117
FNUS53 KGRR 172301
FWFGRR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST LOWER MICHIGAN
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
701 PM EDT WED SEP 17 2025
..A FEW SHOWERS POSSIBLE THURSDAY AFTERNOON
DISCUSSION
A WEAK COLD FRONT WILL WILL MOVE INTO CENTRAL MICHIGAN AND THE THUMB
REGION LATE THURSDAY AFTERNOON, PROVIDING A CHANCE FOR SHOWERS.
OTHERWISE, WARM AND DRY CONDITIONS WILL PERSIST THROUGH THE DAY. THE
FRONT WILL PUSH SOUTHWARD INTO SOUTHERN MICHIGAN THURSDAY NIGHT. THE
POST FRONTAL AIRMASS WILL RESULT IN MORE CLOUD COVER AND COOLER
TEMPERATURES AND HIGHER HUMIDITIES ON FRIDAY. DEVELOPING SOUTHERLY
FLOW WILL DRIVE WARMER AND INCREASINGLY MORE HUMID AIR ACROSS THE
REGION BY THE END OF THE WEEKEND.
MIZ037>039-043>045-180815-
MASON-LAKE-OSCEOLA-OCEANA-NEWAYGO-MECOSTA-
INCLUDING THE CITIES OF LUDINGTON, BALDWIN, REED CITY, HART,
FREMONT, AND BIG RAPIDS
701 PM EDT WED SEP 17 2025
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....52-57.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......LIGHT WINDS.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 700-1200 FT AGL.
MIXING HEIGHT.......INLAND, 4200-4700 FT AGL DECREASING TO 100-600
FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE
NORTHEAST AFTER MIDNIGHT.
SMOKE DISPERSAL.....40-400 (POOR TO GOOD).
PCPN AMOUNT.........NONE.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
MAX TEMPERATURE.....79-84.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........52-57 PERCENT NEAR LAKE MICHIGAN AND 40-45
PERCENT INLAND.
24 HR TREND......10 PERCENT WETTER NEAR LAKE MICHIGAN AND 5
PERCENT WETTER INLAND.
20-FOOT WINDS.......LIGHT WINDS BECOMING NORTHWEST AROUND 7 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 1700-2200 FT AGL.
MIXING HEIGHT.......INLAND, 1200-1700 FT AGL INCREASING TO
4900-5400 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE NORTHWEST IN
THE AFTERNOON.
SMOKE DISPERSAL.....130-420 (FAIR TO GOOD).
PCPN AMOUNT.........NONE TO 0.01 IN.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
MIN TEMPERATURE.....52-57.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......NORTHEAST WINDS 5 TO 9 MPH.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 600-1100 FT AGL.
MIXING HEIGHT.......INLAND, 3300-3800 FT AGL DECREASING TO 500-1000
FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE EAST AFTER
MIDNIGHT.
SMOKE DISPERSAL.....110-360 (POOR TO GOOD).
PCPN AMOUNT.........NONE TO 0.01 IN.
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
MAX TEMPERATURE.....76-81.
24 HR TREND......6 DEGREES COOLER.
MIN HUMIDITY........49-54 PERCENT.
24 HR TREND......14 PERCENT WETTER.
20-FOOT WINDS.......EAST WINDS 5 TO 9 MPH.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 3000-3500 FT AGL.
MIXING HEIGHT.......INLAND, 1700-2200 FT AGL INCREASING TO
4100-4600 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 10 TO 15 MPH.
SMOKE DISPERSAL.....280-430 (FAIR TO GOOD).
PCPN AMOUNT.........NONE.
MIZ040-046-180815-
CLARE-ISABELLA-
INCLUDING THE CITIES OF CLARE AND MOUNT PLEASANT
701 PM EDT WED SEP 17 2025
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). PATCHY FOG AFTER
3 AM UNTIL 4 AM.
MIN TEMPERATURE.....50-55.
24 HR TREND......8 DEGREES WARMER.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......NORTHWEST WINDS 5 TO 6 MPH.
MIXING HEIGHT.......5400-5900 FT AGL DECREASING TO 0-500 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH AROUND 5 MPH.
SMOKE DISPERSAL.....40-370 (POOR TO GOOD).
PCPN AMOUNT.........NONE.
