104
FNUS53 KGRR 181826
FWFGRR
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST LOWER MICHIGAN
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
226 PM EDT SAT APR 18 2026
..DRY THROUGH MID WEEK
DISCUSSION
COOL CONDITIONS ARE EXPECTED THIS WEEKEND WITH OVERNIGHT LOWS
IN THEW 30S TONIGHT AND 20S SUNDAY BRINGING POTENTIAL FROST.
CLEAR SKIES AND MIXING WILL ALLOW MINRHS TO FALL INTO THE
LOW 40S/UPPER 30S SUNDAY AND THE LOW 30S/UPPER 20S MONDAY.
IN SHARP CONTRAST TO THE RECENT PATTERN, PRECIPITATION IS NOT
EXPECTED UNTIL LATE THIS WEEK ALLOWING DRYING TO OCCUR.
MIZ037>039-043>045-190815-
MASON-LAKE-OSCEOLA-OCEANA-NEWAYGO-MECOSTA-
INCLUDING THE CITIES OF LUDINGTON, BALDWIN, REED CITY, HART,
FREMONT, AND BIG RAPIDS
226 PM EDT SAT APR 18 2026
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....28-33.
24 HR TREND......7 DEGREES COOLER.
MAX HUMIDITY........77-82 PERCENT.
24 HR TREND......21 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 7 TO 12 MPH. GUSTS UP TO 24 MPH IN
THE EVENING.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 3700-4200 FT AGL DECREASING
TO 1400-1900 FT AGL AFTER MIDNIGHT.
MIXING HEIGHT.......INLAND, 4800-5300 FT AGL DECREASING TO
1500-2000 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 15 MPH
AFTER MIDNIGHT.
SMOKE DISPERSAL.....1520 (EXCELLENT) DECREASING TO 350 (GOOD) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
MAX TEMPERATURE.....41-46.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........42-47 PERCENT NEAR LAKE MICHIGAN AND 33-38
PERCENT INLAND.
24 HR TREND......14 PERCENT DRIER NEAR LAKE MICHIGAN AND 16
PERCENT DRIER INLAND.
20-FOOT WINDS.......NORTHWEST WINDS 8 TO 13 MPH. GUSTS UP TO 24 MPH
IN THE AFTERNOON.
MIXING HEIGHT.......5300-5800 FT AGL NEAR LAKE MICHIGAN AND
7200-7700 FT AGL INLAND.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
SMOKE DISPERSAL.....1840-2270 (EXCELLENT).
PCPN AMOUNT.........NONE.
SUNDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....19-24.
24 HR TREND......10 DEGREES COOLER.
MAX HUMIDITY........69-74 PERCENT.
24 HR TREND......7 PERCENT DRIER.
20-FOOT WINDS.......NORTH WINDS AROUND 8 MPH IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 4000-4500 FT AGL DECREASING
TO 1900-2400 FT AGL AFTER MIDNIGHT.
MIXING HEIGHT.......INLAND, 6000-6500 FT AGL DECREASING TO
1100-1600 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
SMOKE DISPERSAL.....1670 (EXCELLENT) DECREASING TO 170 (FAIR) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
MONDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....41-46.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........36-41 PERCENT NEAR LAKE MICHIGAN AND 27-32
PERCENT INLAND.
24 HR TREND......5 PERCENT DRIER NEAR LAKE MICHIGAN AND 8
PERCENT DRIER INLAND.
20-FOOT WINDS.......LIGHT WINDS BECOMING WEST AROUND 6 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......4100-4600 FT AGL NEAR LAKE MICHIGAN AND
6000-6500 FT AGL INLAND.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
SMOKE DISPERSAL.....730-790 (EXCELLENT).
PCPN AMOUNT.........NONE.
MIZ040-046-190815-
CLARE-ISABELLA-
INCLUDING THE CITIES OF CLARE AND MOUNT PLEASANT
226 PM EDT SAT APR 18 2026
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....28-33.
24 HR TREND......15 DEGREES COOLER.
MAX HUMIDITY........76-81 PERCENT.
24 HR TREND......18 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 7 TO 12 MPH. GUSTS UP TO 23 MPH IN
THE EVENING.
MIXING HEIGHT.......4600-5100 FT AGL DECREASING TO 1500-2000 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 15 MPH
AFTER MIDNIGHT.
