Marine Weather and Tide Forecast for Michigan City, IN

DISCUSSION
Issued at 122 PM EST Mon Dec 15 2025

Warming temps remain the story through Thursday as pacific air floods the lower 48 under a more progressive, quasi-zonal, flow regime. Several shortwaves will track east within this flow, with a Tuesday night impulse through the northern Great Lakes sending a weakening front into the area early Wednesday. Height falls and ascent with the upper wave does clip the area, though most of this forcing will go to mid-upper level saturation with a dry forecast retained given a notable dry layer below roughly 700 mb.

The next pacific wave will be much more amplified encouraging cyclogenesis east through the northern Great Lakes Thursday into Thursday night. This will draw some gulf moisture northward with periods of rain anticipated along and in advance of a trailing cold front during the day on Thursday. A brief shot of gusty winds and chances for snow showers then swing through on the backside of the low into Thursday night and Friday.

AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/
Issued at 604 PM EST Mon Dec 15 2025

VFR conditions are expected through the remainder of this TAF forecast for both KSBN and KFWA. A disturbance moving over the northern Great Lakes/southern Canada will bring some mid to high level clouds across both terminals overnight through Tuesday afternoon along with some short lived gusty southwest winds, gusts up to 20 kts, after 16z Tue which are expected to begin to trend lower by the end of this TAF period.

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