THURSDAY
SKY/WEATHER.........SUNNY (20-30 PERCENT) UNTIL 3 PM, THEN PARTLY
SUNNY (60-70 PERCENT). PATCHY FOG AFTER 7 AM
UNTIL 9 AM. CHANCE OF RAIN SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS AFTER 2 PM.
CHANCE OF PCPN......40 PERCENT IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 83.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........41-46 PERCENT.
24 HR TREND......8 PERCENT WETTER.
20-FOOT WINDS.......LIGHT WINDS BECOMING NORTHWEST AROUND 7 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......1800-2300 FT AGL INCREASING TO 6000-6500 FT AGL
IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
SMOKE DISPERSAL.....130-500 (FAIR TO GOOD).
PCPN AMOUNT.........NONE TO 0.06 IN.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT). CHANCE OF RAIN
SHOWERS UNTIL 9 PM.
CHANCE OF PCPN......30 PERCENT EARLY IN THE EVENING.
MIN TEMPERATURE.....50-55.
24 HR TREND......1 DEGREE WARMER.
MAX HUMIDITY........100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......NORTH WINDS AROUND 6 MPH IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......3500-4000 FT AGL DECREASING TO 700-1200 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
SMOKE DISPERSAL.....120-340 (POOR TO GOOD).
PCPN AMOUNT.........NONE TO 0.03 IN.
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT).
MAX TEMPERATURE.....70-75.
24 HR TREND......12 DEGREES COOLER.
MIN HUMIDITY........55-60 PERCENT.
24 HR TREND......15 PERCENT WETTER.
20-FOOT WINDS.......EAST WINDS 5 TO 9 MPH.
MIXING HEIGHT.......3200-3700 FT AGL.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
SMOKE DISPERSAL.....300-420 (GOOD).
PCPN AMOUNT.........NONE.
MIZ050-056-064-071-180815-
MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
INCLUDING THE CITIES OF MUSKEGON, GRAND HAVEN, JENISON, HOLLAND,
AND SOUTH HAVEN
701 PM EDT WED SEP 17 2025
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). PATCHY FOG AFTER 5
AM.
MIN TEMPERATURE.....52-57.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......LIGHT WINDS.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 700-1200 FT AGL.
MIXING HEIGHT.......INLAND, 4100-4600 FT AGL DECREASING TO 0-500 FT
AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE
NORTHEAST AFTER MIDNIGHT.
SMOKE DISPERSAL.....20-280 (POOR TO FAIR).
PCPN AMOUNT.........NONE.
THURSDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT). PATCHY FOG UNTIL 7 AM.
MAX TEMPERATURE.....81-86.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........45-50 PERCENT NEAR LAKE MICHIGAN AND 35-40
PERCENT INLAND.
24 HR TREND......UNCHANGED NEAR LAKE MICHIGAN AND 4 PERCENT
WETTER INLAND.
20-FOOT WINDS.......LIGHT WINDS BECOMING NORTHWEST AROUND 7 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 2000-2500 FT AGL.
MIXING HEIGHT.......INLAND, 1400-1900 FT AGL INCREASING TO
5900-6400 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
SMOKE DISPERSAL.....60-360 (POOR TO GOOD).
PCPN AMOUNT.........NONE.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
MIN TEMPERATURE.....55-60.
24 HR TREND......1 DEGREE WARMER.
MAX HUMIDITY........98 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......NORTH WINDS AROUND 6 MPH SHIFTING TO THE
NORTHEAST AROUND 5 MPH AFTER MIDNIGHT.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 700-1200 FT AGL.
MIXING HEIGHT.......INLAND, 4400-4900 FT AGL DECREASING TO 300-800
FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE EAST AFTER
MIDNIGHT.
SMOKE DISPERSAL.....70-310 (POOR TO GOOD).
PCPN AMOUNT.........NONE.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
MAX TEMPERATURE.....80-85.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........43-48 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......EAST WINDS 5 TO 9 MPH.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 1200-1700 FT AGL INCREASING
TO 4100-4600 FT AGL IN THE AFTERNOON.
MIXING HEIGHT.......INLAND, 1500-2000 FT AGL INCREASING TO
6100-6600 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
SMOKE DISPERSAL.....200-500 (FAIR TO GOOD).
PCPN AMOUNT.........NONE.