SMOKE DISPERSAL.....1440 (EXCELLENT) DECREASING TO 290 (FAIR) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
SUNDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT) UNTIL 9 AM, THEN PARTLY
SUNNY (55-65 PERCENT).
MAX TEMPERATURE.....43-48.
24 HR TREND......17 DEGREES COOLER.
MIN HUMIDITY........34-39 PERCENT.
24 HR TREND......11 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 8 TO 13 MPH. GUSTS UP TO 25 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......8500-9000 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
SMOKE DISPERSAL.....1970-2500 (EXCELLENT).
PCPN AMOUNT.........NONE.
SUNDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....18-23.
24 HR TREND......7 DEGREES COOLER.
MAX HUMIDITY........66-71 PERCENT.
24 HR TREND......13 PERCENT DRIER.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 9 MPH IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......6200-6700 FT AGL DECREASING TO 2100-2600 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH BECOMING NORTH AROUND
10 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....1770 (EXCELLENT) DECREASING TO 420 (GOOD) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
MONDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....44-49.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........27-32 PERCENT.
24 HR TREND......7 PERCENT DRIER.
20-FOOT WINDS.......LIGHT WINDS BECOMING WEST AROUND 5 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......6600-7100 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
SMOKE DISPERSAL.....820-910 (EXCELLENT).
PCPN AMOUNT.........NONE.
MIZ050-056-064-071-190815-
MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
INCLUDING THE CITIES OF MUSKEGON, GRAND HAVEN, JENISON, HOLLAND,
AND SOUTH HAVEN
226 PM EDT SAT APR 18 2026
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
MIN TEMPERATURE.....33-38.
24 HR TREND......8 DEGREES COOLER.
MAX HUMIDITY........73-78 PERCENT.
24 HR TREND......21 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 7 TO 12 MPH. GUSTS UP TO 21 MPH IN
THE EVENING.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 4000-4500 FT AGL.
MIXING HEIGHT.......INLAND, 4400-4900 FT AGL DECREASING TO
1000-1500 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
SMOKE DISPERSAL.....1430 (EXCELLENT) DECREASING TO 360 (GOOD) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
MAX TEMPERATURE.....45-50.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........39-44 PERCENT.
24 HR TREND......12 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 9 TO 14 MPH. GUSTS UP TO 24 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......5700-6200 FT AGL NEAR LAKE MICHIGAN AND
7300-7800 FT AGL INLAND.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
SMOKE DISPERSAL.....1920-2070 (EXCELLENT).
PCPN AMOUNT.........NONE.
SUNDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....24-29.
24 HR TREND......9 DEGREES COOLER.
MAX HUMIDITY........73-78 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 8 MPH IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 4600-5100 FT AGL DECREASING
TO 1000-1500 FT AGL AFTER MIDNIGHT.
MIXING HEIGHT.......INLAND, 5500-6000 FT AGL DECREASING TO 400-900
FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH AROUND 15 MPH BECOMING NORTHEAST AROUND 5
MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....1360 (EXCELLENT) DECREASING TO 80 (POOR) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
MONDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....44-49.
24 HR TREND......UNCHANGED.
MIN HUMIDITY........29-34 PERCENT.
24 HR TREND......12 PERCENT DRIER.
20-FOOT WINDS.......LIGHT WINDS BECOMING WEST AROUND 6 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......4800-5300 FT AGL NEAR LAKE MICHIGAN AND
5900-6400 FT AGL INLAND.
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE WEST IN THE
AFTERNOON.
SMOKE DISPERSAL.....540-620 (GOOD TO EXCELLENT).
PCPN AMOUNT.........NONE.
MIZ051-052-057>059-190815-
MONTCALM-GRATIOT-KENT-IONIA-CLINTON-
INCLUDING THE CITIES OF GREENVILLE, ALMA, GRAND RAPIDS, IONIA,
AND ST. JOHNS
226 PM EDT SAT APR 18 2026
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....AROUND 33.
24 HR TREND......12 DEGREES COOLER.
MAX HUMIDITY........77-82 PERCENT.
24 HR TREND......18 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 25 MPH IN
THE EVENING.
MIXING HEIGHT.......4400-4900 FT AGL DECREASING TO 1500-2000 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 15 MPH
AFTER MIDNIGHT.
