472
FNUS53 KGRR 120817
FWFGRR

Fire Weather Planning Forecast for Southwest Lower Michigan
National Weather Service Grand Rapids MI
417 AM EDT Sun Oct 12 2025

...Dry Conditions Continue...

.DISCUSSION...

Chances for rain are limited through the upcoming week. There is a 20
percent chance Tuesday night for southwest Michigan, but current
trends show that we`ll likely stay dry. Minimum relative humidity
values are expected to be in the 40s and 50s with high temperatures
in the 60s to low 70s. A cold front Tuesday night into Wednesday will
bring in drier air with minimum relative humidity values in the 30s
and 40s and 30s potentially down into the 20s on Thursday. Winds will
remain in the 5 to 15 mph range through the week. Our next chance for
rain moves in Friday/Friday night.


MIZ037>039-043>045-122030-
Mason-Lake-Osceola-Oceana-Newaygo-Mecosta-
Including the cities of Ludington, Baldwin, Reed City, Hart,
Fremont, and Big Rapids
417 AM EDT Sun Oct 12 2025

.TODAY...
Sky/weather.........Partly sunny (50-60 percent) until 12 PM, then
                    sunny (5-15 percent). Patchy fog after 7 AM
                    until 10 AM.
Max temperature.....Around 67.
   24 hr trend......9 degrees warmer.
Min humidity........42-47 percent.
   24 hr trend......19 percent drier.
20-foot winds.......Southeast winds 5 to 10 mph.
Mixing height.......1100-1600 ft AGL increasing to 3700-4200 ft AGL
                    in the afternoon.
Transport winds.....Southeast 10 to 15 mph.
Smoke dispersal.....210-680 (fair to excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Partly cloudy (30-40 percent).
Min temperature.....43-48.
   24 hr trend......9 degrees warmer.
Max humidity........98 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southeast winds 5 to 9 mph.
Mixing height.......2900-3400 ft AGL decreasing to 400-900 ft AGL
                    after midnight.
Transport winds.....Southeast 10 to 15 mph.
Smoke dispersal.....100-570 (poor to good).
Pcpn Amount.........None.

.COLUMBUS DAY...
Sky/weather.........Partly sunny (55-65 percent).
Max temperature.....67-72.
   24 hr trend......3 degrees warmer.
Min humidity........63-68 percent near Lake Michigan and 47-52
                    percent Inland.
   24 hr trend......23 percent wetter near Lake Michigan and 6
                    percent wetter Inland.
20-foot winds.......South winds 5 to 8 mph.
Mixing height.......Near Lake Michigan, 1700-2200 ft AGL.
Mixing height.......Inland, 900-1400 ft AGL increasing to 3100-3600
                    ft AGL in the afternoon.
Transport winds.....South around 10 mph.
Smoke dispersal.....160-360 (fair to good).
Pcpn Amount.........None.


$$

MIZ040-046-122030-
Clare-Isabella-
Including the cities of Clare and Mount Pleasant
417 AM EDT Sun Oct 12 2025

.TODAY...
Sky/weather.........Partly sunny (45-55 percent) until 3 PM, then
                    sunny (5-15 percent). Patchy fog after 7 AM
                    until 11 AM.
Max temperature.....Around 67.
   24 hr trend......7 degrees warmer.
Min humidity........48-53 percent.
   24 hr trend......6 percent drier.
20-foot winds.......Light winds becoming southeast around 7 mph in
                    the afternoon.
Mixing height.......1200-1700 ft AGL increasing to 3600-4100 ft AGL
                    in the afternoon.
Transport winds.....Southeast 10 to 15 mph.
Smoke dispersal.....210-650 (fair to excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Partly cloudy (35-45 percent).
Min temperature.....42-47.
   24 hr trend......5 degrees warmer.
Max humidity........100 percent.
   24 hr trend......Unchanged.
20-foot winds.......East winds around 6 mph in the evening becoming
                    light.
Mixing height.......2400-2900 ft AGL.
Transport winds.....Southeast around 10 mph.
Smoke dispersal.....80-360 (poor to good).
Pcpn Amount.........None.

.COLUMBUS DAY...
Sky/weather.........Partly sunny (50-60 percent).
Max temperature.....Around 71.
   24 hr trend......4 degrees warmer.
Min humidity........47-52 percent.
   24 hr trend......5 percent wetter.
20-foot winds.......Southeast winds 5 to 6 mph.
Mixing height.......500-1000 ft AGL increasing to 3900-4400 ft AGL
                    in the afternoon.
Transport winds.....South around 10 mph.
Smoke dispersal.....100-320 (poor to good).
Pcpn Amount.........None.


$$

MIZ050-056-064-071-122030-
Muskegon-Ottawa-Allegan-Van Buren-
Including the cities of Muskegon, Grand Haven, Jenison, Holland,
and South Haven
417 AM EDT Sun Oct 12 2025

.TODAY...
Sky/weather.........Sunny (20-30 percent). Patchy fog after 8 AM
                    until 10 AM.
Max temperature.....65-70.
   24 hr trend......9 degrees warmer.
Min humidity........42-47 percent.
   24 hr trend......22 percent drier.
20-foot winds.......Light winds becoming southeast around 8 mph in
                    the afternoon.
Mixing height.......800-1300 ft AGL increasing to 3900-4400 ft AGL
                    in the afternoon.
Transport winds.....Southeast 10 to 15 mph.
Smoke dispersal.....130-620 (fair to excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent).
Min temperature.....47-52.
   24 hr trend......5 degrees warmer.
Max humidity........98 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southeast winds 5 to 9 mph.
Mixing height.......2700-3200 ft AGL decreasing to 700-1200 ft AGL
                    after midnight.
Transport winds.....Southeast around 10 mph.
Smoke dispersal.....80-440 (poor to good).
Pcpn Amount.........None.

