326
FNUS53 KGRR 180805
FWFGRR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST LOWER MICHIGAN
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
405 AM EDT MON MAY 18 2026
..SHOWERS AND STORMS TODAY AND TUESDAY
DISCUSSION
SOUTHWEST LOWER MICHIGAN WILL SEE PERIODS OF SHOWERS AND
THUNDERSTORMS FROM TODAY THROUGH THE DAY ON TUESDAY. WE WILL BE
LOCATED IN DEEP SOUTHERLY FLOW AHEAD OF A COLD FRONT THAT WILL PASS
THROUGH THE REGION TUESDAY EVENING. HIGHER DEW POINT AIR CAN BE
EXPECTED WHICH WILL BRING HIGHER RELATIVE HUMIDITY VALUES. COOLER AND
DRIER WEATHER IS EXPECTED FOR WEDNESDAY AND THURSDAY AS HIGH PRESSURE
SETTLES INTO THE AREA.
MIZ037>039-043>045-182015-
MASON-LAKE-OSCEOLA-OCEANA-NEWAYGO-MECOSTA-
INCLUDING THE CITIES OF LUDINGTON, BALDWIN, REED CITY, HART,
FREMONT, AND BIG RAPIDS
405 AM EDT MON MAY 18 2026
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF RAIN
SHOWERS UNTIL 2 PM. CHANCE OF THUNDERSTORMS.
RAIN SHOWERS LIKELY AFTER 2 PM.
CHANCE OF PCPN......60 PERCENT.
MAX TEMPERATURE.....81-86.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........49-54 PERCENT.
24 HR TREND......7 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 12 TO 17 MPH WITH GUSTS TO
AROUND 30 MPH.
MIXING HEIGHT.......1000-1500 FT AGL NEAR LAKE MICHIGAN AND
2700-3200 FT AGL INLAND.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
SMOKE DISPERSAL.....490-720 (GOOD TO EXCELLENT).
PCPN AMOUNT.........0.03-0.32 IN.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT) UNTIL 3 AM, THEN
MOSTLY CLOUDY (65-75 PERCENT). RAIN SHOWERS
LIKELY AND A CHANCE OF THUNDERSTORMS.
CHANCE OF PCPN......60 PERCENT.
MIN TEMPERATURE.....54-59 NEAR LAKE MICHIGAN AND AROUND 64 INLAND.
24 HR TREND......4 DEGREES COOLER NEAR LAKE MICHIGAN AND 2
DEGREES COOLER INLAND.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......SOUTH WINDS 9 TO 14 MPH WITH GUSTS TO AROUND 26
MPH.
MIXING HEIGHT.......1600-2100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
SMOKE DISPERSAL.....170-380 (FAIR TO GOOD).
PCPN AMOUNT.........0.05-0.19 IN.
TUESDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF
THUNDERSTORMS UNTIL 5 PM. RAIN SHOWERS.
CHANCE OF PCPN......80 PERCENT.
MAX TEMPERATURE.....76-81.
24 HR TREND......6 DEGREES COOLER.
MIN HUMIDITY........55-60 PERCENT.
24 HR TREND......6 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 14 TO 19 MPH WITH GUSTS TO
AROUND 32 MPH.
MIXING HEIGHT.......1300-1800 FT AGL NEAR LAKE MICHIGAN AND
2900-3400 FT AGL INLAND.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....780-1030 (EXCELLENT).
PCPN AMOUNT.........0.05-0.13 IN.
MIZ040-046-182015-
CLARE-ISABELLA-
INCLUDING THE CITIES OF CLARE AND MOUNT PLEASANT
405 AM EDT MON MAY 18 2026
TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT) UNTIL 12 PM, THEN
MOSTLY CLOUDY (75-85 PERCENT). CHANCE OF RAIN
SHOWERS AFTER 11 AM UNTIL 2 PM. CHANCE OF
THUNDERSTORMS AFTER 11 AM. RAIN SHOWERS AFTER 2
PM.
CHANCE OF PCPN......80 PERCENT IN THE LATE MORNING AND
AFTERNOON.
MAX TEMPERATURE.....AROUND 87.
24 HR TREND......9 DEGREES WARMER.
MIN HUMIDITY........48-53 PERCENT.
24 HR TREND......2 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 27 MPH.
MIXING HEIGHT.......3300-3800 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO AROUND 25
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....690-980 (EXCELLENT).
