Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Grand Rapids, MI
Issued by NWS Grand Rapids, MI
572
FNUS53 KGRR 180806
FWFGRR
Fire Weather Planning Forecast for Southwest Lower Michigan
National Weather Service Grand Rapids MI
406 AM EDT Tue Aug 18 2026
...Showers and storms expected this afternoon and tonight...
.DISCUSSION...
Showers and thunderstorms will move through the area bringing
generally one or two tenths of an inch of rain. Most of
Wednesday and all of Thursday will be dry with temperatures
near or slightly below normal. The next chance for rain will
be Friday.
MIZ037>039-043>045-182045-
Mason-Lake-Osceola-Oceana-Newaygo-Mecosta-
Including the cities of Ludington, Baldwin, Reed City, Hart,
Fremont, and Big Rapids
406 AM EDT Tue Aug 18 2026
.TODAY...
Sky/weather.........Partly sunny (50-60 percent). Chance of rain
showers and a slight chance of thunderstorms
after 2 PM.
Chance of pcpn......50 percent in the afternoon.
Max temperature.....79-84.
24 hr trend......1 degree warmer.
Min humidity........60-65 percent near Lake Michigan and 49-54
percent Inland.
24 hr trend......17 percent wetter near Lake Michigan and 14
percent wetter Inland.
20-foot winds.......Southwest winds 7 to 12 mph. Gusts up to 23 mph
in the afternoon.
Mixing height.......2500-3000 ft AGL near Lake Michigan and
4600-5100 ft AGL Inland.
Transport winds.....West 10 to 15 mph.
Smoke dispersal.....580-1010 (good to excellent).
Pcpn Amount.........None to 0.14 in.
.TONIGHT...
Sky/weather.........Partly cloudy (60-70 percent) until 9 PM, then
mostly cloudy (70-80 percent) until 12 AM, then
partly cloudy (50-60 percent). Rain showers
likely until 12 AM. Chance of thunderstorms.
Chance of rain showers after 12 AM.
Chance of pcpn......60 percent until early morning.
Min temperature.....52-57.
24 hr trend......2 degrees warmer.
Max humidity........95-100 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds around 8 mph in the evening becoming
light.
Mixing height.......1400-1900 ft AGL near Lake Michigan and
2500-3000 ft AGL Inland.
Transport winds.....West around 10 mph shifting to the northwest
after midnight.
Smoke dispersal.....80-640 (poor to excellent).
Pcpn Amount.........0.04-0.17 in.
.WEDNESDAY...
Sky/weather.........Sunny (10-20 percent).
Max temperature.....75-80.
24 hr trend......2 degrees cooler.
Min humidity........35-40 percent.
24 hr trend......15 percent drier.
20-foot winds.......Light winds becoming northwest around 7 mph in
the afternoon.
Mixing height.......Near Lake Michigan, 2200-2700 ft AGL increasing
to 4800-5300 ft AGL in the afternoon.
Mixing height.......Inland, 3100-3600 ft AGL increasing to
7800-8300 ft AGL in the afternoon.
Transport winds.....North around 5 mph shifting to the northwest in
the afternoon.
Smoke dispersal.....280 (fair) increasing to 970 (excellent) in the
afternoon.
Pcpn Amount.........None.
$$
MIZ040-046-182045-
Clare-Isabella-
Including the cities of Clare and Mount Pleasant
406 AM EDT Tue Aug 18 2026
.TODAY...
Sky/weather.........Mostly sunny (45-55 percent). Chance of rain
showers after 11 AM. Slight chance of
thunderstorms after 2 PM.
Chance of pcpn......40 percent in the late morning and
afternoon.
Max temperature.....Around 84.
24 hr trend......2 degrees warmer.
Min humidity........41-46 percent.
24 hr trend......3 percent wetter.
20-foot winds.......West winds 7 to 12 mph. Gusts up to 23 mph in
the afternoon.
Mixing height.......3900-4400 ft AGL increasing to 6100-6600 ft AGL
in the afternoon.
Transport winds.....West around 10 mph increasing to around 20 mph
in the afternoon.
Smoke dispersal.....700-1200 (excellent).
Pcpn Amount.........none to 0.09 in.
.TONIGHT...
Sky/weather.........Partly cloudy (45-55 percent). Rain showers
likely and a slight chance of thunderstorms.
