971
FNUS53 KGRR 210745
FWFGRR

Fire Weather Planning Forecast for Southwest Lower Michigan
National Weather Service Grand Rapids MI
345 AM EDT Thu Aug 21 2025

...Dry through Friday, then cooler and wetter...

.DISCUSSION...today and Friday will be dry with temperatures
near or slightly above seasonal normals. This will be followed
by a chance for showers and thunderstorms Saturday with a cold
front. Significantly cooler air filters in on Sunday with
continued chances for rain into Monday.


MIZ037>039-043>045-212030-
Mason-Lake-Osceola-Oceana-Newaygo-Mecosta-
Including the cities of Ludington, Baldwin, Reed City, Hart,
Fremont, and Big Rapids
345 AM EDT Thu Aug 21 2025

.TODAY...
Sky/weather.........Sunny (5-15 percent).
Max temperature.....79-84.
   24 hr trend......4 degrees warmer.
Min humidity........54-59 percent near Lake Michigan and 41-46
                    percent Inland.
   24 hr trend......2 percent drier near Lake Michigan and 5
                    percent drier Inland.
20-foot winds.......Northeast winds 5 to 8 mph.
Mixing height.......3800-4300 ft AGL near Lake Michigan and
                    5900-6400 ft AGL Inland.
Transport winds.....Northeast around 10 mph.
Smoke dispersal.....530-550 (good).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Mostly clear (10-20 percent). Patchy fog after
                    4 AM until 6 AM.
Min temperature.....54-59.
   24 hr trend......2 degrees warmer.
Max humidity........95-100 percent.
   24 hr trend......Unchanged.
20-foot winds.......Light winds.
Mixing height.......800-1300 ft AGL.
Transport winds.....Northeast around 5 mph shifting to the
                    southeast overnight.
Smoke dispersal.....40-90 (poor).
Pcpn Amount.........None.

.FRIDAY...
Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....80-85.
   24 hr trend......Unchanged.
Min humidity........60-65 percent near Lake Michigan and 49-54
                    percent Inland.

   24 hr trend......7 percent wetter.

20-foot winds.......Light winds becoming west around 6 mph in the
                    afternoon.
Mixing height.......2300-2800 ft AGL near Lake Michigan and
                    4700-5200 ft AGL Inland.
Transport winds.....West 5 to 10 mph.
Smoke dispersal.....490-610 (good to excellent).
Pcpn Amount.........None.


$$

MIZ040-046-212030-
Clare-Isabella-
Including the cities of Clare and Mount Pleasant
345 AM EDT Thu Aug 21 2025

.TODAY...
Sky/weather.........Sunny (10-20 percent).
Max temperature.....Around 82.
   24 hr trend......2 degrees warmer.
Min humidity........44-49 percent.
   24 hr trend......10 percent wetter.
20-foot winds.......Northeast winds 5 to 8 mph.
Mixing height.......5600-6100 ft AGL.
Transport winds.....Northeast around 10 mph.
Smoke dispersal.....560-650 (good to excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Mostly clear (15-25 percent). Patchy fog after
                    3 AM.
Min temperature.....52-57.
   24 hr trend......1 degree warmer.
Max humidity........100 percent.
   24 hr trend......Unchanged.
20-foot winds.......Light winds.
Mixing height.......800-1300 ft AGL.
Transport winds.....Southeast around 5 mph.
Smoke dispersal.....30-80 (poor).
Pcpn Amount.........None.

.FRIDAY...
Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....Around 84.
   24 hr trend......4 degrees warmer.
Min humidity........44-49 percent.
   24 hr trend......2 percent drier.
20-foot winds.......Light winds becoming southwest around 5 mph in
                    the afternoon.
Mixing height.......5800-6300 ft AGL.
Transport winds.....West 5 to 10 mph.
Smoke dispersal.....510-670 (good to excellent).
Pcpn Amount.........None.


$$

MIZ050-056-064-071-212030-
Muskegon-Ottawa-Allegan-Van Buren-
Including the cities of Muskegon, Grand Haven, Jenison, Holland,
and South Haven
345 AM EDT Thu Aug 21 2025

.TODAY...
Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....79-84.
   24 hr trend......9 degrees warmer.
Min humidity........47-52 percent.
   24 hr trend......20 percent drier.
20-foot winds.......Northeast winds 5 to 9 mph.
Mixing height.......4400-4900 ft AGL near Lake Michigan and
                    5400-5900 ft AGL Inland.
Transport winds.....Northeast around 10 mph.
Smoke dispersal.....540-640 (good to excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Mostly clear (5-15 percent). Patchy fog after 5
                    AM.
Min temperature.....56-61.
   24 hr trend......1 degree warmer.
Max humidity........95-100 percent.
   24 hr trend......Unchanged.
20-foot winds.......Light winds.
Mixing height.......700-1200 ft AGL.
Transport winds.....Northeast around 5 mph shifting to the
                    southeast overnight.
Smoke dispersal.....30-80 (poor).
Pcpn Amount.........None.

