Marine Weather for LM 741

Active Advisory: (US Severe Weather)
Forecast as of 3:17 am CDT on October 20, 2019
Wilmette Harbor To Northerly Island-
Northerly Island To Calumet Harbor-
Today
Northwest winds 5 to 10 kt becoming northeast in the afternoon. Partly sunny. Waves 1 ft or less.
Tonight
East winds 10 to 15 kt becoming southeast 10 to 20 kt after midnight. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 to 3 ft building to 2 to 4 ft after midnight.
Monday
Southeast winds to 30 kt becoming southwest in the afternoon. Rain showers and slight chance of thunderstorms. Waves 3 to 6 ft occasionally to 8 ft. A Small Craft Advisory will likely be needed.
Monday Night
Southwest winds to 30 kt. Slight chance of showers in the evening. Waves 1 to 3 ft building to 2 to 4 ft after midnight. A Small Craft Advisory will likely be needed.

Watches & Warnings

Marine Fog Advisory, Small Craft Advisory, Gale Warning
Issued: 5:50 PM CDT Oct. 20, 2019 – National Weather Service

... Dense fog advisory in effect until 4 am CDT Monday...
... Small Craft Advisory remains in effect from 10 am Monday to
10 am CDT Tuesday...
... Gale Warning remains in effect from 10 am to 10 PM CDT
Tuesday...

The National Weather Service in Chicago has issued a dense fog
advisory, which is in effect until 4 am CDT Monday.

* Winds... southeast to 30 kts Monday morning, becoming southwest
in the afternoon. West southwest gales 35 to 40 kts developing
on Tuesday.

* Significant waves... to 9 ft on Monday and to 5 ft on Tuesday.

* Occasional waves... to 12 ft on Monday.

* Visibility... one quarter mile or less.

Precautionary/preparedness actions...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
Harbor prior to the onset of gale conditions.

A Small Craft Advisory means that wind speeds of 21 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners... especially those operating smaller
vessels should avoid navigating in these conditions.

A dense fog advisory means visibilities will frequently be
reduced to less than one mile. Inexperienced mariners...
especially those operating smaller vessels should avoid
navigating in these conditions.







Marine Weather

Marine Weather Links

Waters within five nautical miles of shore

Waters within five nautical miles of shore on lakes Huron... Michigan and Superior

Waters within five nautical miles of shore on Lake Michigan

Waters within five nautical miles of shore on Lake Michigan

Waters beyond five nautical miles of shore on Lake Michigan

Waters within five nautical miles of shore on Lake Michigan

Waters within five nautical miles of shore on Lake Michigan

Waters within five nautical miles of shore on Lake Michigan

Lake Huron forecast beyond five nautical miles from shore

Waters within five nautical miles of shore

Surf City NC to South Santee River SC out 20 nm

Waters within five nautical miles of shore on Lake Erie

Waters beyond five nautical miles of shore on Lake Erie

Waters within five nautical miles of shore

Waters beyond five nautical miles of shore on Lake Ontario

Marine & Boating Location Search

Enter a coastal zip code for marine weather.

Coastal Water Temperatures

Place Temperature
No Stations Reporting

Open Sea Buoy Information

Place ID Sea Temp Wave Height
SOUTH MICHIGAN 43NM East Southeast of Milwaukee, WI 45007 56 °F
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Grand Haven Michigan 45011
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Click the Station ID for daily observations and history.