Chance of pcpn......70 percent.
Min temperature.....50-55.
24 hr trend......3 degrees warmer.
Max humidity........100 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds around 9 mph in the evening becoming
light.
Mixing height.......4500-5000 ft AGL decreasing to 500-1000 ft AGL
after midnight.
Transport winds.....West around 15 mph becoming northwest around 5
mph after midnight.
Smoke dispersal.....960 (excellent) decreasing to 60 (poor) after
midnight.
Pcpn Amount.........0.06-0.21 in.
.WEDNESDAY...
Sky/weather.........Sunny (10-20 percent).
Max temperature.....Around 79.
24 hr trend......4 degrees cooler.
Min humidity........35-40 percent.
24 hr trend......6 percent drier.
20-foot winds.......Light winds becoming northwest around 6 mph in
the afternoon.
Mixing height.......2900-3400 ft AGL increasing to 9000-9500 ft AGL
in the afternoon.
Transport winds.....Northwest 5 to 10 mph.
Smoke dispersal.....260 (fair) increasing to 1080 (excellent) in
the afternoon.
Pcpn Amount.........none to 0.01 in.
$$
MIZ050-056-064-071-182045-
Muskegon-Ottawa-Allegan-Van Buren-
Including the cities of Muskegon, Grand Haven, Jenison, Holland,
and South Haven
406 AM EDT Tue Aug 18 2026
.TODAY...
Sky/weather.........Mostly sunny (35-45 percent). Chance of rain
showers after 2 PM. Slight chance of
thunderstorms after 5 PM.
Chance of pcpn......30 percent in the afternoon.
Max temperature.....76-81.
24 hr trend......1 degree warmer.
Min humidity........56-61 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds 6 to 11 mph. Gusts up to 21 mph
in the afternoon.
Mixing height.......2600-3100 ft AGL near Lake Michigan and
4400-4900 ft AGL Inland.
Transport winds.....West 10 to 15 mph.
Smoke dispersal.....530-850 (good to excellent).
Pcpn Amount.........none to 0.07 in.
.TONIGHT...
Sky/weather.........Mostly cloudy (65-75 percent) until 12 AM, then
partly cloudy (50-60 percent). Showers and a
chance of thunderstorms.
Chance of pcpn......80 percent.
Min temperature.....59-64.
24 hr trend......3 degrees warmer.
Max humidity........95-100 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 9 mph in the evening
becoming light.
Mixing height.......Near Lake Michigan, 1500-2000 ft AGL.
Mixing height.......Inland, 3500-4000 ft AGL decreasing to 700-1200
ft AGL after midnight.
Transport winds.....West around 10 mph.
Smoke dispersal.....80-580 (poor to good).
Pcpn Amount.........0.04-0.25 in.
.WEDNESDAY...
Sky/weather.........Mostly sunny (20-30 percent).
Max temperature.....75-80.
24 hr trend......2 degrees cooler.
Min humidity........43-48 percent.
24 hr trend......2 percent drier.
20-foot winds.......Light winds becoming northwest around 6 mph in
the afternoon.
Mixing height.......Near Lake Michigan, 1800-2300 ft AGL increasing
to 4300-4800 ft AGL in the afternoon.
Mixing height.......Inland, 2100-2600 ft AGL increasing to
7200-7700 ft AGL in the afternoon.
Transport winds.....Northwest 5 to 10 mph.
Smoke dispersal.....190-760 (fair to excellent).
Pcpn Amount.........none to 0.03 in.
$$
MIZ051-052-057>059-182045-
Montcalm-Gratiot-Kent-Ionia-Clinton-
Including the cities of Greenville, Alma, Grand Rapids, Ionia,
and St. Johns
406 AM EDT Tue Aug 18 2026
.TODAY...
Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....81-86.
24 hr trend......2 degrees warmer.
Min humidity........43-48 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Southwest winds 8 to 13 mph. Gusts up to 25 mph
in the afternoon.
Mixing height.......3900-4400 ft AGL increasing to 6100-6600 ft AGL
in the afternoon.
Transport winds.....West around 10 mph increasing to around 20 mph
in the afternoon.
Smoke dispersal.....610-1160 (excellent).
Pcpn Amount.........none to 0.05 in.
.TONIGHT...
