434  
FNUS53 KGRR 240920  
FWFGRR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST LOWER MICHIGAN  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
520 AM EDT WED APR 24 2024  
   
..COLD AND DRY WEATHER THE NEXT FEW DAYS
 
 
   
DISCUSSION
 
 
TODAY WILL BRING DOWNSLOPING FLOW WITH COLD AIR ADVECTION. WINDS WILL  
CONTINUE TO SLACKEN AS THE DAY CONTINUES. COLD MORNING TEMPERATURES ARE  
EXPECTED INTO FRIDAY, ESPECIALLY TONIGHT INTO THURSDAY MORNING WHEN  
WIDESPREAD FREEZING TEMPERATURES ARE LIKELY. HIGH PRESSURE WILL SETTLE  
OVERHEAD THURSDAY. TEMPERATURES WILL MODERATE BY THE END OF THE WEEK WITH  
WARMER AND MORE HUMID CONDITIONS THIS WEEKEND. A FEW ROUNDS OF SHOWERS  
AND STORMS WILL BE POSSIBLE FRIDAY NIGHT THROUGH SUNDAY.  
 
MIZ037>039-043>045-242130-  
MASON-LAKE-OSCEOLA-OCEANA-NEWAYGO-MECOSTA-  
INCLUDING THE CITIES OF LUDINGTON, BALDWIN, REED CITY, HART,  
FREMONT, AND BIG RAPIDS  
520 AM EDT WED APR 24 2024  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT) UNTIL 11 AM, THEN  
SUNNY (0-10 PERCENT).  
MAX TEMPERATURE.....48-53.  
24 HR TREND......9 DEGREES COOLER.  
MIN HUMIDITY........35-40 PERCENT NEAR LAKE MICHIGAN AND 17-22  
PERCENT INLAND.  
24 HR TREND......11 PERCENT DRIER NEAR LAKE MICHIGAN AND 27  
PERCENT DRIER INLAND.  
20-FOOT WINDS.......NORTH WINDS 7 TO 12 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......3600-4100 FT AGL NEAR LAKE MICHIGAN AND  
5000-5500 FT AGL INLAND.  
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.  
SMOKE DISPERSAL.....490-600 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). WIDESPREAD FROST  
AFTER 2 AM.  
MIN TEMPERATURE.....19-24.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........85-90 PERCENT.  
24 HR TREND......19 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST WINDS AROUND 6 MPH SHIFTING TO THE  
SOUTHEAST OVERNIGHT.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 700-1200 FT AGL.  
MIXING HEIGHT.......INLAND, 2500-3000 FT AGL DECREASING TO 200-700  
FT AGL OVERNIGHT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHEAST OVERNIGHT.  
SMOKE DISPERSAL.....70-200 (POOR TO FAIR).  
PCPN AMOUNT.........NONE.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT). WIDESPREAD FROST UNTIL 9  
AM.  
MAX TEMPERATURE.....48-53 NEAR LAKE MICHIGAN AND AROUND 56 INLAND.  
24 HR TREND......7 DEGREES WARMER NEAR LAKE MICHIGAN AND 5  
DEGREES WARMER INLAND.  
MIN HUMIDITY........37-42 PERCENT NEAR LAKE MICHIGAN AND 21-26  
PERCENT INLAND.  
24 HR TREND......1 PERCENT WETTER NEAR LAKE MICHIGAN AND 6  
PERCENT WETTER INLAND.  
20-FOOT WINDS.......SOUTH WINDS 5 TO 9 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......2900-3400 FT AGL NEAR LAKE MICHIGAN AND  
5800-6300 FT AGL INLAND.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.  
SMOKE DISPERSAL.....340-480 (GOOD).  
PCPN AMOUNT.........NONE.  
 

