 to 23 mph.
Mixing height.......500-2200 ft AGL increasing to 1600-3000 ft AGL
                    late in the morning.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Ventilation index...Poor to good (65.0-456.0) increasing to fair to
                    excellent (262.0-685.0) late in the morning.

TIME (EDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........48     54     65     81     84     89
Weather cov.....                            CHANCE CHANCE
Weather type....NONE   NONE   NONE   NONE   RAIN   RAIN
Tstm cov........
Temp............54     58     65     69     70     70
RH..............77     72     60     53     51     53
20 ft wind dir..S      S      S      S      S      S
20 ft wind spd..5      5      10     11     12     12
20 ft wind gust.10     11     20     22     23     24
Mix hgt (ft)....500    800    2200   2900   2900   2100
Haines index....4      4      4      4      4      4
Transport wind..S 14   S 15   S 21   S 23   S 22   S 18
Vrate kt-ft.....65     118    456    666    643    379
Ventrate Cat....POOR   POOR   GOOD   EXNT   EXNT   GOOD

$$
Forecaster...JLD
Requested by...Tom Barnes
Type of request...PRESCRIBED
.TAG 2417076.0/APX
.DELDT 07/01/24
.FormatterVersion 2.0.0
.EMAIL barnest2@michigan.gov