877
FNUS53 KGRR 170848
FWFGRR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST LOWER MICHIGAN
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
448 AM EDT SUN MAY 17 2026
..ROUNDS OF SHOWERS AND THUNDERSTORMS EXPECTED THROUGH TUESDAY
DISCUSSION
A WARM FRONT WILL LIFT NORTH THROUGH THE AREA TODAY. THE REGION WILL
STAY IN THE WARM SECTOR OF A LOW PRESSURE SYSTEM INTO TUESDAY WITH
WARM AND MOIST AIR IN PLACE. A COLD FRONT WILL SWEEP THROUGH ON
TUESDAY. ROUNDS OF SHOWERS AND STORMS CAN BE EXPECTED FROM THIS
MORNING RIGHT THROUGH TUESDAY. SEVERE WEATHER IS POSSIBLE ALL THREE
DAYS FROM TODAY THROUGH TUESDAY.
MIZ037>039-043>045-172015-
MASON-LAKE-OSCEOLA-OCEANA-NEWAYGO-MECOSTA-
INCLUDING THE CITIES OF LUDINGTON, BALDWIN, REED CITY, HART,
FREMONT, AND BIG RAPIDS
448 AM EDT SUN MAY 17 2026
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). CHANCE OF RAIN
SHOWERS AFTER 8 AM UNTIL 2 PM. SLIGHT CHANCE OF
THUNDERSTORMS AFTER 11 AM. RAIN SHOWERS LIKELY
AFTER 2 PM.
CHANCE OF PCPN......70 PERCENT.
MAX TEMPERATURE.....78-83.
24 HR TREND......5 DEGREES COOLER.
MIN HUMIDITY........44-49 PERCENT.
24 HR TREND......20 PERCENT WETTER.
20-FOOT WINDS.......EAST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......1100-1600 FT AGL NEAR LAKE MICHIGAN AND
2100-2600 FT AGL INLAND.
TRANSPORT WINDS.....EAST 10 TO 15 MPH.
SMOKE DISPERSAL.....180-380 (FAIR TO GOOD).
PCPN AMOUNT.........0.01-0.31 IN.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) UNTIL 9 PM, THEN
PARTLY CLOUDY (45-55 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS UNTIL 8 PM. CHANCE OF RAIN
SHOWERS UNTIL 12 AM.
CHANCE OF PCPN......40 PERCENT IN THE EVENING.
MIN TEMPERATURE.....55-60.
24 HR TREND......13 DEGREES WARMER.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......SOUTHEAST WINDS 8 TO 13 MPH AND GUSTY.
MIXING HEIGHT.......1600-2100 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH.
SMOKE DISPERSAL.....140-310 (FAIR TO GOOD).
PCPN AMOUNT.........0.02-0.16 IN.
MONDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). CHANCE OF RAIN
SHOWERS UNTIL 12 PM. CHANCE OF THUNDERSTORMS.
RAIN SHOWERS LIKELY AFTER 12 PM.
CHANCE OF PCPN......60 PERCENT.
MAX TEMPERATURE.....81-86.
24 HR TREND......7 DEGREES WARMER.
MIN HUMIDITY........46-51 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 12 TO 17 MPH WITH GUSTS TO
AROUND 31 MPH.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 1300-1800 FT AGL.
MIXING HEIGHT.......INLAND, 1800-2300 FT AGL INCREASING TO
3900-4400 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....560 (GOOD) INCREASING TO 1240 (EXCELLENT) IN
THE AFTERNOON.
PCPN AMOUNT.........0.02-0.24 IN.
MIZ040-046-172015-
CLARE-ISABELLA-
INCLUDING THE CITIES OF CLARE AND MOUNT PLEASANT
448 AM EDT SUN MAY 17 2026
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). CHANCE OF RAIN
SHOWERS AFTER 11 AM. SLIGHT CHANCE OF
THUNDERSTORMS AFTER 2 PM.
CHANCE OF PCPN......50 PERCENT IN THE LATE MORNING AND
AFTERNOON.
MAX TEMPERATURE.....72-77.
24 HR TREND......11 DEGREES COOLER.
MIN HUMIDITY........42-47 PERCENT.
24 HR TREND......17 PERCENT WETTER.
20-FOOT WINDS.......LIGHT WINDS BECOMING EAST AROUND 8 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......2400-2900 FT AGL.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
SMOKE DISPERSAL.....190-390 (FAIR TO GOOD).
