913
FNUS73 KGRR 280931
FWSGRR
SPOT FORECAST FOR FIREWHEELS...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
531 AM EDT TUE APR 28 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON APRIL 28.
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
ANY LIGHT SHOWERS OR SPRINKLES EARLY THIS MORNING WILL END. SKIES WILL
REMAIN MOSTLY CLOUDY FOR MOST OF THE DAY, BEFORE SOME PARTIAL CLEARING
TAKES PLACE THIS EVENING. TEMPERATURES WILL REMAIN MUCH COOLER TODAY,
AND FOR THE NEXT FEW DAYS.
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
MOSTLY SUNNY (45-55 PERCENT).
TEMPERATURE.........49 AT IGNITION...MAX 57.
RH..................94 PERCENT AT IGNITION...MIN 54 PERCENT.
WIND (20 FT)........WINDS WEST AT 12 TO 17 MPH AT IGNITION...OTHERWISE
WEST WINDS 12 TO 17 MPH WITH GUSTS TO AROUND 25
MPH.
MIXING HEIGHT.......2500 FT AGL AT IGNITION...OTHERWISE 3500 FT
AGL.
MIXING WINDS........WEST 22 TO 27 MPH.
SMOKE DISPERSAL.....620 /EXCELLENT/ AT IGNITION. MAX...875 /EXCELLENT/.
TIME (EDT) 10 AM NOON 2 PM 4 PM 6 PM 8 PM
SKY (%).........84 86 80 59 46 44
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
TEMP............49 52 54 57 57 54
RH..............94 69 61 54 54 57
20 FT WIND......W 12 W 12 W 12 W 10 W 8 W 5
20 FT WIND GUST.25 25 25 25 22 13
MIX HGT (FT)....2500 2900 3100 3500 3300 1400
MIXING WIND.....W 25 W 25 W 25 W 25 W 22 W 13
SMOKE DISPRSL...620 700 720 875 740 170
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT).
TEMPERATURE.........MIN 40.
RH..................MAX 85 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 8 MPH EARLY IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......600 FT AGL.
MIXING WINDS........WEST 13 TO 20 MPH SHIFTING TO THE NORTH 9 TO 10
MPH LATE IN THE EVENING, THEN SHIFTING TO THE
NORTHEAST 8 TO 13 MPH OVERNIGHT.
SMOKE DISPERSAL.....740 (EXCELLENT) EARLY IN THE EVENING DECREASING
TO 50 (POOR) LATE IN THE NIGHT.
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
MOSTLY SUNNY (35-45 PERCENT).
TEMPERATURE.........MAX 53.
RH..................MIN 39 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 7 MPH IN THE
LATE MORNING AND EARLY AFTERNOON, THEN SHIFTING
TO THE NORTHWEST 7 TO 8 MPH LATE IN THE
AFTERNOON.
MIXING HEIGHT.......6000 FT AGL.
MIXING WINDS........NORTHEAST 6 TO 10 MPH SHIFTING TO THE NORTH 10
TO 16 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....30 (POOR) EARLY IN THE MORNING INCREASING TO
920 (EXCELLENT) IN THE AFTERNOON.
FORECASTER...JERUZAL
REQUESTED BY...DEAN CHAMBERS
TYPE OF REQUEST...PRESCRIBED
.TAG 2611867.0/GRR
.DELDT 04/28/26
.FORMATTERVERSION 2.0.0
.EMAIL DEAN.CHAMBERS@USDA.GOV
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