137  
FXUS63 KIWX 171639  
AFDIWX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE NORTHERN INDIANA  
1239 PM EDT WED AUG 17 2022  
   
SYNOPSIS
 
 
ISSUED AT 337 AM EDT WED AUG 17 2022  
 
MAINLY DRY WEATHER WILL CONTINUE THROUGH FRIDAY WITH A SLIGHT  
WARMING TREND FOR THE REMAINDER OF THE WORK WEEK. CHANCES OF  
SHOWERS AND THUNDERSTORMS WILL INCREASE FOR THE WEEKEND.  
 

 
   
SHORT TERM
 
(TODAY AND TONIGHT)  
ISSUED AT 337 AM EDT WED AUG 17 2022  
 
NEAR SEASONAL TEMPERATURES AND MAINLY DRY CONDITIONS WILL  
CONTINUE. THE ONLY EXCEPTION WILL BE A FEW AFTERNOON SHOWERS AND  
EVEN A THUNDERSTORM OR TWO EAST OF INTERSTATE 69 THIS AFTERNOON.  
A FEW SHOWERS AND THUNDERSTORMS MOVED THROUGH PARTS OF THE CWA  
YESTERDAY, THE COVERAGE SHOULD BE MUCH LESS TODAY AND FURTHER EAST  
THAN YESTERDAY. THE INCREASED CHANCES OF THE AFTERNOON SHOWERS AND  
THUNDERSTORMS IS THANKS TO A NORTHEAST UPPER LEVEL LOW INTRODUCING  
SOME LIFT AND INCREASING THE INSTABILITY OVER THE EASTERN PARTS  
OF THE CWA.  
 

 
   
LONG TERM
 
(THURSDAY THROUGH TUESDAY)  
ISSUED AT 337 AM EDT WED AUG 17 2022  
 
BY THURSDAY UPPER LEVEL SHORTWAVE RIDGING BEGINS TO MOVE INTO THE  
REGION FOLLOWED QUICKLY BY A DRY WEAK SHORTWAVE TROUGHING PUSHING  
INTO THE AREA ASSOCIATED WITH A NORTHERN PLAINS/UPPER MIDWEST  
UPPER LEVEL LOW. THIS UPPER LEVEL LOW WILL MOVE SLOWLY SOUTHEAST  
INTO THE LOWER GREAT LAKES BY SATURDAY AFTERNOON AND WILL HANG  
AROUND INTO THE BEGINNING OF NEXT WEEK. THE PRESENCE OF THE UPPER  
LEVEL LOW WILL BRING ENOUGH LIFT, INSTABILITY AND SOME MOISTURE TO  
INCREASE THE CHANCES OF RAIN AND THUNDERSTORMS AND GENERALLY  
UNSETTLED WEATHER AND SLIGHTLY COOLER THAN NORMAL TEMPERATURES  
THROUGH TUESDAY. THE BEST CHANCES OF RAIN/THUNDERSTORMS HOWEVER  
WILL BE SUNDAY AFTERNOON AS THE CENTER OF THE UPPER LOW SITS  
DIRECTLY OVER THE AREA. THE PROBABILISTIC FORECASTS BRING BETWEEN  
A 50 PERCENT AND 65 PERCENT CHANCE OF PRECIPITATION OF A TENTH OF  
AN INCH OR GREATER NEAR FORT WAYNE ON SUNDAY.  
 
AS THE TROUGH MOVES EAST, CHANCES OF PRECIPITATION WILL DECREASE  
INTO THE MIDDLE OF THE WEEK WHEN SHORTWAVE RIDGING RETURNS  
BRINGING DRIER AND A RETURN TO SLIGHTLY WARMER THAN NORMAL  
CONDITIONS.  
 

 
   
AVIATION
 
(FOR THE 18Z TAFS THROUGH 18Z THURSDAY AFTERNOON)  
ISSUED AT 1238 PM EDT WED AUG 17 2022  
 
QUIET WX WILL PERSIST THROUGH THE PERIOD AS THE CENTER OF A IA-  
WI-NRN MI SFC RIDGE GRADUALLY SINKS TOWARD THE AREA, AND ANY  
DIURNALLY DRIVEN SHOWER ACTIVITY REMAINS EAST OF THE TERMINALS  
DURING THE MID AFTERNOON THROUGH EARLY EVENING HOURS. WILL NEED  
TO MONITOR FOR SOME PATCHY/SHALLOW GROUND FOG OTHERWISE LATER  
TONIGHT UNDER MAINLY CLEAR SKIES AND LIGHT/VARIABLE WINDS.  
 

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

 
 

 
 
SYNOPSIS...ANDERSEN  
SHORT TERM...ANDERSEN  
LONG TERM...ANDERSEN  
AVIATION...STEINWEDEL  
 
VISIT US AT WWW.WEATHER.GOV/IWX  
 
FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:  
WWW.FACEBOOK.COM/NWSNORTHERNINDIANA  
WWW.TWITTER.COM/NWSIWX  
WWW.YOUTUBE.COM/NWSNORTHERNINDIANA  
 
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