PCPN AMOUNT.........0.01-0.24 IN.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) UNTIL 12 AM, THEN
PARTLY CLOUDY (50-60 PERCENT). RAIN SHOWERS
LIKELY UNTIL 7 PM. SLIGHT CHANCE OF
THUNDERSTORMS UNTIL 8 PM. CHANCE OF RAIN
SHOWERS AFTER 7 PM UNTIL 1 AM.
CHANCE OF PCPN......70 PERCENT UNTIL EARLY MORNING.
MIN TEMPERATURE.....52-57.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......SOUTHEAST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......1400-1900 FT AGL.
TRANSPORT WINDS.....EAST AROUND 15 MPH SHIFTING TO THE SOUTH AFTER
MIDNIGHT.
SMOKE DISPERSAL.....100-270 (POOR TO FAIR).
PCPN AMOUNT.........0.01-0.15 IN.
MONDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). CHANCE OF RAIN
SHOWERS AFTER 1 PM UNTIL 2 PM, THEN RAIN
SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS.
CHANCE OF PCPN......60 PERCENT IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 87.
24 HR TREND......13 DEGREES WARMER.
MIN HUMIDITY........47 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 11 TO 16 MPH WITH GUSTS TO
AROUND 29 MPH.
MIXING HEIGHT.......4000-4500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH INCREASING TO AROUND 30
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....690 (EXCELLENT) INCREASING TO 1290 (EXCELLENT)
IN THE AFTERNOON.
PCPN AMOUNT.........0.01-0.11 IN.
MIZ050-056-064-071-172015-
MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
INCLUDING THE CITIES OF MUSKEGON, GRAND HAVEN, JENISON, HOLLAND,
AND SOUTH HAVEN
448 AM EDT SUN MAY 17 2026
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS UNTIL 11 AM. CHANCE OF RAIN
SHOWERS. SLIGHT CHANCE OF THUNDERSTORMS AFTER 2
PM.
CHANCE OF PCPN......50 PERCENT.
MAX TEMPERATURE.....82-87.
24 HR TREND......7 DEGREES WARMER.
MIN HUMIDITY........49-54 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTH AROUND 9 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 1900-2400 FT AGL.
MIXING HEIGHT.......INLAND, 1400-1900 FT AGL INCREASING TO
3400-3900 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 5 MPH INCREASING TO AROUND 15 MPH
IN THE AFTERNOON.
SMOKE DISPERSAL.....180-750 (FAIR TO EXCELLENT).
PCPN AMOUNT.........NONE TO 0.14 IN.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS UNTIL 8 PM. CHANCE OF RAIN
SHOWERS UNTIL 11 PM.
CHANCE OF PCPN......30 PERCENT IN THE EVENING.
MIN TEMPERATURE.....57-62.
24 HR TREND......10 DEGREES WARMER.
MAX HUMIDITY........79-84 PERCENT.
24 HR TREND......23 PERCENT DRIER.
20-FOOT WINDS.......SOUTH WINDS 8 TO 13 MPH AND GUSTY.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 1600-2100 FT AGL.
MIXING HEIGHT.......INLAND, 3600-4100 FT AGL DECREASING TO 300-800
FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
SMOKE DISPERSAL.....770 (EXCELLENT) DECREASING TO 140 (FAIR) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE TO 0.05 IN.
MONDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). CHANCE OF RAIN
SHOWERS UNTIL 12 PM. CHANCE OF THUNDERSTORMS.
RAIN SHOWERS LIKELY AFTER 12 PM.
CHANCE OF PCPN......70 PERCENT.
MAX TEMPERATURE.....82-87.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........49-54 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......SOUTH WINDS 12 TO 17 MPH WITH GUSTS TO AROUND
31 MPH.
MIXING HEIGHT.......1900-2400 FT AGL NEAR LAKE MICHIGAN AND
3600-4100 FT AGL INLAND.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....630-1040 (EXCELLENT).
PCPN AMOUNT.........0.03-0.26 IN.
MIZ051-052-057>059-172015-
MONTCALM-GRATIOT-KENT-IONIA-CLINTON-
INCLUDING THE CITIES OF GREENVILLE, ALMA, GRAND RAPIDS, IONIA,
AND ST. JOHNS
448 AM EDT SUN MAY 17 2026
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF
THUNDERSTORMS. RAIN SHOWERS LIKELY AFTER 12 PM.
CHANCE OF PCPN......60 PERCENT.
MAX TEMPERATURE.....79-84.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........48-53 PERCENT.