Sky/weather.........Partly cloudy (55-65 percent). Slight chance of
thunderstorms until 5 AM. Showers likely after
8 PM until 11 PM, then a chance of showers
until 5 AM.
Chance of pcpn......70 percent.
Min temperature.....58-63.
24 hr trend......4 degrees warmer.
Max humidity........100 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds 6 to 11 mph. Gusts up to 23 mph in
the evening.
Mixing height.......4800-5300 ft AGL decreasing to 700-1200 ft AGL
after midnight.
Transport winds.....West 10 to 15 mph.
Smoke dispersal.....1020 (excellent) decreasing to 80 (poor) after
midnight.
Pcpn Amount.........0.04-0.19 in.
.WEDNESDAY...
Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 80.
24 hr trend......4 degrees cooler.
Min humidity........36-41 percent.
24 hr trend......10 percent drier.
20-foot winds.......Light winds becoming northwest around 6 mph in
the afternoon.
Mixing height.......2800-3300 ft AGL increasing to 8600-9100 ft AGL
in the afternoon.
Transport winds.....Northwest 5 to 10 mph.
Smoke dispersal.....230 (fair) increasing to 970 (excellent) in the
afternoon.
Pcpn Amount.........none to 0.04 in.
$$
MIZ065>067-072>074-182045-
Barry-Eaton-Ingham-Kalamazoo-Calhoun-Jackson-
Including the cities of Hastings, Charlotte, Lansing, Kalamazoo,
Battle Creek, and Jackson
406 AM EDT Tue Aug 18 2026
.TODAY...
Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....79-84.
24 hr trend......3 degrees warmer.
Min humidity........44-49 percent.
24 hr trend......2 percent drier.
20-foot winds.......Light winds becoming west around 10 mph and
gusty in the afternoon.
Mixing height.......3500-4000 ft AGL increasing to 5900-6400 ft AGL
in the afternoon.
Transport winds.....West 10 to 15 mph.
Smoke dispersal.....450 (good) increasing to 1030 (excellent) in
the afternoon.
Pcpn Amount.........None.
.TONIGHT...
Sky/weather.........Partly cloudy (50-60 percent) until 9 PM, then
mostly cloudy (70-80 percent) until 12 AM, then
partly cloudy (55-65 percent). Showers likely
after 8 PM until 2 AM. Slight chance of
thunderstorms after 8 PM until 5 AM. Chance of
showers after 2 AM.
Chance of pcpn......70 percent.
Min temperature.....Around 63.
24 hr trend......7 degrees warmer.
Max humidity........100 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds 5 to 10 mph.
Mixing height.......5000-5500 ft AGL decreasing to 800-1300 ft AGL
after midnight.
Transport winds.....West 10 to 15 mph.
Smoke dispersal.....960 (excellent) decreasing to 70 (poor) after
midnight.
Pcpn Amount.........0.03-0.17 in.
.WEDNESDAY...
Sky/weather.........Mostly sunny (45-55 percent). Chance of showers
until 8 AM.
Chance of pcpn......40 percent early in the morning.
Max temperature.....Around 79.
24 hr trend......3 degrees cooler.
Min humidity........45-50 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Light winds becoming northwest around 5 mph in
the afternoon.
Mixing height.......2000-2500 ft AGL increasing to 7500-8000 ft AGL
in the afternoon.
Transport winds.....Northwest 5 to 10 mph.
Smoke dispersal.....210 (fair) increasing to 790 (excellent) in the
afternoon.
Pcpn Amount.........none to 0.03 in.
$$
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. North winds
5 to 7 mph in the evening becoming light.
.THURSDAY...Sunny. Highs around 80. East winds up to 5 mph shifting
to the northwest 5 to 7 mph in the afternoon.
.THURSDAY NIGHT...Mostly clear. Lows in the mid 50s. Northwest winds
5 to 6 mph shifting to the south up to 5 mph after midnight.
.FRIDAY...Mostly sunny. Chance of showers in the afternoon. Highs in
the lower 80s. Southwest winds 6 to 11 mph.
.FRIDAY NIGHT...Partly cloudy with a chance of showers. Lows in the
upper 50s. Southwest winds 5 to 10 mph.
.SATURDAY...Mostly sunny with a chance of showers. Highs in the
upper 70s. West winds 6 to 11 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the upper 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the upper 70s.
$$