347
FNUS73 KGRR 081054
FWSGRR
SPOT FORECAST FOR SER 439S...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
654 AM EDT THU OCT 8 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON OCTOBER 08.
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
WINDS WILL MIX OUT MID TO LATE MORNING OUT OF THE NORTHWEST 7 TO 10 MPH.
GUSTS UPWARDS OF 25 MPH WILL BE POSSIBLE AROUND NOON. NO PRECIPITATION
EXPECTED WITH MAINLY CLEAR SKIES THROUGH FRIDAY. WINDS WILL DECREASE
SHORTLY AFTER SUNSET AND INVERSION SETTLES IN. PATCHY FROST WILL BE
POSSIBLE FRIDAY MORNING.
REST OF TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
TEMPERATURE.........54 AT IGNITION...MAX 64.
RH..................74 PERCENT AT IGNITION...MIN 48 PERCENT.
WIND (20 FT)........WINDS NORTHWEST AT 7 MPH AT
IGNITION...OTHERWISE NORTHWEST WINDS 7 TO 10
MPH. GUSTS UP TO 24 MPH IN THE LATE MORNING AND
AFTERNOON.
MIXING HEIGHT.......600 FT AGL AT IGNITION...OTHERWISE 5700 FT AGL.
MIXING WINDS........WEST 9 TO 14 MPH INCREASING TO 20 TO 22 MPH
LATE IN THE MORNING.
SMOKE DISPERSAL.....50 /POOR/ AT IGNITION. MAX...1090 /EXCELLENT/
INCREASING TO 960 (EXCELLENT) IN THE AFTERNOON.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM
SKY (%).........2 2 5 5 8 18 41 30 20 22 11 10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............54 59 61 62 61 63 62 62 63 61 59 57
RH..............74 67 62 58 58 50 52 50 48 51 57 64
20 FT WIND DIR..NW NW NW NW NW NW NW W W W W W
20 FT WIND SPD..7 8 9 10 10 10 10 10 9 7 5 2
20 FT WIND GUST.18 21 22 22 23 24 24 24 23 20 14 12
MIX HGT (KFT)...0.6 1.5 4.3 5.3 5.7 5.6 5.3 5.1 4.9 3.4 0.9 0.5
MIXING WIND DIR.W W W W W W W W W W W W
MIXING WIND SPD.9 14 20 21 22 22 21 21 20 15 12 9
SMOKE DISPRSL...50 210 850 10901240123011001060960 510 100 40
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
TEMPERATURE.........MIN 47.
RH..................MAX 89 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 7 MPH WITH GUSTS TO AROUND 20
MPH BECOMING LIGHT.
MIXING HEIGHT.......400 FT AGL.
MIXING WINDS........WEST 7 TO 15 MPH SHIFTING TO THE NORTH 6 TO 7
MPH AFTER 3 AM.
SMOKE DISPERSAL.....510 (GOOD) EARLY IN THE EVENING DECREASING TO
20 (POOR) LATE IN THE NIGHT.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
TEMPERATURE.........MAX 68.
RH..................MIN 49 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 6 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......4400 FT AGL.
MIXING WINDS........SOUTH 5 TO 10 MPH.
SMOKE DISPERSAL.....20 (POOR) EARLY IN THE MORNING INCREASING TO
450 (GOOD) IN THE AFTERNOON.
FORECASTER...CERU
REQUESTED BY...KORY BORGMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 2623380.0/GRR
.DELDT 10/08/26
.FORMATTERVERSION 2.0.0
.EMAIL KORY.BORGMAN@USDA.GOV
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