FXUS63 KIWX 200803
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
403 AM EDT Wed May 20 2026

.KEY MESSAGES...

- Cooler and drier today into Thursday with highs only in the
  60s.
 
- Next chance for rain and a few storms arrive Friday.

- Gradual warming with highs in the 70s with periods of showers
  and thunderstorms this weekend into the beginning of next 
  week.

&&

.DISCUSSION...
Issued at 336 AM EDT Wed May 20 2026

Cold front has just about pushed completely through the area
overnight with a few light sprinkles accompanying the boundary.
A trace of precipitation was received here at the weather
office with the showers. Today will run about 20 degrees cooler
in most areas with drier and cooler airmass with ridging 
pushing in behind the front today. Dew points will go from the 
current values in the 50s to the 30s and 40s by this evening.
Breezy to gusty conditions will prevail today and will be 
messaging hazardous beach conditions possible along Lake 
Michigan shoreline areas through this evening. High 
temperatures today through Friday will only get into the mid to 
upper 60s across the area. Perhaps a few locations may see the 
low 70s by Friday. Lows overnight tonight and again on Friday 
morning will drop mainly into the 40s. 

A slow moving shortwave moves northeastward on Friday within 
the southwesterly flow on the backside of the ridging that will 
slide eastward. This will increase chances for rain showers and
even some embedded afternoon/evening thundershowers. This
activity will continue into the weekend with periods of showers
and afternoon thundershowers into the beginning of next week
with increasing temperatures due to thermal ridging over the
region. Highs will gradually increase Saturday through the
middle of next week with highs in the 70s Saturday through 
Monday, a few areas will flirty with the lower 80s Monday before
warming further with highs into the 80s for most locations on 
Tuesday and Wednesday. At this time, the expectation will not 
be for a complete washout this holiday weekend but with 
convective showers it will be hard to pin down the exact timing 
and locations that do receive them. 
 
&&

.AVIATION /06Z TAFS THROUGH 06Z THURSDAY/...
Issued at 114 AM EDT Wed May 20 2026

VFR conditions expected through the remainder of this TAF
period. A few light sprinkles possible this morning before 
shortwave ridging pushes into the region. Northerly winds with
gusts up to 20 kts possible after 17z Wed.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...Beach Hazards Statement from 7 AM CDT this morning through 
     late tonight for INZ103.
OH...None.
MI...Beach Hazards Statement from 8 AM EDT this morning through 
     late tonight for MIZ177-277.
MARINE...Small Craft Advisory from 8 AM this morning to 2 AM EDT 
     Thursday for LMZ043-046.

&&

$$

DISCUSSION...Andersen
AVIATION...Andersen