483
FNUS73 KGRR 181259
FWSGRR
SPOT FORECAST FOR PEACOCK 545...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
759 AM EST THU DEC 18 2025
FORECAST IS BASED ON IGNITION TIME OF 1000 EST ON DECEMBER 18.
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
STRONG SOUTHERLY FLOW WITH RAIN SHOWERS WILL DOMINATE THE DAY WITH
PERIODS OF SHOWERS THROUGH OUT THE DAY. EXPECT CLOUDY SKIES WITH
DRIZZLE THIS MORNING. SHIFTING TO RAIN MID MORNING.
TEMPS WILL RISE INTO THE 40S BY IGNITIONS TIME.
BIGGEST CONCERN WILL BE WINDS WHICH WILL INCREASE AS THE MORNING
CONTINUES AND WILL BE FROM THE SOUTH AT 15 GUSTING TO 30 BY IGNITION TIME
AND CONTINUE THROUGHOUT THE DAY. GUSTS AS HIGH AS 40 WILL BE POSSIBLE
RAIN SHOWERS WILL TRANSITION TO SNOW SHOWERS OVERNIGHT TONIGHT WITH
WINDS SHIFTING TO THE NORTHWEST TONIGHT. SNOW ACCUMULATIONS OF 2 TO 4
INCHES WILL BE POSSIBLE TONIGHT INTO FRIDAY MORNING.
REST OF TODAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT). PATCHY FOG IN THE LATE
MORNING AND EARLY AFTERNOON. RAIN SHOWERS
LIKELY LATE IN THE MORNING. RAIN SHOWERS IN THE
AFTERNOON.
TEMPERATURE.........40 AT IGNITION...MAX 44.
RH..................100 PERCENT AT IGNITION...MIN 79 PERCENT.
WIND (20 FT)........WINDS SOUTH AT 12 MPH AT IGNITION...OTHERWISE
SOUTH WINDS 10 TO 12 MPH WITH GUSTS TO AROUND
33 MPH.
MIXING HEIGHT.......900 FT AGL AT IGNITION...OTHERWISE 1100 FT AGL.
MIXING WINDS........SOUTH 17 TO 21 MPH.
SMOKE DISPERSAL.....180 /FAIR/ AT IGNITION. MAX...230 /FAIR/.
TIME (EST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
SKY (%).........91 93 92 92 91 89 90 85 94 90 94 87
WEATHER COV.....LKY LKY DEF LKY DEF DEF LKY LKY CHC DEF DEF DEF
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RS
TSTM COV........
TEMP............40 42 43 43 44 44 44 43 43 40 38 35
RH..............100 96 92 95 90 87 83 82 79 83 86 86
20 FT WIND DIR..S S S S S S S SW SW SW W W
20 FT WIND SPD..12 12 12 12 12 12 12 10 9 10 10 10
20 FT WIND GUST.28 29 31 33 28 29 28 26 23 22 26 22
MIX HGT (KFT)...0.9 1.1 1.1 1.1 1.1 1.1 1.0 0.9 0.5 0.5 0.6 0.6
MIXING WIND DIR.S S S S S S S SW SW W W W
MIXING WIND SPD.20 21 21 21 21 21 21 17 16 15 18 18
SMOKE DISPRSL...180 220 220 230 220 230 200 150 80 70 100 100
TONIGHT
SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF RAIN SHOWERS
EARLY IN THE EVENING, THEN RAIN SHOWERS EARLY
IN THE EVENING. SNOW SHOWERS IN THE LATE
EVENING AND OVERNIGHT. PATCHY FOG EARLY IN THE
EVENING. PATCHY FOG AFTER 3 AM.
TEMPERATURE.........MIN 15.
RH..................MAX 97 PERCENT.
WIND (20 FT)........WEST WINDS 9 TO 12 MPH WITH GUSTS TO AROUND 26
MPH INCREASING TO AROUND 12 MPH WITH GUSTS TO
AROUND 33 MPH AFTER 3 AM.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........WEST 15 TO 23 MPH INCREASING TO 22 TO 25 MPH
AFTER 3 AM.
SMOKE DISPERSAL.....320 (GOOD) EARLY IN THE EVENING DECREASING TO
70 (POOR) LATE IN THE NIGHT.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). PATCHY FOG EARLY
IN THE MORNING. SNOW SHOWERS EARLY IN THE
MORNING. CHANCE OF SNOW SHOWERS IN THE MORNING.
TEMPERATURE.........MAX 23.
RH..................MIN 67 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 8 TO 15 MPH. GUSTS UP TO 30 MPH
EARLY IN THE MORNING INCREASING TO 39 MPH, THEN
DECREASING TO 28 MPH EARLY IN THE AFTERNOON.
MIXING HEIGHT.......3800 FT AGL.
MIXING WINDS........NORTHWEST 23 TO 32 MPH DECREASING TO AROUND 18
MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....160 (FAIR) EARLY IN THE MORNING INCREASING TO
1230 (EXCELLENT) IN THE AFTERNOON.
FORECASTER...CERU
REQUESTED BY...WELLSTON RD
TYPE OF REQUEST...PRESCRIBED
.TAG 2527919.0/GRR
.DELDT 12/18/25
.FORMATTERVERSION 2.0.0
.EMAIL RICHARD.W.DAVIS@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page