500
FNUS53 KGRR 110823
FWFGRR

Fire Weather Planning Forecast for Southwest Lower Michigan
National Weather Service Grand Rapids MI
423 AM EDT Mon Aug 11 2025

...Warm and Humid with Scattered Thunderstorms...

.DISCUSSION...
Uncomfortable humidity and warm temperatures continue through
Tuesday, along with an unstable atmosphere that will occasionally
pop some scattered thunderstorms. Hit or miss downpours and
isolated strong wind gusts are possible from the storms. Drier
air and near-normal temperatures are expected Wed and Thu.


MIZ037>039-043>045-112015-
Mason-Lake-Osceola-Oceana-Newaygo-Mecosta-
Including the cities of Ludington, Baldwin, Reed City, Hart,
Fremont, and Big Rapids
423 AM EDT Mon Aug 11 2025

.TODAY...
Sky/weather.........Mostly cloudy (65-75 percent) until 5 PM, then
                    mostly sunny (35-45 percent). Chance of showers
                    and thunderstorms.
Chance of pcpn......30 percent.
Max temperature.....80-85.
   24 hr trend......3 degrees cooler.
Min humidity........69-74 percent near Lake Michigan and 57-62
                    percent Inland.
   24 hr trend......3 percent wetter near Lake Michigan and 4
                    percent wetter Inland.
20-foot winds.......Southwest winds 6 to 11 mph.
Mixing height.......1900-2400 ft AGL near Lake Michigan and
                    3500-4000 ft AGL Inland.
Transport winds.....Southwest 15 to 20 mph.
Smoke dispersal.....960 (excellent).
Pcpn Amount.........None to 0.19 in.

.TONIGHT...
Sky/weather.........Partly cloudy (45-55 percent) until 5 AM, then
                    mostly cloudy (65-75 percent). Chance of
                    showers and thunderstorms after 11 PM.
Chance of pcpn......40 percent after midnight.
Min temperature.....63-68.
   24 hr trend......2 degrees cooler.
Max humidity........100 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southwest winds 5 to 6 mph.
Mixing height.......300-800 ft AGL near Lake Michigan and 1200-1700
                    ft AGL Inland.
Transport winds.....Southwest around 10 mph.
Smoke dispersal.....70-170 (poor to fair).
Pcpn Amount.........None to 0.24 in.

.TUESDAY...
Sky/weather.........Partly sunny (65-75 percent). Chance of showers
                    and thunderstorms.
Chance of pcpn......50 percent.
Max temperature.....79-84.
   24 hr trend......Unchanged.
Min humidity........65-70 percent.
   24 hr trend......11 percent wetter.
20-foot winds.......Southwest winds 6 to 11 mph.
Mixing height.......2000-2500 ft AGL near Lake Michigan and
                    3400-3900 ft AGL Inland.
Transport winds.....Southwest 15 to 20 mph.
Smoke dispersal.....550-680 (good to excellent).
Pcpn Amount.........0.05-0.18 in.


$$

MIZ040-046-112015-
Clare-Isabella-
Including the cities of Clare and Mount Pleasant
423 AM EDT Mon Aug 11 2025

.TODAY...
Sky/weather.........Partly sunny (55-65 percent). Chance of
                    showers. Chance of thunderstorms after 11 AM.
Chance of pcpn......40 percent.
Max temperature.....Around 86.
   24 hr trend......7 degrees cooler.
Min humidity........53-58 percent.
   24 hr trend......21 percent wetter.
20-foot winds.......Southwest winds 6 to 11 mph.
Mixing height.......5500-6000 ft AGL.
Transport winds.....Southwest around 20 mph.
Smoke dispersal.....1300 (excellent).
Pcpn Amount.........none to 0.04 in.

.TONIGHT...
Sky/weather.........Partly cloudy (45-55 percent). Chance of
                    showers and thunderstorms.
Chance of pcpn......40 percent.
Min temperature.....62-67.
   24 hr trend......2 degrees cooler.
Max humidity........99 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southwest winds up to 5 mph.
Mixing height.......2000-2500 ft AGL.
Transport winds.....Southwest around 10 mph.
Smoke dispersal.....60-290 (poor to fair).
Pcpn Amount.........0.01-0.11 in.

