417  
FNUS53 KGRR 210737  
FWFGRR  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHWEST LOWER MICHIGAN  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
337 AM EDT THU SEP 21 2017  
   
..MAINLY DRY TODAY
 
 
   
DISCUSSION
 
 
A WEAKENING COLD FRONT WILL DROP DOWN FROM THE NORTHWEST  
EARLY THIS MORNING AND DISSIPATE OVER THE REGION TODAY.  
MOISTURE WILL BE ON THE INCREASE AND THE ATMOSPHERE WILL  
BECOME UNSTABLE AS THE TEMPERATURES WARM UP ONCE AGAIN.  
THIS COULD SUPPORT A LOCAL THUNDERSTORM OR TWO...BUT MOST  
LOCATIONS SHOULD REMAIN DRY.  
 
MIZ037>039-043>045-212015-  
MASON-LAKE-OSCEOLA-OCEANA-NEWAYGO-MECOSTA-  
INCLUDING THE CITIES OF LUDINGTON, BALDWIN, REED CITY, HART,  
FREMONT, AND BIG RAPIDS  
337 AM EDT THU SEP 21 2017  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS UNTIL 1800.  
CHANCE OF PCPN......20 PERCENT.  
MAX TEMPERATURE.....85-90.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........62-67 PERCENT NEAR LAKE MICHIGAN AND 52-57  
PERCENT INLAND.  
24 HR TREND......4 PERCENT WETTER NEAR LAKE MICHIGAN AND 9  
PERCENT WETTER INLAND.  
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 9 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......2300-2800 FT AGL NEAR LAKE MICHIGAN AND  
6000-6500 FT AGL INLAND.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.  
SMOKE DISPERSAL.....500-800 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE TO 0.15 IN.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).  
MIN TEMPERATURE.....65-70.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........95-100 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTH AROUND 5 MPH  
OVERNIGHT.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......0-200 FT AGL NEAR LAKE MICHIGAN AND 700-1200 FT  
AGL INLAND.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH.  
SMOKE DISPERSAL.....0-100 (POOR).  
PCPN AMOUNT.........NONE.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).  
MAX TEMPERATURE.....85-90.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........55-60 PERCENT NEAR LAKE MICHIGAN AND 45-50  
PERCENT INLAND.  
24 HR TREND......4 PERCENT DRIER NEAR LAKE MICHIGAN AND 11  
PERCENT DRIER INLAND.  
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 9 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......2700-3200 FT AGL NEAR LAKE MICHIGAN AND  
5100-5600 FT AGL INLAND.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.  
SMOKE DISPERSAL.....500-600 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE.  
 

 
 
MIZ040-046-212015-  
CLARE-ISABELLA-  
INCLUDING THE CITIES OF CLARE AND MOUNT PLEASANT  
337 AM EDT THU SEP 21 2017  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF SHOWERS  
AND THUNDERSTORMS.  
CHANCE OF PCPN......30 PERCENT.  
MAX TEMPERATURE.....AROUND 88.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........50-55 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 9 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......5100-5600 FT AGL INCREASING TO 7800-8300 FT AGL  
IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.  
SMOKE DISPERSAL.....600-900 (EXCELLENT).  
PCPN AMOUNT.........0.06-0.16 IN.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT).  
MIN TEMPERATURE.....AROUND 66.  
24 HR TREND......1 DEGREE WARMER.  
MAX HUMIDITY........95-100 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 6 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......2300-2800 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 0 MPH.  
SMOKE DISPERSAL.....0-100 (POOR).  
PCPN AMOUNT.........NONE TO 0.08 IN.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).  
MAX TEMPERATURE.....AROUND 90.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........45-50 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTHWEST AROUND 5 MPH IN  
THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......7200-7700 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.  
SMOKE DISPERSAL.....500-600 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE.  
 

 
 
MIZ050-056-064-071-212015-  
MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-  
INCLUDING THE CITIES OF MUSKEGON, GRAND HAVEN, JENISON, HOLLAND,  
AND SOUTH HAVEN  
337 AM EDT THU SEP 21 2017  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).  
MAX TEMPERATURE.....86-91.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........50-55 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 9 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......3600-4100 FT AGL NEAR LAKE MICHIGAN AND  
6400-6900 FT AGL INLAND.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.  
SMOKE DISPERSAL.....500-600 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).  
MIN TEMPERATURE.....AROUND 69.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........92-97 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......SOUTH WINDS 5 TO 8 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......100-600 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH.  
SMOKE DISPERSAL.....0 (POOR).  
PCPN AMOUNT.........NONE.  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY (20-30 PERCENT).  
MAX TEMPERATURE.....86-91.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........47-52 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 8 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......3900-4400 FT AGL NEAR LAKE MICHIGAN AND  
4800-5300 FT AGL INLAND.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.  
SMOKE DISPERSAL.....400-500 (GOOD).  
PCPN AMOUNT.........NONE.  
 

