617  
FXUS63 KIWX 192256  
AFDIWX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE NORTHERN INDIANA  
656 PM EDT FRI AUG 19 2022  
   
SYNOPSIS
 
 
ISSUED AT 255 PM EDT FRI AUG 19 2022  
 
HIGH PRESSURE WILL GIVE WAY TO A LOW PRESSURE SYSTEM ON SATURDAY  
BRINGING INCREASING CHANCES FOR SHOWERS AND PERHAPS A FEW  
THUNDERSTORMS AT TIMES THROUGH SUNDAY. HIGH PRESSURE RETURNS  
MONDAY BRINGING DRIER CONDITIONS ALONG WITH SEASONAL TEMPERATURES  
THROUGH MIDWEEK.  
 

 
   
SHORT TERM
 
(TONIGHT THROUGH SUNDAY)  
ISSUED AT 255 PM EDT FRI AUG 19 2022  
 
DEEP UPPER LOW OVER THE UPPER MIDWEST WILL SLOWLY OPEN EWD ACROSS  
THE GREAT LAKES THROUGH SUNDAY. GRADUAL INCREASE/DEEPENING IN LOW  
LEVEL RETURN MOISTURE PLUME AHEAD OF THIS FEATURE ALONG WITH  
INCREASED FORCING ALOFT SHOULD YIELD NUMEROUS SHOWERS/SCT THUNDER BY  
LATE AFTN EAST AND LATE EVENING WEST. OTHERWISE DIURNAL  
DESTABILIZATION SHOULD ALLOW SHOWERS TO BLOOM UNDER UPPER LOW SUNDAY.  
 

 
   
LONG TERM
 
(MONDAY THROUGH THURSDAY)  
ISSUED AT 255 PM EDT FRI AUG 19 2022  
 
UPPER SYS KICKS OUT QUICKLY MONDAY FOLLOWED BY BROAD SFC RIDGING  
THROUGH AT LEAST MIDWEEK IF NOT LONGER. THUS A RETURN TO DRY AND  
SEASONABLE WX EXPECTED.  
 

 
   
AVIATION
 
(FOR THE 00Z TAFS THROUGH 00Z SATURDAY EVENING)  
ISSUED AT 649 PM EDT FRI AUG 19 2022  
 
VFR CONDITIONS EXPECTED THROUGH THE OVERNIGHT HOURS AS AN  
APPROACHING STACKED LOW DIVES SE ACROSS THE MIDWEST. THIS LOW  
COULD BRING SCATTERED CONVECTION TO THE TERMINALS TOMORROW;  
AROUND 12Z FOR KSBN AND AROUND 18Z FOR KFWA. CONFIDENCE IS HIGHER  
FOR CONVECTION TO IMPACT KSBN GIVEN PROXIMITY TO THE SURFACE LOW  
WHILE CONVECTION MAY DEVELOP OVERHEAD OR JUST EAST OF THE TERMINAL  
DURING PEAK HEATING. SHOULD CONVECTION IMPACT THE TERMINAL  
DIRECTLY THEN EXPECT LOWERED VISBY AND ERRATIC WINDS.  
 

 
   
IWX WATCHES/WARNINGS/ADVISORIES
 
 
IN...NONE.  
MI...NONE.  
OH...NONE.  
LM...NONE.  

 
 

 
 
SYNOPSIS...T  
SHORT TERM...T  
LONG TERM...T  
AVIATION...CM  
 
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