Marine Weather for LS 240

Active Advisory: (US Severe Weather)
Forecast as of 2:33 am CST on December 11, 2019/
Heavy freezing spray warning in effect through this evening
Small Craft Advisory in effect through this evening
Saxon Harbor Wi To Black River Mi-
Black River To Ontonagon Mi-
Rest Of Tonight
West wind 20 to 25 knots with gale force gusts up to 34 knots. Periods of snow showers. Heavy freezing spray. Waves 6 to 9 feet occasionally to 11 feet.
Wednesday
West wind 20 to 25 knots becoming 15 to 25 knots by mid afternoon. Becoming partly cloudy by mid afternoon. Periods of snow showers early, then scattered snow showers. Heavy freezing spray through the day. Waves subsiding to 3 to 6 feet occasionally to 8 feet.
Wednesday Night
Southwest wind 15 to 20 knots backing south 10 to 15 knots after midnight. Mostly cloudy. Freezing spray in the evening. A slight chance of snow showers in the evening, then a chance of snow showers after midnight. Waves subsiding to 1 to 2 feet.
Thursday
Southeast wind less than 10 knots backing east in the afternoon. Cloudy. Snow showers likely in the morning, then a chance of snow showers in the afternoon. Waves 1 to 2 feet.

Watches & Warnings

Ice Accretion Warning, Small Craft Advisory
Issued: 9:51 PM CST Dec. 10, 2019 – National Weather Service

... Heavy freezing spray warning remains in effect until 7 PM EST
/6 PM CST/ Wednesday...
... Small Craft Advisory remains in effect until 7 PM EST /6 PM
CST/ Wednesday...

* what... heavy freezing spray at a rate of 2 cm per hour or
greater occurring, and may rapidly accumulate on vessels. West
winds 20 to 30 kt and waves 5 to 8 feet occurring.

* Where... Black River to Ontonagon mi and Saxon Harbor WI to
Black River mi.

* When... until 7 PM EST /6 PM CST/ Wednesday.

* Impacts... operating a vessel in heavy freezing spray is
hazardous. Freezing spray may render mechanical and electronic
components inoperative. Rapid ice accretion on decks and
superstructures may result in a catastrophic loss of
stability. Conditions will be hazardous to small craft.

Precautionary/preparedness actions...

Mariners should prepare for dangerous accumulation of ice on
their vessel. If possible, remain in port, avoid the warning area
or conduct mitigation.

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.






Marine Weather

Marine Weather Links

Waters within five nautical miles of shore on Lake Superior

Waters within five nautical miles of shore

Waters beyond five nautical miles of shore on Lake Superior

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

Waters beyond five nautical miles of shore on Lake Michigan

Lake Huron forecast beyond five nautical miles from shore

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
WEST SUPERIOR 30NM NE of Outer Island, WI 45006 36 °F
-
Click the Station ID for daily observations and history.

C-MAN Station Information

Place ID Water Temp Wave Height
Devils Island, WI DISW3
-
-
Rock of Ages, MI ROAM4
-
-