24 HR TREND......15 PERCENT WETTER.
20-FOOT WINDS.......SOUTHEAST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......3200-3700 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
SMOKE DISPERSAL.....170-540 (FAIR TO GOOD).
PCPN AMOUNT.........NONE TO 0.09 IN.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). CHANCE OF
THUNDERSTORMS UNTIL 8 PM. CHANCE OF SHOWERS
UNTIL 12 AM.
CHANCE OF PCPN......50 PERCENT IN THE EVENING.
MIN TEMPERATURE.....60-65.
24 HR TREND......11 DEGREES WARMER.
MAX HUMIDITY........88-93 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......SOUTHEAST WINDS 8 TO 13 MPH. GUSTS UP TO 22 MPH
AFTER MIDNIGHT.
MIXING HEIGHT.......2600-3100 FT AGL DECREASING TO 300-800 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
SMOKE DISPERSAL.....120-530 (POOR TO GOOD).
PCPN AMOUNT.........NONE TO 0.09 IN.
MONDAY
SKY/WEATHER.........SUNNY (20-30 PERCENT) UNTIL 12 PM, THEN PARTLY
SUNNY (50-60 PERCENT). CHANCE OF SHOWERS AFTER
11 AM UNTIL 2 PM, THEN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS.
CHANCE OF PCPN......70 PERCENT IN THE LATE MORNING AND
AFTERNOON.
MAX TEMPERATURE.....84-89.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........43-48 PERCENT.
24 HR TREND......10 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO
AROUND 33 MPH.
MIXING HEIGHT.......4100-4600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....720-1210 (EXCELLENT).
PCPN AMOUNT.........0.02-0.14 IN.
MIZ065>067-072>074-172015-
BARRY-EATON-INGHAM-KALAMAZOO-CALHOUN-JACKSON-
INCLUDING THE CITIES OF HASTINGS, CHARLOTTE, LANSING, KALAMAZOO,
BATTLE CREEK, AND JACKSON
448 AM EDT SUN MAY 17 2026
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF RAIN
SHOWERS. CHANCE OF THUNDERSTORMS AFTER 2 PM.
CHANCE OF PCPN......40 PERCENT.
MAX TEMPERATURE.....AROUND 83.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........49-54 PERCENT.
24 HR TREND......9 PERCENT WETTER.
20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTH AROUND 9 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......3800-4300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....220-630 (FAIR TO EXCELLENT).
PCPN AMOUNT.........NONE TO 0.03 IN.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). CHANCE OF
SHOWERS AND THUNDERSTORMS UNTIL 8 PM.
CHANCE OF PCPN......30 PERCENT EARLY IN THE EVENING.
MIN TEMPERATURE.....AROUND 65.
24 HR TREND......8 DEGREES WARMER.
MAX HUMIDITY........79-84 PERCENT.
24 HR TREND......22 PERCENT DRIER.
20-FOOT WINDS.......SOUTH WINDS 7 TO 12 MPH AND GUSTY.
MIXING HEIGHT.......3200-3700 FT AGL DECREASING TO 300-800 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
SMOKE DISPERSAL.....110-670 (POOR TO EXCELLENT).
PCPN AMOUNT.........NONE TO 0.02 IN.
MONDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). CHANCE OF SHOWERS
AFTER 11 AM UNTIL 2 PM. CHANCE OF THUNDERSTORMS
AFTER 11 AM. SHOWERS LIKELY AFTER 2 PM.
CHANCE OF PCPN......60 PERCENT IN THE LATE MORNING AND
AFTERNOON.
MAX TEMPERATURE.....AROUND 86.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........43-48 PERCENT.
24 HR TREND......5 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 13 TO 18 MPH WITH GUSTS TO
AROUND 30 MPH.
MIXING HEIGHT.......4400-4900 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....760-1310 (EXCELLENT).
PCPN AMOUNT.........0.01-0.13 IN.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY NIGHT
PARTLY CLOUDY WITH SHOWERS LIKELY. CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 60S. SOUTHWEST WINDS 7 TO 12 MPH.
TUESDAY
PARTLY SUNNY. CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN SHOWERS AND A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST
WINDS 12 TO 17 MPH.
TUESDAY NIGHT
COOLER. MOSTLY CLOUDY. SHOWERS AND A CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER 40S. WEST WINDS 8 TO
13 MPH.
WEDNESDAY
MUCH COOLER. MOSTLY SUNNY. HIGHS AROUND 60. NORTHWEST
WINDS 7 TO 12 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S. NORTH WINDS
5 TO 10 MPH.
THURSDAY
SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS 5 TO 9 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S.
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