 
 
MIZ040-046-242130-  
CLARE-ISABELLA-  
INCLUDING THE CITIES OF CLARE AND MOUNT PLEASANT  
520 AM EDT WED APR 24 2024  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) UNTIL 11 AM, THEN  
SUNNY (0-10 PERCENT).  
MAX TEMPERATURE.....AROUND 50.  
24 HR TREND......16 DEGREES COOLER.  
MIN HUMIDITY........20-25 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST WINDS 6 TO 11 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......4900-5400 FT AGL.  
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.  
SMOKE DISPERSAL.....520-610 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR (0-10 PERCENT). WIDESPREAD FROST AFTER 1  
AM.  
MIN TEMPERATURE.....21-26.  
24 HR TREND......10 DEGREES COOLER.  
MAX HUMIDITY........80-85 PERCENT.  
24 HR TREND......16 PERCENT DRIER.  
20-FOOT WINDS.......EAST WINDS AROUND 7 MPH IN THE EVENING BECOMING  
LIGHT.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......2600-3100 FT AGL DECREASING TO 400-900 FT AGL  
OVERNIGHT.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.  
SMOKE DISPERSAL.....70-200 (POOR TO FAIR).  
PCPN AMOUNT.........NONE.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT). WIDESPREAD FROST UNTIL 9  
AM.  
MAX TEMPERATURE.....AROUND 55.  
24 HR TREND......5 DEGREES WARMER.  
MIN HUMIDITY........24-29 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......SOUTHEAST WINDS 5 TO 9 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......5400-5900 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.  
SMOKE DISPERSAL.....310-390 (GOOD).  
PCPN AMOUNT.........NONE.  
 

 
 
MIZ050-056-064-071-242130-  
MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-  
INCLUDING THE CITIES OF MUSKEGON, GRAND HAVEN, JENISON, HOLLAND,  
AND SOUTH HAVEN  
520 AM EDT WED APR 24 2024  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT) UNTIL 11 AM, THEN PARTLY  
SUNNY (55-65 PERCENT) UNTIL 2 PM, THEN SUNNY  
(10-20 PERCENT).  
MAX TEMPERATURE.....48-53.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........33-38 PERCENT NEAR LAKE MICHIGAN AND 24-29  
PERCENT INLAND.  
24 HR TREND......3 PERCENT DRIER NEAR LAKE MICHIGAN AND 8  
PERCENT DRIER INLAND.  
20-FOOT WINDS.......NORTH WINDS 7 TO 12 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......3900-4400 FT AGL NEAR LAKE MICHIGAN AND  
4900-5400 FT AGL INLAND.  
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.  
SMOKE DISPERSAL.....480-570 (GOOD).  
PCPN AMOUNT.........NONE.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). AREAS OF FROST  
AFTER 10 PM UNTIL 1 AM, THEN WIDESPREAD FROST.  
 
MIN TEMPERATURE.....27-32.  
24 HR TREND......8 DEGREES COOLER.  
MAX HUMIDITY........80-85 PERCENT.  
24 HR TREND......16 PERCENT DRIER.  
20-FOOT WINDS.......NORTH WINDS AROUND 5 MPH SHIFTING TO THE  
SOUTHEAST AROUND 6 MPH OVERNIGHT.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......NEAR LAKE MICHIGAN, 700-1200 FT AGL.  
MIXING HEIGHT.......INLAND, 2100-2600 FT AGL DECREASING TO 0-500 FT  
AGL OVERNIGHT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH SHIFTING TO THE EAST  
OVERNIGHT.  
SMOKE DISPERSAL.....50-160 (POOR TO FAIR).  
PCPN AMOUNT.........NONE.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT). WIDESPREAD FROST UNTIL 9  
AM.  
MAX TEMPERATURE.....54-59.  
24 HR TREND......6 DEGREES WARMER.  
MIN HUMIDITY........30-35 PERCENT.  
24 HR TREND......5 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST WINDS 5 TO 8 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......3800-4300 FT AGL NEAR LAKE MICHIGAN AND  
5200-5700 FT AGL INLAND.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.  
SMOKE DISPERSAL.....320-420 (GOOD).  
PCPN AMOUNT.........NONE.  
 

 
 
