466  
FXUS63 KGRR 232302  
AFDGRR  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
602 PM EST THU JAN 23 2025  
   
KEY MESSAGES
 
 
- LAKE EFFECT WINDS DOWN OVERNIGHT  
 
- TEMPS AVERAGING CLOSER TO NORMAL AFTER FRIDAY, SNOW SHOWERS AND  
WINDY AT TIMES  
 

 
   
DISCUSSION
 
 
ISSUED AT 335 PM EST THU JAN 23 2025  
 
- LAKE EFFECT WINDS DOWN OVERNIGHT  
 
NORTHWEST FLOW LAKE EFFECT SNOW IN THE WAKE OF THIS MORNING'S  
COLD FRONT HAS BEEN SPREADING FARTHER INLAND DUE TO SLIGHT  
BACKING OF THE LOW LEVEL FLOW AND DIURNAL EFFECTS. THE SNOW  
SHOWERS NOW LOOK MORE DISORGANIZED AND LESS FOCUSED THAN EARLIER,  
LIMITING ACCUMULATION RATES. AFTER SUNSET THOUGH THE BANDS SHOULD  
BECOME FOCUSED TO MAINLY NEAR AND WEST OF 131 AGAIN AS THE FLOW  
WEAKENS. ADDITIONAL (LOCALIZED) ACCUMULATIONS OF 1 TO 3" ARE  
EXPECTED TONIGHT BEFORE THE SNOW GRADUALLY DIMINISHES OVERNIGHT  
WITH ARRIVAL OF SFC RIDGING. WILL KEEP THE WINTER WEATHER  
ADVISORY ALONG THE LAKESHORE GOING THROUGH THE EVENING COMMUTE.  
 
SCATTERED LIGHT SNOW SHOWERS WILL PROBABLY LINGER INTO FRIDAY  
MORNING THEN DIMINISH TO FLURRIES OR END IN THE AFTERNOON WHILE  
SPREADING BACK INLAND. ONLY A DUSTING OF NEW SNOW EXPECTED BUT  
STILL ON THE CHILLY SIDE FRIDAY WITH HIGHS NEAR 20.  
 
- TEMPS AVERAGING CLOSER TO NORMAL AFTER FRIDAY, SNOW SHOWERS AND  
WINDY AT TIMES  
 
FOR THE WEEKEND INTO NEXT WEEK THE PATTERN LOOKS LESS ACTIVE AND  
NO ARCTIC OUTBREAKS ARE EXPECTED. THE FLOW ALOFT IS FLAT/ZONAL  
OVER THE WEEKEND AND NEXT WEEK WE ARE STILL UNDER THE INFLUENCE  
OF THE NRN STREAM BUT IT DOES NOT DIP AS FAR SOUTH. THERE'S A FEW  
CLIPPERS IN THE NORTHWEST FLOW ALOFT THAT WILL IMPACT US WITH  
SNOW SHOWERS AND BREEZY CONDITIONS AT TIMES BUT GENERALLY ONLY  
LIGHT ACCUMULATIONS ARE EXPECTED. THE OTHER IMPACT WILL BE FOR  
TEMPERATURE SWINGS AHEAD AND BEHIND PASSING COLD FRONTS.  
 
THE NEXT CLIPPER BRINGS ANOTHER SOUTHWEST FLOW LAKE ENHANCED EVENT  
FOR LATE FRIDAY NIGHT INTO SATURDAY, WITH 1-3" ACCUMS ANTICIPATED  
FOR THE SAME AREA AS YESTERDAY'S WARNING (NORTH OF HOLLAND/GRAND  
RAPIDS). THAT IS FOLLOWED BY WESTERLY FLOW LAKE EFFECT FOR  
SATURDAY NIGHT INTO SUNDAY AND ANOTHER LOCAL INCH OR TWO. BRISK  
WEST WINDS AND COLDER TEMPS FOLLOW FOR SUNDAY BEHIND SATURDAY  
NIGHT'S COLD FRONTAL PASSAGE.  
 
A STRONGER CLIPPER TRACKING NORTH OF LAKE SUPERIOR ON MONDAY  
BRINGS FAIRLY STRONG WESTERLY WINDS TO THE AREA WITH GUSTS OF 35  
TO 40 MPH POSSIBLE. THE COLD FRONT ASSOCIATED WITH THAT CLIPPER  
DROPS SOUTH THROUGH THE AREA ON TUESDAY AND MAY BRING ANOTHER  
ROUND OF LIGHT SNOW SHOWERS THEN.  
 

 
   
AVIATION /00Z TAFS THROUGH 00Z SATURDAY/
 
 
ISSUED AT 602 PM EST THU JAN 23 2025  
 
A MIX OF MVFR/VFR CONDITIONS WILL CONTINUE TONIGHT WITH MVFR MOST  
PREVALENT AT OUR WESTERN TERMINALS DUE TO LINGERING SNOW SHOWERS  
AND LOW CLOUDS OVERNIGHT. THEN FOR FRIDAY WE EXPECT PRIMARILY VFR  
CONDITIONS WITH LINGERING FLURRIES. HOWEVER SOME PATCHY MVFR WILL  
STILL LINGER FRIDAY DUE TO LINGERING LOW CLOUDS AND A FEW LIGHT  
SNOW SHOWERS.  
 

 
   
GRR WATCHES/WARNINGS/ADVISORIES
 
 
MI...WINTER WEATHER ADVISORY UNTIL 7 PM EST THIS EVENING FOR MIZ037-  
043-050-056-064-071-072.  
MARINE...SMALL CRAFT ADVISORY UNTIL 4 AM EST FRIDAY FOR LMZ844>849.  
 

 
 

 
 
DISCUSSION...MEADE  
AVIATION...LAURENS  
 
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