SMOKE DISPERSAL.....1420 (EXCELLENT) DECREASING TO 340 (GOOD) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
MAX TEMPERATURE.....AROUND 46.
24 HR TREND......15 DEGREES COOLER.
MIN HUMIDITY........36-41 PERCENT.
24 HR TREND......12 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 11 TO 16 MPH WITH GUSTS TO AROUND 28
MPH.
MIXING HEIGHT.......8000-8500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 20 MPH INCREASING TO AROUND 30 MPH
IN THE AFTERNOON.
SMOKE DISPERSAL.....2290-2390 (EXCELLENT).
PCPN AMOUNT.........NONE.
SUNDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....AROUND 25.
24 HR TREND......9 DEGREES COOLER.
MAX HUMIDITY........70-75 PERCENT.
24 HR TREND......10 PERCENT DRIER.
20-FOOT WINDS.......NORTHWEST WINDS 6 TO 11 MPH.
MIXING HEIGHT.......6300-6800 FT AGL DECREASING TO 1600-2100 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
SMOKE DISPERSAL.....1680 (EXCELLENT) DECREASING TO 180 (FAIR) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
MONDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....AROUND 47.
24 HR TREND......UNCHANGED.
MIN HUMIDITY........28-33 PERCENT.
24 HR TREND......9 PERCENT DRIER.
20-FOOT WINDS.......LIGHT WINDS BECOMING WEST AROUND 7 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......6400-6900 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
SMOKE DISPERSAL.....620-830 (EXCELLENT).
PCPN AMOUNT.........NONE.
MIZ065>067-072>074-190815-
BARRY-EATON-INGHAM-KALAMAZOO-CALHOUN-JACKSON-
INCLUDING THE CITIES OF HASTINGS, CHARLOTTE, LANSING, KALAMAZOO,
BATTLE CREEK, AND JACKSON
226 PM EDT SAT APR 18 2026
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....AROUND 33.
24 HR TREND......12 DEGREES COOLER.
MAX HUMIDITY........77-82 PERCENT.
24 HR TREND......18 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 7 TO 12 MPH. GUSTS UP TO 23 MPH IN
THE EVENING.
MIXING HEIGHT.......4200-4700 FT AGL DECREASING TO 1700-2200 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 15 MPH
AFTER MIDNIGHT.
SMOKE DISPERSAL.....1340 (EXCELLENT) DECREASING TO 370 (GOOD) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
SUNDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT) UNTIL 12 PM, THEN PARTLY
SUNNY (50-60 PERCENT). CHANCE OF RAIN SHOWERS
AFTER 12 PM.
CHANCE OF PCPN......30 PERCENT IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 48.
24 HR TREND......15 DEGREES COOLER.
MIN HUMIDITY........35-40 PERCENT.
24 HR TREND......19 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 26 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......8200-8700 FT AGL.
TRANSPORT WINDS.....WEST AROUND 20 MPH INCREASING TO AROUND 30 MPH
IN THE AFTERNOON.
SMOKE DISPERSAL.....2250-2500 (EXCELLENT).
PCPN AMOUNT.........NONE.
SUNDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....AROUND 25.
24 HR TREND......9 DEGREES COOLER.
MAX HUMIDITY........73-78 PERCENT.
24 HR TREND......7 PERCENT DRIER.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......5800-6300 FT AGL DECREASING TO 800-1300 FT AGL
AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
SMOKE DISPERSAL.....1660 (EXCELLENT) DECREASING TO 100 (POOR) AFTER
MIDNIGHT.
PCPN AMOUNT.........NONE.
MONDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 47.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........28-33 PERCENT.
24 HR TREND......10 PERCENT DRIER.
20-FOOT WINDS.......LIGHT WINDS BECOMING NORTHWEST AROUND 6 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......6500-7000 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
SMOKE DISPERSAL.....700-800 (EXCELLENT).
PCPN AMOUNT.........NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTH WINDS
5 TO 10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. SOUTHWEST WINDS 8 TO
13 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
5 TO 10 MPH SHIFTING TO THE NORTH 5 TO 7 MPH AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS 5 TO
9 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHEAST
WINDS 5 TO 9 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. SOUTH WINDS 6 TO
11 MPH.
THURSDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 50S.
FRIDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE LOWER
70S.
FRIDAY NIGHT
COOLER. MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
IN THE MID 40S.
SATURDAY
COOLER. PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN
THE UPPER 50S.
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