121  
FXUS63 KIWX 272149  
AFDIWX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE NORTHERN INDIANA  
549 PM EDT FRI JUN 27 2025  
   
KEY MESSAGES  
 
- ISOLATED SHOWERS AND STORMS POSSIBLE TONIGHT.  
 
- HEAT AND HUMIDITY RETURNS ON SUNDAY AFTER A BRIEF REPRIEVE  
SATURDAY.  
 
- SHOWERS AND THUNDERSTORMS LIKELY ON MONDAY.  
 
- MORE SEASONABLE TEMPERATURES AND LOWER HUMIDITY VALUES  
EXPECTED TUESDAY AND BEYOND.  
 
 
   
UPDATE  
 
ISSUED AT 548 PM EDT FRI JUN 27 2025  
 
SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED AS EARLIER  
CONVECTION QUICKLY BECAME OUTFLOW DOMINANT AND FELL APART WITH  
EASTWARD PROGRESSION. STILL HAVE THE MAIN FRONTAL BOUNDARY TO  
DROP SOUTHEAST THROUGH THE AREA TONIGHT WHICH COULD STILL SPARK  
A FEW NON-SEVERE SHOWERS OR STORMS ALONG IT. A BRIEF BREAK FROM  
THE HEAT/HUMIDITY POST-FRONTAL OTHERWISE TOMORROW.  
 
 
   
DISCUSSION  
 
ISSUED AT 1221 PM EDT FRI JUN 27 2025  
 
A WEAKENING COLD FRONT WILL EVENTUALLY CONTINUE TO WORK ITS WAY  
THROUGH THE AREA TODAY. ADDITIONAL SHOWERS AND THUNDERSTORMS  
WILL BE EXPECTED (60-80% CHANCE) AS THIS FRONT MOVES THROUGH THE  
AREA. IN THE WARM SECTOR, SIMILAR ATMOSPHERIC CONDITIONS (AS  
FAR AS CAPE/SHEAR GOES) WILL BE IN PLACE ACROSS THE WARM SECTOR  
TODAY LIKE WE SAW YESTERDAY. FORCING ALONG AND AHEAD OF THE  
FRONT AS IT MOVES THROUGH WILL BE THE FOCUS FOR STORMS, HOWEVER,  
LIKE WE SAW YESTERDAY BUBBLY CONVECTION MIGHT GET GOING AT ANY  
TIME ONCE CONVECTIVE TEMPERATURES ARE REACHED. VISIBLE  
SATELLITE IMAGERY AS OF 1145AM ALREADY SUGGESTS CU FIELD IS  
DEVELOPING ACROSS THE SE HALF OF THE FORECAST AREA. STRONG/GUSTY  
WINDS, HEAVY RAIN, AND FREQUENT LIGHTNING WILL CONTINUE TO BE  
THE MAIN THREATS - ALTHOUGH LIKE WE SAW YESTERDAY SOME SMALL  
HAIL CAN'T BE RULED OUT WITH THE MORE ROBUST UPDRAFTS. WITH  
LARGE LOW-LEVEL LAPSE RATES AND ELEVATED DCAPE VALUES, LOCALIZED  
STRONG TO SEVERE WIND GUSTS WILL BE THE MAIN ISSUE. BY  
SATURDAY, TEMPERATURES WILL HAVE "COOLED" DOWN SLIGHTLY INTO THE  
LOW-MID 80S. RAIN CHANCES ACROSS THE SOUTHERN PORTION OF THE  
CWA HAS BACKED OFF A BIT, SO WE MAY HAVE A RELATIVELY DRY  
SATURDAY AFTER ALL.  
 
WARMER TEMPERATURES RETURN SUNDAY. HOWEVER, SURFACE HIGH  
PRESSURE BUILDING OVER THE CENTRAL PLAINS AND TROUGHINESS  
RETURNING TO ONTARIO/GREAT LAKES REGION WHICH WILL COOL US DOWN  
A LITTLE BIT FOR THE FIRST COUPLE OF JULY DAYS, ESPECIALLY AFTER  
ANOTHER FRONT MOVES THROUGH THE AREA ON MONDAY. THE ASSOCIATED  
SHORTWAVE WILL BRING WIDESPREAD RAINFALL TO THE REGION ON  
MONDAY. HOPEFULLY THE RETURN OF DEWPOINTS BACK IN THE 60S  
COMPARED TO THE 70S WE'VE BEEN EXPERIENCING WILL BE A WELCOME  
RELIEF.  
 
 
   
AVIATION /00Z TAFS THROUGH 00Z SATURDAY EVENING/  
 
ISSUED AT 548 PM EDT FRI JUN 27 2025  
 
COLD FRONT TO SLIDE THROUGH KSBN THIS EVENING AND KFWA OVERNIGHT  
WITH A LOW (20%) FOR AN ISOLATED SHOWER OR STORMS ALONG IT. VFR  
WITH LIGHT WINDS OTHERWISE THROUGH THE PERIOD OUTSIDE OF ANY  
SHOWER ACTIVITY.  
 
 
   
IWX WATCHES/WARNINGS/ADVISORIES  
 
IN...HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR INZ027-034.  
OH...HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR OHZ001-002-004-  
005-015-016-024-025.  
MI...NONE.  
MARINE...NONE.  
 
 
 
 
 
UPDATE...STEINWEDEL  
DISCUSSION...NORMAN  
AVIATION...STEINWEDEL  
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