282 
FXUS63 KIWX 261710
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
110 PM EDT Sun Oct 26 2025

.KEY MESSAGES...

- Cool and dry conditions prevail through Monday with highs near
  60 and lows in the mid to upper 30s.

- Rain is possible during the middle of the week with cool
  temperatures continuing.

&&

.DISCUSSION...
Issued at 255 AM EDT Sun Oct 26 2025

Midlevel shortwave responsible for added cloud cover aloft will 
continue to drift south through the morning. Expect a slow but 
steady clearing trend from NE to SW through the morning with mostly 
sunny skies by afternoon. This yields highs near 60F despite a cool 
easterly low level flow. Dry conditions and mostly clear skies are 
expected to prevail through Monday given a strong ridge locked over 
the Great Lakes. Highs remain in the upper 50s to near 60F with lows 
in the mid/upper 30s. The growing season has officially ended so no 
frost mentioned in the forecast going forward.

A complicated upper level pattern evolution is still expected for 
the middle and end of the week as three distinct upper lows 
eventually merge into one large upper low over the eastern CONUS. 
The deterministic GFS continues to be a dry outlier in suggesting 
the associated precip shield will pivot around our CWA. ECMWF, 
Canadian, and numerous ensemble solutions paint a much different 
picture though with deformation zone pivoting over at least our SE 
half resulting in a prolonged period of moderate rain Wed morning 
through at least Thu night. Confidence remains low given such a 
complicated upper air pattern. Delayed the start time of precip a 
bit as Tue will likely remain mostly dry but otherwise did not 
deviate far from NBM initialization. This does lead to very low 
confidence on precip chances for Halloween but temps do appear to 
remain on the cool side (particularly highs) regardless of precip 
chances.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 106 PM EDT Sun Oct 26 2025

Persistent east flow is expected through the TAF period on the
southern edge of high pressure over the eastern Great Lakes. 
Cannot rule out patchy ground fog prior to daybreak, with some 
Lake Erie moisture transport.

&&

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

&&

$$

DISCUSSION...AGD
AVIATION...Brown