820
FNUS73 KGRR 210957
FWSGRR
SPOT FORECAST FOR MUSKEGON ROAD FUEL BREAK...MI DNR
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
557 AM EDT THU MAY 21 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON MAY 21.
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
HIGH PRESSURE CENTERED NORTH OF THE STATE TODAY AND FRIDAY WILL
BRING LOW LEVEL WINDS FROM THE EAST/NORTHEAST TODAY. 20 FT WINDS
WILL GENERALLY STAY UNDER 12 MPH TODAY, AND WILL INCREASE A BIT
ON FRIDAY. THE AIR WILL NOT BE AS DRY ON FRIDAY.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
TEMPERATURE.........48 AT IGNITION...MAX 61.
RH..................54 PERCENT AT IGNITION...MIN 25 PERCENT.
WIND (20 FT)........WINDS EAST AT 7 MPH AT IGNITION...OTHERWISE
EAST WINDS 7 TO 12 MPH.
MIXING HEIGHT.......1500 FT AGL AT IGNITION...OTHERWISE 5000 FT
AGL.
MIXING WINDS........EAST 10 TO 15 MPH.
SMOKE DISPERSAL.....225 /FAIR/ AT IGNITION. MAX...750 /EXCELLENT/.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
SKY (%).........37 41 45 50 54 54 55 55 56 56 57 55
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............48 52 54 56 58 58 58 59 58 57 55 51
RH..............54 48 45 42 39 39 37 34 34 33 34 39
20 FT WIND DIR..E E E E E E E E E E E E
20 FT WIND SPD..7 8 8 8 8 8 8 8 8 7 7 6
20 FT WIND GUST.14 14 13 14 14 14 14 14 13 13 13 12
MIX HGT (KFT)...1.5 3.2 3.9 4.2 4.5 4.6 4.9 5.0 3.7 3.3 2.3 0.7
MIXING WIND DIR.E E E E E E E E E E E E
MIXING WIND SPD.15 15 14 14 13 13 13 13 13 14 14 12
SMOKE DISPRSL...225 480 630 620 680 680 700 750 620 460 310 80
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT).
TEMPERATURE.........MIN 35.
RH..................MAX 85 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 8 MPH.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........EAST 10 TO 15 MPH.
SMOKE DISPERSAL.....550 (GOOD) EARLY IN THE EVENING DECREASING TO
60 (POOR) LATE IN THE NIGHT.
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
TEMPERATURE.........MAX 65.
RH..................MIN 34 PERCENT.
WIND (20 FT)........EAST WINDS 10 TO 15 MPH. GUSTS UP TO 25 MPH IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......3500 FT AGL.
MIXING WINDS........EAST 10 TO 15 MPH INCREASING TO 20 TO 25 MPH IN
THE AFTERNOON.
SMOKE DISPERSAL.....60 (POOR) EARLY IN THE MORNING INCREASING TO
900 (EXCELLENT) IN THE AFTERNOON.
FORECASTER...JERUZAL
REQUESTED BY...NATE STEARNS
TYPE OF REQUEST...PRESCRIBED
.TAG 2614167.0/GRR
.DELDT 05/21/26
.FORMATTERVERSION 2.0.0
.EMAIL STEARNSN@MICHIGAN.GOV
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