264  
FXUS63 KIWX 060602  
AFDIWX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE NORTHERN INDIANA  
202 AM EDT SAT SEP 6 2025  
   
KEY MESSAGES  
 
- MAINLY DRY OVER THE NEXT 7 DAYS. ONLY A 20% CHANCE OF SHOWERS  
OR SPRINKLES NORTH OF US-6 SATURDAY NIGHT.  
 
- COOL TEMPERATURES THIS WEEKEND TREND WARMER, INTO THE 80S, BY  
THE MIDDLE OF NEXT WEEK.  
 
- DANGEROUS SWIMMING CONDITIONS EXPECTED FOR LAKE MICHIGAN  
BEACHES THROUGH SUNDAY.  
 
 
   
DISCUSSION  
 
ISSUED AT 244 PM EDT FRI SEP 5 2025  
 
A 992MB LOW IS SWIRLING OVER NORTHERN ONTARIO, ITS COLD FRONT NOW  
EAST OF OUR AREA. BREEZY WESTERLY WIND TODAY SUBSIDES NOT ONLY WITH  
A LOSS OF DAYTIME MIXING BUT WITH THE 45 KNOT 850-MB JET DEPARTING  
TO THE EAST AS WELL. TONIGHT, CLOUDS ASSOCIATED WITH A WEAK LOW  
MOVING THROUGH THE MID-MISSISSIPPI WILL PROVIDE SOME INSULATION  
OVERNIGHT HELPING TO KEEP TEMPERATURES FROM BOTTOMING OUT, BUT  
STILL NEARLY 10 DEGREES BELOW NORMAL.  
 
BROAD TROUGHING IN REMAINS IN PLACE THROUGH THE WEEKEND WITH THIS  
LARGE UPPER-LOW LINGERING OVER THE EASTERN GREAT LAKES. CAN'T RULE  
OUT LAKE EFFECT SHOWERS SATURDAY NIGHT OR SUNDAY AS AN EMBEDDED  
SHORTWAVE RIPPLES EAST ACROSS LAKE MICHIGAN. DURATION WILL BE  
BRIEF WITH HIGH PRESSURE QUICKLY COMING IN TO DISTURB  
EQUILIBRIUM LEVELS. HIGH PRESSURE REMAINS IN PLACE THROUGH THE  
COMING WEEK PROMISING DRY CONDITIONS (AND AN INCREASING RISK OF  
DROUGHT). TEMPERATURES WILL GRADUALLY WARM BACK INTO THE 80S BY  
MIDWEEK AS THE WESTERN US RIDGE FINALLY TRACKS EAST.  
 
 
   
AVIATION /06Z TAFS THROUGH 06Z SUNDAY/  
 
ISSUED AT 152 AM EDT SAT SEP 6 2025  
 
VFR CONDITIONS WITH WESTERLY WINDS ARE EXPECTED THROUGH THE  
PERIOD. GUSTS UP TO AROUND 22KTS ARE POSSIBLE DURING THE  
AFTERNOON HOURS. CLOUD COVER WILL BE VARIABLE BETWEEN 5-10KFT AT  
TIMES-WITH GENERAL HIGH CLOUDS AROUND.  
 
 
   
IWX WATCHES/WARNINGS/ADVISORIES  
 
IN...BEACH HAZARDS STATEMENT UNTIL 4 AM CDT EARLY THIS MORNING FOR  
INZ103.  
OH...NONE.  
MI...BEACH HAZARDS STATEMENT THROUGH SUNDAY AFTERNOON FOR MIZ177-  
277.  
MARINE...SMALL CRAFT ADVISORY UNTIL 5 PM EDT SUNDAY FOR LMZ043-046.  
 
 
 
 
 
DISCUSSION...BROWN  
AVIATION...MCD  
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