509
FNUS73 KGRR 200935
FWSGRR
SPOT FORECAST FOR EAGLE LAKE PRAIRIE...MDNR
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
535 AM EDT MON APR 20 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON APRIL 20.
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
TEMPERATURES WILL BE ABOUT 10 DEGREES BELOW NORMAL UNDER SUNNY
SKIES, AND LOW DEW POINTS WILL SUPPORT RELATIVE HUMIDITY DROPPING
TOWARD ABOUT 30 PERCENT DURING THE AFTERNOON. THE CENTER OF HIGH
PRESSURE OVER LOWER MICHIGAN THIS MORNING WILL MOVE EAST, MAKING
FOR LIGHT AND VARIABLE WINDS THIS MORNING BECOMING MORE
ESTABLISHED FROM THE WEST DURING THE AFTERNOON WITH SOME NORTHWEST
OR SOUTHWEST DIRECTION VARIABILITY STILL POSSIBLE DUE TO THE LOW
WIND SPEED. MIXING AND VENTILATION ARE FAVORED TO BE GOOD.
REST OF TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
TEMPERATURE.........38 AT IGNITION...MAX 49.
RH..................40 PERCENT AT IGNITION...MIN 31 PERCENT.
WIND (20 FT)........WINDS NORTHWEST AT 2 MPH AT
IGNITION...OTHERWISE LIGHT WINDS BECOMING WEST
5 TO 6 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......4600 FT AGL AT IGNITION...OTHERWISE 6100 FT
AGL.
SMOKE DISPERSAL.....370 /GOOD/ AT IGNITION. MAX...560 /GOOD/.
TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P
SKY (%).........1 2 10 24 10 8 10 15 17 20 25 15
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............38 40 43 45 46 48 48 49 47 47 42 40
RH..............40 37 32 32 32 31 33 33 37 40 48 55
20 FT WIND DIR..NW NW NW W W W W W W W S S
20 FT WIND SPD..2 2 3 3 5 6 6 5 3 2 2 3
20 FT WIND GUST.7 8 9 10 10 12 13 10 8 6 7 8
MIX HGT (KFT)...4.6 5.6 6.0 6.0 6.1 6.1 6.1 5.6 4.8 0.6 0.5 0.4
SMOKE DISPRSL...370 510 550 560 490 490 560 520 440 30 10 30
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
TEMPERATURE.........MIN 36.
RH..................MAX 64 PERCENT.
WIND (20 FT)........WEST WINDS AROUND 5 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING SOUTH 5 TO 9 MPH
LATE IN THE EVENING.
MIXING HEIGHT.......400 FT AGL.
SMOKE DISPERSAL.....520 (GOOD) EARLY IN THE EVENING DECREASING TO
10 (POOR) LATE IN THE NIGHT.
TUESDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
TEMPERATURE.........MAX 71.
RH..................MIN 45 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 9 TO 13 MPH INCREASING TO 12 TO
13 MPH LATE IN THE AFTERNOON. GUSTS UP TO 24
MPH.
MIXING HEIGHT.......4400 FT AGL.
SMOKE DISPERSAL.....110 (POOR) EARLY IN THE MORNING INCREASING TO
1160 (EXCELLENT) IN THE AFTERNOON.
FORECASTER...SCHOLTEN
REQUESTED BY...650
TYPE OF REQUEST...PRESCRIBED
.TAG 2610759.0/GRR
.DELDT 04/20/26
.FORMATTERVERSION 2.0.0
.EMAIL CORSERJ@MICHIGAN.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page