Marine Forecast
Issued 06:30 PM EST 21 December 2025
Tonight and Monday.
Wind west 20 knots diminishing to west 15 this evening then
backing to southwest 20 late overnight. Wind diminishing to south 10 Monday
afternoon then increasing to south 15 Monday evening.
Rain or snow Monday evening. Visibility 1 mile or less in
precipitation.
Strong wind warning program has ended for the season.
Winds
Issued 06:30 PM EST 21 December 2025
Tonight and Monday.
Wind west 20 knots diminishing to west 15 this evening then
backing to southwest 20 late overnight. Wind diminishing to south 10 Monday
afternoon then increasing to south 15 Monday evening.
Strong wind warning program has ended for the season.
Waves
Issued 06:30 PM EST 21 December 2025
Tonight and Monday.
Waves 1 metre building to 1 to 1.5 early Monday morning then
subsiding to 0.5 to 1 Monday evening.
Weather & Visibility
Issued 06:30 PM EST 21 December 2025
Tonight and Monday.
Rain or snow Monday evening. Visibility 1 mile or less in
precipitation.
Ice ForecastsIssued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
No watches or warnings in effect.
Technical Marine SynopsisIssued 6:30 PM EST 21 December 2025 Tonight and Monday At 6:30 p.m. EST tonight ridge located on a line north-south over Lake Michigan. By 6:30 p.m. EST Monday ridge located on a line northeast-southwest over the Eastern Seaboard.
By 6:30 p.m. EST Monday approaching trough located on a line north-south over Minnesota.
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