832
FNUS73 KGRR 090930
FWSGRR

Spot Forecast for Boardwalk...USFS
National Weather Service Grand Rapids MI
530 AM EDT Sat May 9 2026

Forecast is based on ignition time of 1000 EDT on May 09.
If conditions become unrepresentative, contact the National Weather
Service.

Please contact our office at (616) 949-5150, if you have questions
or concerns with this forecast.

.DISCUSSION...
Relative humidity will drop to a minimum of around 40 percent this
afternoon. There will be a slight chance of showers late in the
afternoon as a cold front moves through.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of
                    rain showers late in the afternoon.
Temperature.........54 at ignition...Max 61.
RH..................59 percent at ignition...Min 41 percent.
Wind (20 ft)........Winds west at 7 mph at ignition...otherwise
                    West winds 7 to 8 mph. Gusts up to 20 mph late
                    in the afternoon.
Mixing height.......1800 ft AGL at ignition...otherwise 4200 ft
                    AGL.
Mixing winds........West 15 to 22 mph.
Smoke dispersal.....290 /fair/ at ignition. Max...930 /excellent/.

TIME (EDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
Sky (%).........71  77  80  86  74  64  68  67  54  45  42  18
Weather cov.....                            SCH SCH SCH
Weather type....                            RW  RW  RW
Tstm cov........
Temp............54  55  57  58  58  59  60  59  59  57  54  50
RH..............59  55  49  45  44  42  41  44  44  47  52  58
20 FT wind dir..W   W   W   W   W   W   W   W   W   NW  N   N
20 FT wind spd..7   7   7   7   7   8   8   8   8   7   5   3
20 FT wind gust.17  17  17  17  17  18  20  20  18  17  14  12
Mix hgt (kft)...1.8 1.9 3.5 3.5 3.8 4.1 4.2 4.1 4.1 3.5 2.0 0.7
Mixing wind dir.W   W   W   W   W   W   W   NW  NW  NW  N   N
Mixing wind spd.16  15  20  21  22  22  22  21  21  17  15  12
Smoke disprsl...290 290 690 720 820 900 930 850 860 600 300 80

.TONIGHT...

Sky/weather.........Mostly cloudy (50-60 percent) then becoming
                    partly cloudy (25-35 percent). Slight chance of
                    rain showers early in the evening. Areas of
                    frost early in the morning.
Temperature.........Min 36.
RH..................Max 82 percent.
Wind (20 ft)........Northwest winds 7 to 8 mph shifting to the
                    north around 5 mph early in the evening, then
                    becoming light in the late evening and
                    overnight.
Mixing height.......400 ft AGL.
Mixing winds........Northwest 15 to 21 mph becoming west 5 to 6
                    mph.
Smoke dispersal.....860 (excellent) early in the evening decreasing
                    to 20 (poor) late in the night.

.SUNDAY...

Sky/weather.........Mostly sunny (30-40 percent). Areas of frost
                    early in the morning.
Temperature.........Max 54.
RH..................Min 38 percent.
Wind (20 ft)........Light winds becoming northwest 5 to 8 mph with
                    gusts to around 20 mph in the late morning and
                    afternoon, then increasing to around 8 mph late
                    in the afternoon.
Mixing height.......7000 ft AGL.
Mixing winds........West 6 to 15 mph shifting to the northwest 17
                    to 20 mph late in the morning.
Smoke dispersal.....20 (poor) early in the morning increasing to
                    1030 (excellent) in the afternoon increasing to
                    1180 (excellent) in the afternoon.

$$
Forecaster...Ostuno
Requested by...Joe Raspotnik
Type of request...PRESCRIBED
.TAG 2613170.0/GRR
.DELDT 05/09/26
.FormatterVersion 2.0.0
.EMAIL Joeseph.Raspotnik@usda.gov,Brian.stearns@usda.gov,Dean.chambers@usda.gov