PCPN AMOUNT.........0.05-0.37 IN.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) UNTIL 9 PM, THEN
PARTLY CLOUDY (55-65 PERCENT) UNTIL 3 AM, THEN
MOSTLY CLOUDY (70-80 PERCENT). SHOWERS LIKELY
AND A CHANCE OF THUNDERSTORMS UNTIL 8 PM, THEN
A CHANCE OF SHOWERS. CHANCE OF THUNDERSTORMS
AFTER 11 PM.
CHANCE OF PCPN......60 PERCENT.
MIN TEMPERATURE.....AROUND 63.
24 HR TREND......8 DEGREES WARMER.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......SOUTHWEST WINDS 8 TO 13 MPH AND GUSTY.
MIXING HEIGHT.......1900-2400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
SMOKE DISPERSAL.....120-460 (POOR TO GOOD).
PCPN AMOUNT.........0.05-0.22 IN.
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT). CHANCE OF SHOWERS
UNTIL 11 AM. SHOWERS AFTER 11 AM.
CHANCE OF PCPN......80 PERCENT.
MAX TEMPERATURE.....79-84.
24 HR TREND......5 DEGREES COOLER.
MIN HUMIDITY........53-58 PERCENT.
24 HR TREND......6 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO
AROUND 32 MPH.
MIXING HEIGHT.......3800-4300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....720 (EXCELLENT) INCREASING TO 1350 (EXCELLENT)
IN THE AFTERNOON.
PCPN AMOUNT.........NONE TO 0.10 IN.
MIZ050-056-064-071-182015-
MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
INCLUDING THE CITIES OF MUSKEGON, GRAND HAVEN, JENISON, HOLLAND,
AND SOUTH HAVEN
405 AM EDT MON MAY 18 2026
TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT) UNTIL 9 AM, THEN
MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF
SHOWERS UNTIL 2 PM. CHANCE OF THUNDERSTORMS.
SHOWERS AFTER 2 PM.
CHANCE OF PCPN......80 PERCENT.
MAX TEMPERATURE.....83-88.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........51-56 PERCENT.
24 HR TREND......2 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 13 TO 18 MPH WITH GUSTS TO
AROUND 29 MPH.
MIXING HEIGHT.......1100-1600 FT AGL NEAR LAKE MICHIGAN AND
3400-3900 FT AGL INLAND.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
SMOKE DISPERSAL.....580-960 (GOOD TO EXCELLENT).
PCPN AMOUNT.........0.09-0.23 IN.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT). RAIN SHOWERS
LIKELY UNTIL 8 PM. CHANCE OF THUNDERSTORMS.
CHANCE OF RAIN SHOWERS AFTER 8 PM.
CHANCE OF PCPN......60 PERCENT.
MIN TEMPERATURE.....57-62 NEAR LAKE MICHIGAN AND AROUND 65 INLAND.
24 HR TREND......3 DEGREES COOLER NEAR LAKE MICHIGAN AND 1
DEGREE COOLER INLAND.
MAX HUMIDITY........92-97 PERCENT.
24 HR TREND......19 PERCENT WETTER.
20-FOOT WINDS.......SOUTH WINDS 9 TO 14 MPH AND GUSTY.
MIXING HEIGHT.......700-1200 FT AGL NEAR LAKE MICHIGAN AND
1800-2300 FT AGL INLAND.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....190-500 (FAIR TO GOOD).
PCPN AMOUNT.........0.05-0.14 IN.
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF RAIN
SHOWERS UNTIL 2 PM. CHANCE OF THUNDERSTORMS.
RAIN SHOWERS AFTER 2 PM.
CHANCE OF PCPN......80 PERCENT.
MAX TEMPERATURE.....79-84.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........56-61 PERCENT.
24 HR TREND......5 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 14 TO 19 MPH WITH GUSTS TO
AROUND 32 MPH.
MIXING HEIGHT.......2000-2500 FT AGL NEAR LAKE MICHIGAN AND
3800-4300 FT AGL INLAND.
TRANSPORT WINDS.....SOUTHWEST AROUND 25 MPH.
SMOKE DISPERSAL.....790 (EXCELLENT) INCREASING TO 1370 (EXCELLENT)
IN THE AFTERNOON.
PCPN AMOUNT.........0.05-0.17 IN.
MIZ051-052-057>059-182015-
MONTCALM-GRATIOT-KENT-IONIA-CLINTON-
INCLUDING THE CITIES OF GREENVILLE, ALMA, GRAND RAPIDS, IONIA,
AND ST. JOHNS
405 AM EDT MON MAY 18 2026
TODAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT) UNTIL 12 PM, THEN
MOSTLY CLOUDY (75-85 PERCENT). CHANCE OF
SHOWERS AFTER 11 AM UNTIL 2 PM. CHANCE OF
THUNDERSTORMS AFTER 11 AM. SHOWERS AFTER 2 PM.