MIZ051-052-057>059-180815-
MONTCALM-GRATIOT-KENT-IONIA-CLINTON-
INCLUDING THE CITIES OF GREENVILLE, ALMA, GRAND RAPIDS, IONIA,
AND ST. JOHNS
701 PM EDT WED SEP 17 2025
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....53-58.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 5 MPH IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......5000-5500 FT AGL DECREASING TO 100-600 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
SMOKE DISPERSAL.....40-300 (POOR TO GOOD).
PCPN AMOUNT.........NONE.
THURSDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....AROUND 84.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........36-41 PERCENT.
24 HR TREND......4 PERCENT WETTER.
20-FOOT WINDS.......LIGHT WINDS BECOMING NORTHWEST AROUND 8 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......1700-2200 FT AGL INCREASING TO 6100-6600 FT AGL
IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
SMOKE DISPERSAL.....120-440 (POOR TO GOOD).
PCPN AMOUNT.........NONE TO 0.05 IN.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....54-59.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........99 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......NORTHEAST WINDS 5 TO 9 MPH.
MIXING HEIGHT.......4900-5400 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.
SMOKE DISPERSAL.....140-330 (FAIR TO GOOD).
PCPN AMOUNT.........NONE TO 0.03 IN.
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
MAX TEMPERATURE.....77-82.
24 HR TREND......7 DEGREES COOLER.
MIN HUMIDITY........49-54 PERCENT.
24 HR TREND......20 PERCENT WETTER.
20-FOOT WINDS.......EAST WINDS 6 TO 11 MPH.
MIXING HEIGHT.......1600-2100 FT AGL INCREASING TO 4800-5300 FT AGL
IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
SMOKE DISPERSAL.....260-460 (FAIR TO GOOD).
PCPN AMOUNT.........NONE.
MIZ065>067-072>074-180815-
BARRY-EATON-INGHAM-KALAMAZOO-CALHOUN-JACKSON-
INCLUDING THE CITIES OF HASTINGS, CHARLOTTE, LANSING, KALAMAZOO,
BATTLE CREEK, AND JACKSON
701 PM EDT WED SEP 17 2025
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). PATCHY FOG AFTER 5
AM.
MIN TEMPERATURE.....52-57.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........95-100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......LIGHT WINDS.
MIXING HEIGHT.......4700-5200 FT AGL DECREASING TO 100-600 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
SMOKE DISPERSAL.....30-220 (POOR TO FAIR).
PCPN AMOUNT.........NONE.
THURSDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT). PATCHY FOG UNTIL 7 AM.
MAX TEMPERATURE.....AROUND 86.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........32-37 PERCENT.
24 HR TREND......6 PERCENT WETTER.
20-FOOT WINDS.......LIGHT WINDS BECOMING NORTHWEST AROUND 7 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......1800-2300 FT AGL INCREASING TO 6600-7100 FT AGL
IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
SMOKE DISPERSAL.....110-450 (POOR TO GOOD).
PCPN AMOUNT.........NONE.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
MIN TEMPERATURE.....AROUND 56.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........100 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......NORTH WINDS AROUND 6 MPH SHIFTING TO THE
NORTHEAST AROUND 5 MPH AFTER MIDNIGHT.
MIXING HEIGHT.......6100-6600 FT AGL DECREASING TO 200-700 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
SMOKE DISPERSAL.....40-360 (POOR TO GOOD).
PCPN AMOUNT.........NONE.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
MAX TEMPERATURE.....79-84.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........44-49 PERCENT.
24 HR TREND......15 PERCENT WETTER.
20-FOOT WINDS.......EAST WINDS 5 TO 9 MPH.
MIXING HEIGHT.......1800-2300 FT AGL INCREASING TO 6100-6600 FT AGL
IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 5 TO 10 MPH.
SMOKE DISPERSAL.....170-510 (FAIR TO GOOD).
PCPN AMOUNT.........NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
5 TO 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHEAST WINDS
5 TO 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTHEAST
WINDS 5 TO 9 MPH.
SUNDAY
PARTLY SUNNY. CHANCE OF SHOWERS IN THE AFTERNOON. HIGHS IN
THE LOWER 80S. SOUTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE
UPPER 50S. SOUTH WINDS 5 TO 9 MPH.
MONDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE UPPER
70S. SOUTHWEST WINDS 5 TO 10 MPH.
MONDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE
UPPER 50S.
TUESDAY
PARTLY SUNNY. CHANCE OF SHOWERS IN THE AFTERNOON. HIGHS
IN THE MID 70S.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
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