959
FNUS73 KAPX 310750
FWSAPX

Spot Forecast for Grass lake fuel break...USFS
National Weather Service Gaylord MI
350 AM EDT Sat May 31 2025

Forecast is based on ignition time of 0400 EDT on May 31.
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...
Combination of dry and breezy conditions will result in elevated
fire conditions today. Northwest winds will continue to be breezy
through the rest of tonight/the predawn hours and through much of
the day today with gusts between 20 and 25 mph. Humidity drops
into the low 30s this afternoon, and thus dry conditions will
prevail. Some uncertainty in regards to mixing heights, especially
since the site is near the shoreline, but northwest winds should
allow for mixing heights between 2.5 to 4.5 kft this morning
through the afternoon hours. Dry and breezy again on Sunday.



.REST OF TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent). Chance of
                    sprinkles after 3 am.
Chance of thunder...0 percent.
Min temperature.....Around 43.
Max humidity........83 percent.
20-foot winds.......North winds around 10 to 15 mph, gusts to 20 to 25 mph.
Transport winds.....North 21 to 22 mph.
Mixing height.......2400-2700 ft AGL.
Ventilation index...Good (506.0).

TIME (EDT)      4AM 5AM
Sky (%).........70  67
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0
Temp............47  45
RH..............76  75
20 ft wind dir..N   N
20 ft wind spd..15  15
20 ft wind gust.23  23
Mix hgt (kft)...2.4 2.7
Transp wind dir.N   N
Transp wind spd.21  22
Vrate kt-ft.....506 591
Ventrate Cat....GD  GD

.TODAY...

Sky/weather.........Mostly sunny (25-35 percent).
Chance of thunder...0 percent.
Max temperature.....Around 65.
Min humidity........30 percent.
20-foot winds.......North winds around 10 to 15 mph, gusts 20 to 25 mph.
Transport winds.....North 20 to 22 mph.
Mixing height.......2800-4100 ft AGL.
Ventilation index...Good to excellent (541.0-843.0).

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........59  52  44  40  35  31  22  14  5   4   4   3
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............44  45  46  48  53  55  57  59  62  63  63  63
RH..............74  72  67  64  54  50  45  40  35  33  33  30
20 ft wind dir..N   N   N   N   N   N   N   N   N   N   N   N
20 ft wind spd..15  15  15  14  14  14  14  14  14  14  14  14
20 ft wind gust.23  23  23  22  22  22  21  21  21  20  20  20
Mix hgt (kft)...3.1 3.5 3.8 3.9 4.0 4.1 3.9 3.7 3.5 3.3 3.0 2.8
Transp wind dir.N   N   N   N   N   N   N   N   N   N   N   NW
Transp wind spd.22  22  21  20  21  21  21  22  21  21  20  20
Vrate kt-ft.....677 758 778 760 821 843 805 809 723 675 586 541
Ventrate Cat....EXL EXL EXL EXL EXL EXL EXL EXL EXL EXL GD  GD

$$
Forecaster...JLD
Requested by...Brian Stearns
Type of request...PRESCRIBED
.TAG 2515089.0/APX
.DELDT 05/31/25
.FormatterVersion 2.0.0
.EMAIL brian.stearns@usda.gov