.TUESDAY...
Sky/weather.........Partly sunny (65-75 percent). Showers likely
                    until 2 PM. Chance of thunderstorms after 11
                    AM. Chance of showers after 2 PM.
Chance of pcpn......60 percent.
Max temperature.....Around 84.
   24 hr trend......1 degree cooler.
Min humidity........63-68 percent.
   24 hr trend......8 percent wetter.
20-foot winds.......Southwest winds 5 to 10 mph.
Mixing height.......3400-3900 ft AGL.
Transport winds.....Southwest 15 to 20 mph.
Smoke dispersal.....580-780 (good to excellent).
Pcpn Amount.........0.09-0.18 in.


$$

MIZ050-056-064-071-112015-
Muskegon-Ottawa-Allegan-Van Buren-
Including the cities of Muskegon, Grand Haven, Jenison, Holland,
and South Haven
423 AM EDT Mon Aug 11 2025

.TODAY...
Sky/weather.........Partly sunny (55-65 percent). Chance of showers
                    and thunderstorms.
Chance of pcpn......30 percent.
Max temperature.....82-87.
   24 hr trend......5 degrees cooler.
Min humidity........59-64 percent.
   24 hr trend......15 percent wetter.
20-foot winds.......Southwest winds 6 to 11 mph.
Mixing height.......2400-2900 ft AGL near Lake Michigan and
                    4600-5100 ft AGL Inland.
Transport winds.....Southwest 15 to 20 mph.
Smoke dispersal.....960-980 (excellent).
Pcpn Amount.........none to 0.09 in.

.TONIGHT...
Sky/weather.........Partly cloudy (50-60 percent) until 2 AM, then
                    mostly cloudy (70-80 percent). Chance of
                    showers and thunderstorms.
Chance of pcpn......50 percent.
Min temperature.....Around 70.
   24 hr trend......1 degree warmer.
Max humidity........99 percent.
   24 hr trend......Unchanged.
20-foot winds.......South winds 5 to 6 mph.
Mixing height.......1300-1800 ft AGL.
Transport winds.....Southwest 5 to 10 mph.
Smoke dispersal.....80-150 (poor to fair).
Pcpn Amount.........0.01-0.49 in.

.TUESDAY...
Sky/weather.........Partly sunny (60-70 percent). Showers likely
                    until 2 PM. Chance of thunderstorms. Chance of
                    showers after 2 PM.
Chance of pcpn......70 percent.
Max temperature.....80-85.
   24 hr trend......2 degrees cooler.
Min humidity........67-72 percent.
   24 hr trend......9 percent wetter.
20-foot winds.......Southwest winds 6 to 11 mph.
Mixing height.......2200-2700 ft AGL near Lake Michigan and
                    3800-4300 ft AGL Inland.
Transport winds.....Southwest around 15 mph.
Smoke dispersal.....700-760 (excellent).
Pcpn Amount.........0.10-0.76 in.


$$

MIZ051-052-057>059-112015-
Montcalm-Gratiot-Kent-Ionia-Clinton-
Including the cities of Greenville, Alma, Grand Rapids, Ionia,
and St. Johns
423 AM EDT Mon Aug 11 2025

.TODAY...
Sky/weather.........Partly sunny (50-60 percent). Chance of showers
                    and thunderstorms.
Chance of pcpn......30 percent.
Max temperature.....85-90.
   24 hr trend......4 degrees cooler.
Min humidity........52-57 percent.
   24 hr trend......10 percent wetter.
20-foot winds.......Southwest winds 7 to 12 mph.
Mixing height.......5600-6100 ft AGL.
Transport winds.....Southwest around 20 mph.
Smoke dispersal.....1270-1380 (excellent).
Pcpn Amount.........None to 0.24 in.