CHANCE OF PCPN......80 PERCENT IN THE LATE MORNING AND
AFTERNOON.
MAX TEMPERATURE.....84-89.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........45-50 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 14 TO 19 MPH WITH GUSTS TO
AROUND 31 MPH.
MIXING HEIGHT.......4400-4900 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....900-1230 (EXCELLENT).
PCPN AMOUNT.........0.12-0.28 IN.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) UNTIL 9 PM, THEN
PARTLY CLOUDY (50-60 PERCENT). SHOWERS LIKELY
UNTIL 8 PM. CHANCE OF THUNDERSTORMS. CHANCE OF
SHOWERS AFTER 8 PM.
CHANCE OF PCPN......70 PERCENT.
MIN TEMPERATURE.....AROUND 66.
24 HR TREND......UNCHANGED.
MAX HUMIDITY........88-93 PERCENT.
24 HR TREND......14 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 11 TO 16 MPH WITH GUSTS TO
AROUND 28 MPH.
MIXING HEIGHT.......1900-2400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
SMOKE DISPERSAL.....170-480 (FAIR TO GOOD).
PCPN AMOUNT.........0.09-0.19 IN.
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF SHOWERS
UNTIL 11 AM. CHANCE OF THUNDERSTORMS. SHOWERS
AFTER 11 AM.
CHANCE OF PCPN......90 PERCENT.
MAX TEMPERATURE.....80-85.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........49-54 PERCENT.
24 HR TREND......5 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 18 TO 23 MPH WITH GUSTS TO
AROUND 36 MPH.
MIXING HEIGHT.......4100-4600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH.
SMOKE DISPERSAL.....890 (EXCELLENT) INCREASING TO 1490 (EXCELLENT)
IN THE AFTERNOON.
PCPN AMOUNT.........0.06-0.16 IN.
MIZ065>067-072>074-182015-
BARRY-EATON-INGHAM-KALAMAZOO-CALHOUN-JACKSON-
INCLUDING THE CITIES OF HASTINGS, CHARLOTTE, LANSING, KALAMAZOO,
BATTLE CREEK, AND JACKSON
405 AM EDT MON MAY 18 2026
TODAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT) UNTIL 12 PM, THEN
MOSTLY CLOUDY (75-85 PERCENT). CHANCE OF
THUNDERSTORMS AFTER 11 AM UNTIL 5 PM. SHOWERS
AFTER 2 PM. THUNDERSTORMS LIKELY AFTER 5 PM.
CHANCE OF PCPN......80 PERCENT IN THE LATE MORNING AND
AFTERNOON.
MAX TEMPERATURE.....84-89.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........46-51 PERCENT.
24 HR TREND......7 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 12 TO 17 MPH WITH GUSTS TO
AROUND 29 MPH.
MIXING HEIGHT.......4800-5300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....890-1390 (EXCELLENT).
PCPN AMOUNT.........0.11-0.34 IN.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT) UNTIL 12 AM, THEN
PARTLY CLOUDY (50-60 PERCENT). SHOWERS AND
THUNDERSTORMS LIKELY UNTIL 8 PM, THEN A CHANCE
OF SHOWERS AND THUNDERSTORMS.
CHANCE OF PCPN......70 PERCENT.
MIN TEMPERATURE.....AROUND 66.
24 HR TREND......UNCHANGED.
MAX HUMIDITY........85-90 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 27 MPH.
MIXING HEIGHT.......2000-2500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....170-520 (FAIR TO GOOD).
PCPN AMOUNT.........0.09-0.17 IN.
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF SHOWERS
UNTIL 2 PM. CHANCE OF THUNDERSTORMS. SHOWERS
AFTER 2 PM.
CHANCE OF PCPN......90 PERCENT.
MAX TEMPERATURE.....81-86.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........51-56 PERCENT.
24 HR TREND......2 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO
AROUND 32 MPH.
MIXING HEIGHT.......4200-4700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH.
SMOKE DISPERSAL.....900-1450 (EXCELLENT).
PCPN AMOUNT.........0.10-0.26 IN.
FORECAST FOR DAYS 3 THROUGH 7
TUESDAY NIGHT
PARTLY CLOUDY. SHOWERS AND A CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER 40S. NORTHWEST WINDS
7 TO 12 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS 6 TO
11 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 30S. NORTH WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. EAST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS
5 TO 10 MPH.
FRIDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 60S. EAST WINDS 6 TO
11 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50.
SATURDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 70S.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
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