425  
FXUS63 KIWX 311846  
AFDIWX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE NORTHERN INDIANA  
246 PM EDT SUN MAY 31 2020  
   
SYNOPSIS
 
 
ISSUED AT 246 PM EDT SUN MAY 31 2020  
 
A SIGNIFICANT WARMING TREND IS EXPECTED INTO MONDAY AND TUESDAY,  
WITH ONLY A LOW CHANCE FOR SHOWERS LATE MONDAY AND MONDAY NIGHT.  
HIGHS ON TUESDAY WILL REACH THE MID TO UPPER 80S. LATER TUESDAY  
NIGHT THROUGH WEDNESDAY EVENING WILL FEATURE INCREASING CHANCES  
FOR THUNDERSTORMS.  
 

 
   
SHORT TERM
 
(THIS EVENING THROUGH MONDAY NIGHT)  
ISSUED AT 246 PM EDT SUN MAY 31 2020  
 
VERY DRY/STABLE AIRMASS WILL REMAIN IN PLACE INTO TONIGHT AND MONDAY  
MORNING WITH SFC HIGH PRESSURE IN CONTROL. TIGHT THETA-E GRADIENT  
ON THE SOUTHERN FRINGE OF RETURNING SOUTHWESTERLY FLOW WILL FOLD  
OVER THE AREA FROM WEST TO EAST LATER MONDAY AFTERNOON THROUGH EARLY  
TUESDAY MORNING. THIS WAA SURGE IN CONJUNCTION WITH A NW FLOW  
IMPULSE WILL BRING AN INCREASE IN CLOUDS AND PERHAPS A FEW SHOWERS  
DURING THIS TIME. RETAINED LOW CHANCE POPS DURING THIS TIME, HIGHEST  
NORTH, AS MORE PRONOUNCED MOISTURE CONVERGENCE ON LEADING EDGE OF  
LLJ CORE BYPASSES NORTH. TRENDING WARMER OTHERWISE INTO MONDAY AND  
MONDAY NIGHT.  
 

 
   
LONG TERM
 
(TUESDAY THROUGH SUNDAY)  
ISSUED AT 246 PM EDT SUN MAY 31 2020  
 
WARM SECTOR BECOMES ESTABLISHED ON TUESDAY IN WAKE OF MONDAY NIGHT'S  
WARM FRONT MAKING FOR A HOT/BREEZY DAY. ATTENTION BY LATER  
TUESDAY NIGHT AND WEDNESDAY WILL TURN TO CONVECTION UPSTREAM  
ACROSS THE UPPER MIDWEST IN BRIEF RING OF FIRE SETUP. THIS  
ACTIVITY COULD TAKE AIM AT OUR AREA LATER TUESDAY NIGHT INTO  
WEDNESDAY MORNING, WITH POTENTIAL DEVELOPMENT ON THE COMPOSITE  
OUTFLOW BOUNDARY IN IN/OH WEDNESDAY AFTERNOON...LINGERING INTO  
WEDNESDAY NIGHT ACROSS SOUTHERN ZONES. THERE COULD BE A DAY 4  
SEVERE RISK IF THIS TIMES OUT JUST RIGHT AND THE UPSTREAM SYSTEM  
GROWS UPSCALE WITH AN ESTABLISHED COLD POOL. CONFIDENCE IS LOW AT  
THIS FCST RANGE BUT SOMETHING TO MONITOR GOING FORWARD.  
 

 
   
AVIATION
 
(FOR THE 18Z TAFS THROUGH 18Z MONDAY AFTERNOON)  
ISSUED AT 1222 PM EDT SUN MAY 31 2020  
 
VFR THROUGH THE PERIOD UNDER THE INFLUENCE OF BROAD RIDGING SFC AND  
ALOFT.  
 

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

 
 

 
 
SYNOPSIS...STEINWEDEL  
SHORT TERM...STEINWEDEL  
LONG TERM...STEINWEDEL  
AVIATION...T  
 
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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