.COLUMBUS DAY...
Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....69-74.
   24 hr trend......4 degrees warmer.
Min humidity........48-53 percent.
   24 hr trend......6 percent wetter.
20-foot winds.......Southeast winds around 5 mph shifting to the
                    southwest in the afternoon.
Mixing height.......Near Lake Michigan, 2200-2700 ft AGL.
Mixing height.......Inland, 700-1200 ft AGL increasing to 3800-4300
                    ft AGL in the afternoon.
Transport winds.....South 5 to 10 mph.
Smoke dispersal.....100-280 (poor to fair).
Pcpn Amount.........None.


$$

MIZ051-052-057>059-122030-
Montcalm-Gratiot-Kent-Ionia-Clinton-
Including the cities of Greenville, Alma, Grand Rapids, Ionia,
and St. Johns
417 AM EDT Sun Oct 12 2025

.TODAY...
Sky/weather.........Partly sunny (55-65 percent) until 12 PM, then
                    sunny (15-25 percent). Areas of fog until 11
                    AM.
Max temperature.....Around 68.
   24 hr trend......9 degrees warmer.
Min humidity........47-52 percent.
   24 hr trend......14 percent drier.
20-foot winds.......Light winds becoming southeast around 8 mph in
                    the afternoon.
Mixing height.......800-1300 ft AGL increasing to 4000-4500 ft AGL
                    in the afternoon.
Transport winds.....Southeast 10 to 15 mph.
Smoke dispersal.....130-650 (fair to excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent).
Min temperature.....45-50.
   24 hr trend......5 degrees warmer.
Max humidity........100 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southeast winds 5 to 8 mph.
Mixing height.......2100-2600 ft AGL.
Transport winds.....Southeast around 10 mph.
Smoke dispersal.....100-300 (poor to good).
Pcpn Amount.........None.

.COLUMBUS DAY...
Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....Around 73.
   24 hr trend......4 degrees warmer.
Min humidity........44-49 percent.
   24 hr trend......3 percent wetter.
20-foot winds.......Light winds becoming south around 5 mph in the
                    afternoon.
Mixing height.......600-1100 ft AGL increasing to 4100-4600 ft AGL
                    in the afternoon.
Transport winds.....South around 5 mph.
Smoke dispersal.....90-300 (poor to good).
Pcpn Amount.........None.


$$

MIZ065>067-072>074-122030-
Barry-Eaton-Ingham-Kalamazoo-Calhoun-Jackson-
Including the cities of Hastings, Charlotte, Lansing, Kalamazoo,
Battle Creek, and Jackson
417 AM EDT Sun Oct 12 2025

.TODAY...
Sky/weather.........Mostly sunny (25-35 percent). Patchy fog until
                    10 AM.
Max temperature.....Around 69.
   24 hr trend......9 degrees warmer.
Min humidity........45-50 percent.
   24 hr trend......15 percent drier.
20-foot winds.......Light winds becoming east around 7 mph in the
                    afternoon.
Mixing height.......1200-1700 ft AGL increasing to 4300-4800 ft AGL
                    in the afternoon.
Transport winds.....East 10 to 15 mph.
Smoke dispersal.....160-740 (fair to excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent).
Min temperature.....Around 47.
   24 hr trend......7 degrees warmer.
Max humidity........100 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southeast winds 5 to 8 mph.
Mixing height.......3100-3600 ft AGL decreasing to 700-1200 ft AGL
                    after midnight.
Transport winds.....Southeast around 10 mph.
Smoke dispersal.....90-510 (poor to good).
Pcpn Amount.........None.

.COLUMBUS DAY...
Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....Around 73.
   24 hr trend......4 degrees warmer.
Min humidity........43-48 percent.
   24 hr trend......2 percent wetter.
20-foot winds.......Southeast winds 5 to 7 mph.
Mixing height.......700-1200 ft AGL increasing to 4800-5300 ft AGL
                    in the afternoon.
Transport winds.....South around 5 mph.
Smoke dispersal.....60-230 (poor to fair).
Pcpn Amount.........None.


$$

.FORECAST FOR DAYS 3 THROUGH 7...

.MONDAY NIGHT...Partly cloudy. Lows around 50. Northwest winds up to
5 mph in the evening becoming light.
.TUESDAY...Mostly sunny. Highs in the upper 60s. North winds 5 to
10 mph.
.TUESDAY NIGHT...Partly cloudy. Lows in the lower 40s. North winds
5 to 9 mph.
.WEDNESDAY...Mostly sunny. Highs around 60. North winds 5 to 9 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 30s. North winds
5 to 6 mph in the evening becoming light.
.THURSDAY...Sunny. Highs in the lower 60s. Light winds becoming west
5 to 7 mph in the afternoon.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 40s.
.FRIDAY...Partly sunny. Highs in the lower 60s.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers. Lows in the
upper 40s.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 60s.

$$