Marine Weather and Tide Forecast for Constantine, MI

DISCUSSION
Issued at 300 AM EDT Mon Apr 21 2025

Surface low is occluding over far northwest IL this morning. The remaining warm front is south of US 24, primarily seen in surface obs via dew points in the 50s. Our drier, more stable air mass as resulted in a weakening line of showers with only a few isolated storms along the I-69 corridor. The remaining rain shield will continue to track northeast this morning, exiting northwest Ohio soon after daybreak.

Breezy once more today as the low is slow to move out. As overcast skies scatter out, we could mix down a few wind gusts of 40 mph.
Otherwise, westerly wind gusts of 30 to 35 mph will be most common today. Areas west of I-69 will see their high temperatures this morning before the occluded front marches through. Tonight, lows in the upper 30s are anticipated across southern MI. Wind decouples late which could delay the onset of frost in what will otherwise .
be a favorable environment should lows crash farther than the advertised 39 degrees.

A weak shortwave moves across Michigan Tuesday night bringing the chance for showers and maybe a thunderstorm primarily north of US 30. High pressure is briefly established thereafter, moving off the Northeast US coast by Thursday night. This is when POPs increase one more as a broad trough arrives over the Northern Plains. Farther south, a shortwave ejecting from the Four Corners lifts northeast as it encounters a Southeast US ridge. These disturbances work to bring numerous rain chances to the forecast Thursday evening through Saturday morning. 500-mb heights on the rise Wednesday and Thursday will push afternoon highs toward 80 degrees.

AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
Issued at 553 AM EDT Mon Apr 21 2025

It will be windy today in the wake of a cold front is currently passing through the area. Southwesterly winds will remain elevated into the daytime hours today with gusts as high as 30 to 35 kts possible. There could be a few pockets of VFR ceilings this morning before 15Z at KFWA before the cold front comes through, but then clouds thicken up again. It will be dry today but clouds could take awhile to mix out as a trough pivots through the area, but a gradual improvement from MVFR to low end VFR ceilings is expected by late afternoon. Winds will slowly diminish after sunset tonight as skies clear.

IWX WATCHES/WARNINGS/ADVISORIES
IN...None.
OH...None.
MI...None.
MARINE...Gale Warning until 8 PM EDT this evening for LMZ043-046.