.FRIDAY...
Sky/weather.........Sunny (15-25 percent).
Max temperature.....80-85.
   24 hr trend......1 degree warmer.
Min humidity........51-56 percent.
   24 hr trend......3 percent wetter.
20-foot winds.......Light winds becoming west around 5 mph in the
                    afternoon.
Mixing height.......2700-3200 ft AGL near Lake Michigan and
                    5100-5600 ft AGL Inland.
Transport winds.....Southwest around 5 mph shifting to the west in
                    the afternoon.
Smoke dispersal.....270-350 (fair to good).
Pcpn Amount.........None.


$$

MIZ051-052-057>059-212030-
Montcalm-Gratiot-Kent-Ionia-Clinton-
Including the cities of Greenville, Alma, Grand Rapids, Ionia,
and St. Johns
345 AM EDT Thu Aug 21 2025

.TODAY...
Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 81.
   24 hr trend......5 degrees warmer.
Min humidity........49-54 percent.
   24 hr trend......4 percent drier.
20-foot winds.......Northeast winds 5 to 10 mph.
Mixing height.......5100-5600 ft AGL.
Transport winds.....Northeast around 10 mph.
Smoke dispersal.....600-670 (excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Mostly clear (10-20 percent). Patchy fog after
                    4 AM.
Min temperature.....55-60.
   24 hr trend......1 degree cooler.
Max humidity........99 percent.
   24 hr trend......Unchanged.
20-foot winds.......East winds up to 5 mph.
Mixing height.......700-1200 ft AGL.
Transport winds.....East around 5 mph.
Smoke dispersal.....30-50 (poor).
Pcpn Amount.........None.

.FRIDAY...
Sky/weather.........Mostly sunny (20-30 percent).
Max temperature.....Around 84.
   24 hr trend......4 degrees warmer.
Min humidity........46-51 percent.
   24 hr trend......5 percent drier.
20-foot winds.......Light winds becoming southwest around 5 mph in
                    the afternoon.
Mixing height.......5400-5900 ft AGL.
Transport winds.....West around 5 mph.
Smoke dispersal.....300-490 (good).
Pcpn Amount.........None.


$$

MIZ065>067-072>074-212030-
Barry-Eaton-Ingham-Kalamazoo-Calhoun-Jackson-
Including the cities of Hastings, Charlotte, Lansing, Kalamazoo,
Battle Creek, and Jackson
345 AM EDT Thu Aug 21 2025

.TODAY...
Sky/weather.........Mostly sunny (35-45 percent).
Max temperature.....Around 80.
   24 hr trend......9 degrees warmer.
Min humidity........54-59 percent.
   24 hr trend......13 percent drier.
20-foot winds.......Northeast winds 5 to 10 mph.
Mixing height.......4700-5200 ft AGL.
Transport winds.....Northeast around 15 mph.
Smoke dispersal.....560-630 (good to excellent).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Mostly clear (5-15 percent). Patchy fog after 4
                    AM.
Min temperature.....Around 57.
   24 hr trend......2 degrees cooler.
Max humidity........100 percent.
   24 hr trend......Unchanged.
20-foot winds.......Northeast winds up to 5 mph.
Mixing height.......1100-1600 ft AGL.
Transport winds.....East 5 to 10 mph.
Smoke dispersal.....40-90 (poor).
Pcpn Amount.........None.

.FRIDAY...
Sky/weather.........Sunny (10-20 percent).
Max temperature.....Around 84.
   24 hr trend......3 degrees warmer.
Min humidity........47-52 percent.
   24 hr trend......7 percent drier.
20-foot winds.......Light winds.
Mixing height.......5200-5700 ft AGL.
Transport winds.....Southeast around 5 mph shifting to the
                    southwest in the afternoon.
Smoke dispersal.....140-220 (fair).
Pcpn Amount.........None.


$$

.FORECAST FOR DAYS 3 THROUGH 7...

.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s. Southwest
winds 5 to 8 mph.
.SATURDAY...Mostly sunny with a chance of showers and a slight
chance of thunderstorms. Highs around 80. West winds 6 to 11 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 50s. West winds 5 to
9 mph.
.SUNDAY...Sunny. Highs in the lower 70s. West winds 6 to 11 mph.
.SUNDAY NIGHT...Mostly clear. Chance of showers in the evening. Lows
in the lower 50s. West winds 5 to 9 mph.
.MONDAY...Mostly sunny. Chance of showers. Highs in the upper 60s.
Northwest winds 6 to 11 mph.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 40s.
.TUESDAY...Mostly sunny. Highs in the upper 60s.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 40s.
.WEDNESDAY...Sunny. Highs in the lower 70s.

$$