 
 
MIZ051-052-057>059-212015-  
MONTCALM-GRATIOT-KENT-IONIA-CLINTON-  
INCLUDING THE CITIES OF GREENVILLE, ALMA, GRAND RAPIDS, IONIA,  
AND ST. JOHNS  
337 AM EDT THU SEP 21 2017  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS AFTER 1200.  
CHANCE OF PCPN......20 PERCENT.  
MAX TEMPERATURE.....AROUND 89.  
24 HR TREND......5 DEGREES WARMER.  
MIN HUMIDITY........49-54 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST WINDS 6 TO 11 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......6400-6900 FT AGL INCREASING TO 8400-8900 FT AGL  
IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.  
SMOKE DISPERSAL.....900-1000 (EXCELLENT).  
PCPN AMOUNT.........NONE TO 0.10 IN.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS UNTIL 2400.  
CHANCE OF PCPN......20 PERCENT IN THE EVENING.  
MIN TEMPERATURE.....AROUND 68.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........95-100 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTH AROUND 5 MPH  
OVERNIGHT.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......2800-3300 FT AGL DECREASING TO 0-300 FT AGL  
OVERNIGHT.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH.  
SMOKE DISPERSAL.....0 (POOR).  
PCPN AMOUNT.........NONE TO 0.05 IN.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).  
MAX TEMPERATURE.....AROUND 90.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........44-49 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTHWEST AROUND 6 MPH IN  
THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......8100-8600 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.  
SMOKE DISPERSAL.....500-600 (GOOD TO EXCELLENT).  
PCPN AMOUNT.........NONE.  
 

 
 
MIZ065>067-072>074-212015-  
BARRY-EATON-INGHAM-KALAMAZOO-CALHOUN-JACKSON-  
INCLUDING THE CITIES OF HASTINGS, CHARLOTTE, LANSING, KALAMAZOO,  
BATTLE CREEK, AND JACKSON  
337 AM EDT THU SEP 21 2017  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS AFTER 1300.  
CHANCE OF PCPN......20 PERCENT.  
MAX TEMPERATURE.....AROUND 90.  
24 HR TREND......5 DEGREES WARMER.  
MIN HUMIDITY........49-54 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......8300-8800 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.  
SMOKE DISPERSAL.....800-900 (EXCELLENT).  
PCPN AMOUNT.........NONE TO 0.03 IN.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS UNTIL 2400.  
CHANCE OF PCPN......20 PERCENT IN THE EVENING.  
MIN TEMPERATURE.....AROUND 68.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........95-100 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......SOUTH WINDS 5 TO 8 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......3100-3600 FT AGL DECREASING TO 0-200 FT AGL  
OVERNIGHT.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH.  
SMOKE DISPERSAL.....0-100 (POOR).  
PCPN AMOUNT.........NONE TO 0.03 IN.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).  
MAX TEMPERATURE.....AROUND 89.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........47-52 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH WINDS 5 TO 7 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......7500-8000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.  
SMOKE DISPERSAL.....300 (GOOD).  
PCPN AMOUNT.........NONE.  
 

 
   
FORECAST FOR DAYS 3 THROUGH 7
 
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE MID 60S. SOUTH WINDS UP TO  
5 MPH.    
SATURDAY
 
SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST WINDS 5 TO  
9 MPH.    
SATURDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE LOWER 60S. SOUTH WINDS  
UP TO 5 MPH.    
SUNDAY
 
SUNNY. HIGHS IN THE MID 80S. SOUTH WINDS 5 TO 9 MPH.    
SUNDAY NIGHT
 
MOSTLY CLEAR. LOWS AROUND 60. SOUTH WINDS 5 TO  
6 MPH.    
MONDAY
 
SUNNY. HIGHS IN THE MID 80S. SOUTH WINDS 5 TO 9 MPH.    
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS AROUND 60.    
TUESDAY
 
SUNNY. HIGHS IN THE LOWER 80S.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE UPPER 50S.    
WEDNESDAY
 
PARTLY SUNNY WITH SCATTERED SHOWERS AND THUNDERSTORMS.  
HIGHS IN THE MID 70S.  
 

 
 
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