Weather alerts for the NWS Northern Indiana forecast area

000
FXUS63 KIWX 281040
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
640 AM EDT Wed Oct 28 2026

.KEY MESSAGES...

- Warm and dry today with highs in the mid 70s.

- Very light rain is possible on Thursday followed by slightly
  cooler temperatures.

- More rain is possible over the weekend with the best chances
  on Sunday but forecast confidence for this period remains low.

&&

.DISCUSSION...
Issued at 226 AM EDT Wed Oct 28 2026

Another warm and tranquil day as ridge rebuilds behind departing
shortwave responsible for current mid/high clouds and virga. 
These clouds will scatter during the day and highs climb into 
the mid 70s for most given some light SW flow/WAA. Mild 
overnight lows expected given increasing SW gradient and clouds 
ahead of the next cold front. Only mid 50s expected in our NW 
zones. As previously mentioned, this cold front will feature a 
moderate prefrontal theta-e surge (thanks to a 30-40 kt LLJ) 
capable of finally moistening very dry/stable airmass that has 
been in place for quite some time. However, better mid and upper
level dynamics remain displaced well to our north. Decent 
1000-850mb convergence within a moderate theta-e ridge will be 
enough to spark a narrow line of light showers on Thu but total 
rain amounts will be very light (a few hundredths at best). The 
best chances will be in our northwest where better moisture and 
forcing reside. Areas south of US-24 likely remain dry. No 
thunderstorms expected given virtually no instability so overall
no impacts anticipated. Postfrontal airmass is cooler but not 
particularly cold given it is almost Halloween. Lows Thu night 
dip near 40F with highs on Fri in the 60s (still above normal).

Forecast details for the weekend and early next week remain 
uncertain. A subtropical Pacific jet streak/shortwave lifts into
the region in piecemeal fashion over the weekend followed by 
the eastward ejection (in some fashion) of a Pacific Northwest 
upper low. This is a convoluted mid/upper level pattern 
evolution that models are still struggling with immensely. The 
initial shortwave and theta-e surge could bring some light rain 
to our W/NW counties early Sat but CVA and moisture advection 
are both very meager. Any rain will be light and it could easily
remain entirely dry. These low chance PoP's extend into the 
early evening. Some light sprinkles can't be entirely ruled out 
for Sat evening activities but overall impacts should be 
minimal. Better rain chances arrive on Sun but even this is no 
slam dunk. Several guidance sources suggest the main trough and 
better moisture pass just to our S/SE. Attention then turns to 
large upper low migrating across the country. Models continue to
show an incredibly high degree of spread with how this upper 
low evolves. Expect we will get some more widespread/moderate 
rain out of it at some point but timing is very up in the air.

&&

.AVIATION /12Z TAFS THROUGH 12Z THURSDAY/...
Issued at 640 AM EDT Wed Oct 28 2026

Midlevel clouds associated with passing shortwave will slowly
scatter through the day. Dry low levels will ensure VFR through
the period. Clouds increase again Thursday morning as a cold
front approaches the region but any impact will be after this 
forecast period. Winds remain 10 kts or less.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.

&&

$$

DISCUSSION...AGD
AVIATION...AGD