036  
FNUS73 KGRR 251420  
FWSGRR  
 
SPOT FORECAST FOR RANGER / CRAPE...MI DNR  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
1020 AM EDT TUE APR 25 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON APRIL 25.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (616) 949-5150, IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
WINDS WILL BE THE MAIN PLAYER TODAY AT THE SITE AS WINDS FROM THE  
SOUTHEAST WILL BE UP TO 15 MPH WITH GUSTS AS HIGH AS 25 MPH AT TIMES  
THIS AFTERNOON. WE ARE EXPECTING DRY AIR TO MIX DOWN AND DRIVE RH'S  
DOWN TO AROUND 30 PERCENT.  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).  
TEMPERATURE.........61 AT IGNITION...MAX 72.  
RH..................48 PERCENT AT IGNITION...MIN 30 PERCENT.  
WIND (20 FT)........WINDS SOUTHEAST 10 TO 13 MPH...WITH A FEW GUSTS  
18 TO 22 MPH THIS AFTERNOON.  
MIXING HEIGHT.......2200 FT AGL AT IGNITION...OTHERWISE 3900-4400  
FT AGL.  
MIXING WINDS........SOUTH 25 MPH.  
SMOKE DISPERSAL.....500 /GOOD/ AT IGNITION. MAX...1100 /EXCELLENT/.  
HAINES INDEX........3 OR LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH AT IGNITION...MAX 4.  
 
TIME (EDT) 11 AM 1 PM 3 PM 5 PM 7 PM 9 PM  
SKY (%).........61 65 69 72 69 64  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
TEMP............59 64 69 72 69 65  
RH..............48 39 34 30 38 45  
20 FT WIND......SE 10 SE 12 SE 13 SE 13 SE 10 SE 8  
20 FT WIND GUST.15 20 22 22 15 15  
MIX HGT (FT)....2200 3500 4000 4300 3200 1800  
HAINES INDEX....2 3 4 4 4 3  
SMOKE DISPERSAL 500 800 1000 1100 600 300  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (65-75 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (70-80 PERCENT).  
TEMPERATURE.........MIN 55.  
RH..................MAX 86 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH.  
 

 
FORECASTER...JERUZAL  
REQUESTED BY...DON KLINGLER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1707748.0/GRR  
.EMAIL KLINGLERD@MICHIGAN.GOV  
 
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