.TONIGHT...
Sky/weather.........Partly cloudy (45-55 percent) until 5 AM, then
                    mostly cloudy (70-80 percent). Chance of
                    showers and thunderstorms.
Chance of pcpn......40 percent.
Min temperature.....Around 69.
   24 hr trend......1 degree cooler.
Max humidity........95-100 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southwest winds 5 to 7 mph.
Mixing height.......1600-2100 ft AGL.
Transport winds.....Southwest around 10 mph.
Smoke dispersal.....70-230 (poor to fair).
Pcpn Amount.........0.01-0.39 in.

.TUESDAY...
Sky/weather.........Partly sunny (60-70 percent). Showers likely
                    and a chance of thunderstorms.
Chance of pcpn......70 percent.
Max temperature.....Around 84.
   24 hr trend......3 degrees cooler.
Min humidity........65-70 percent.
   24 hr trend......15 percent wetter.
20-foot winds.......Southwest winds 7 to 12 mph. Gusts up to 20 mph
                    in the afternoon.
Mixing height.......3700-4200 ft AGL.
Transport winds.....Southwest 15 to 20 mph.
Smoke dispersal.....610-820 (excellent).
Pcpn Amount.........0.13-0.87 in.


$$

MIZ065>067-072>074-112015-
Barry-Eaton-Ingham-Kalamazoo-Calhoun-Jackson-
Including the cities of Hastings, Charlotte, Lansing, Kalamazoo,
Battle Creek, and Jackson
423 AM EDT Mon Aug 11 2025

.TODAY...
Sky/weather.........Partly sunny (45-55 percent). Chance of showers
                    after 11 AM. Chance of thunderstorms after 2
                    PM.
Chance of pcpn......30 percent.
Max temperature.....85-90.
   24 hr trend......3 degrees cooler.
Min humidity........52-57 percent.
   24 hr trend......5 percent wetter.
20-foot winds.......Southwest winds 6 to 11 mph.
Mixing height.......6000-6500 ft AGL.
Transport winds.....Southwest around 20 mph.
Smoke dispersal.....1300-1320 (excellent).
Pcpn Amount.........None to 0.40 in.

.TONIGHT...
Sky/weather.........Partly cloudy (55-65 percent) until 2 AM, then
                    mostly cloudy (70-80 percent). Chance of
                    showers and thunderstorms.
Chance of pcpn......50 percent.
Min temperature.....Around 70.
   24 hr trend......1 degree cooler.
Max humidity........99 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southwest winds 5 to 6 mph.
Mixing height.......1300-1800 ft AGL.
Transport winds.....Southwest around 10 mph.
Smoke dispersal.....60-130 (poor to fair).
Pcpn Amount.........None to 0.57 in.

.TUESDAY...
Sky/weather.........Partly sunny (60-70 percent). Showers and a
                    chance of thunderstorms.
Chance of pcpn......80 percent.
Max temperature.....82-87.
   24 hr trend......3 degrees cooler.
Min humidity........65-70 percent.
   24 hr trend......15 percent wetter.
20-foot winds.......Southwest winds 6 to 11 mph.
Mixing height.......3900-4400 ft AGL.
Transport winds.....Southwest around 15 mph.
Smoke dispersal.....790-840 (excellent).
Pcpn Amount.........0.25-1.27 in.


$$

.FORECAST FOR DAYS 3 THROUGH 7...

.TUESDAY NIGHT...Partly cloudy. Chance of showers and a slight
chance of thunderstorms in the evening. Lows in the mid 60s. West
winds 5 to 9 mph.
.WEDNESDAY...Sunny. Highs in the lower 80s. Northwest winds 5 to
10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. North winds
5 to 6 mph.
.THURSDAY...Sunny. Highs in the lower 80s. Northeast winds 5 to
8 mph.
.THURSDAY NIGHT...Mostly clear. Lows in the upper 50s. Southeast
winds 5 to 8 mph.
.FRIDAY...Sunny. Highs in the upper 80s. South winds 5 to 9 mph.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the upper 80s.
.SATURDAY NIGHT...Partly cloudy. Lows in the upper 60s.
.SUNDAY...Mostly sunny. Chance of showers in the afternoon. Highs in
the upper 80s.

$$