MIZ051-052-057>059-242130-  
MONTCALM-GRATIOT-KENT-IONIA-CLINTON-  
INCLUDING THE CITIES OF GREENVILLE, ALMA, GRAND RAPIDS, IONIA,  
AND ST. JOHNS  
520 AM EDT WED APR 24 2024  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT) UNTIL 11 AM, THEN PARTLY  
SUNNY (50-60 PERCENT) UNTIL 2 PM, THEN SUNNY  
(5-15 PERCENT).  
MAX TEMPERATURE.....48-53.  
24 HR TREND......12 DEGREES COOLER.  
MIN HUMIDITY........25-30 PERCENT.  
24 HR TREND......15 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST WINDS 7 TO 12 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......4900-5400 FT AGL.  
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.  
SMOKE DISPERSAL.....530-600 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). WIDESPREAD FROST  
AFTER 2 AM.  
MIN TEMPERATURE.....AROUND 27.  
24 HR TREND......10 DEGREES COOLER.  
MAX HUMIDITY........77-82 PERCENT.  
24 HR TREND......14 PERCENT DRIER.  
20-FOOT WINDS.......EAST WINDS 5 TO 9 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......2100-2600 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 10 MPH.  
SMOKE DISPERSAL.....70-160 (POOR TO FAIR).  
PCPN AMOUNT.........NONE.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT). WIDESPREAD FROST UNTIL 9  
AM.  
MAX TEMPERATURE.....AROUND 56.  
24 HR TREND......6 DEGREES WARMER.  
MIN HUMIDITY........24-29 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......EAST WINDS 5 TO 9 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......5200-5700 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 5 MPH.  
SMOKE DISPERSAL.....320-450 (GOOD).  
PCPN AMOUNT.........NONE.  
 

 
 
MIZ065>067-072>074-242130-  
BARRY-EATON-INGHAM-KALAMAZOO-CALHOUN-JACKSON-  
INCLUDING THE CITIES OF HASTINGS, CHARLOTTE, LANSING, KALAMAZOO,  
BATTLE CREEK, AND JACKSON  
520 AM EDT WED APR 24 2024  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT) UNTIL 2 PM, THEN MOSTLY  
SUNNY (25-35 PERCENT).  
MAX TEMPERATURE.....47-52.  
24 HR TREND......10 DEGREES COOLER.  
MIN HUMIDITY........38-43 PERCENT.  
24 HR TREND......3 PERCENT DRIER.  
20-FOOT WINDS.......NORTH WINDS 8 TO 13 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......4400-4900 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 20 MPH DECREASING TO AROUND 10 MPH  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....580-600 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). WIDESPREAD FROST  
AFTER 1 AM.  
MIN TEMPERATURE.....AROUND 27.  
24 HR TREND......11 DEGREES COOLER.  
MAX HUMIDITY........78-83 PERCENT.  
24 HR TREND......14 PERCENT DRIER.  
20-FOOT WINDS.......EAST WINDS 5 TO 8 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......2700-3200 FT AGL DECREASING TO 300-800 FT AGL  
OVERNIGHT.  
TRANSPORT WINDS.....EAST 5 TO 10 MPH.  
SMOKE DISPERSAL.....40-110 (POOR).  
PCPN AMOUNT.........NONE.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT). WIDESPREAD FROST UNTIL 9  
AM.  
MAX TEMPERATURE.....54-59.  
24 HR TREND......8 DEGREES WARMER.  
MIN HUMIDITY........27-32 PERCENT.  
24 HR TREND......13 PERCENT DRIER.  
20-FOOT WINDS.......EAST WINDS 5 TO 9 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......5100-5600 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 5 MPH.  
SMOKE DISPERSAL.....320-420 (GOOD).  
PCPN AMOUNT.........NONE.  
 

 
   
FORECAST FOR DAYS 3 THROUGH 7
 
 
   
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE MID 30S. EAST WINDS 6 TO  
11 MPH.    
FRIDAY
 
PARTLY SUNNY. CHANCE OF SHOWERS IN THE AFTERNOON. HIGHS IN  
THE MID 60S. SOUTHEAST WINDS 12 TO 17 MPH.    
FRIDAY NIGHT
 
WARMER, BREEZY, CLOUDY, SHOWERS. LOWS IN THE LOWER  
50S. SOUTHEAST WINDS 20 TO 25 MPH.    
SATURDAY
 
BREEZY. MOSTLY CLOUDY. SHOWERS LIKELY UNTIL MIDDAY, THEN  
A CHANCE OF SHOWERS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTH  
WINDS 21 TO 26 MPH.    
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS. LOWS AROUND 60. SOUTHWEST WINDS 17 TO 22 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SHOWERS LIKELY UNTIL MIDDAY, THEN A CHANCE  
OF SHOWERS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTHWEST WINDS  
15 TO 20 MPH.    
SUNDAY NIGHT
 
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE UPPER  
50S.    
MONDAY
 
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS AROUND 70.    
MONDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS AROUND 50.    
TUESDAY
 
MOSTLY SUNNY. HIGHS IN THE MID 60S.  
 

 
 
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