Marine Weather for LS 140

Active Advisory: (US Severe Weather)
Forecast as of 3:53 am CDT on October 21, 2019
Small Craft Advisory in effect until 9 am CDT this morning
Gale Warning in effect from 9 am CDT this morning through this evening
Grand Portage To Grand Marais Mn-
Grand Marais To Taconite Harbor Mn-
Northeast wind 20 to 25 knots rising to gales to 40 knots in the afternoon. Slight chance of rain late in the morning. Rain in the afternoon. Waves 4 to 6 feet building to 9 to 14 feet. Waves occasionally to 18 feet.
East gales to 35 knots with storm force gusts to around 45 knots easing to 20 to 25 knots with gales to around 35 knots late in the evening, then becoming southeast 10 to 15 knots after midnight. Patchy fog through the night. Rain and slight chance of thunderstorms in the evening. Rain likely after midnight. Waves 10 to 15 feet subsiding to 5 to 8 feet. Waves occasionally to 19 feet.
South wind 10 to 15 knots becoming west with gusts to around 25 knots in the afternoon. Rain likely. Waves 4 to 6 feet subsiding to 2 to 4 feet in the afternoon. Waves occasionally to 7 feet. A Small Craft Advisory may be needed.
Tuesday Night
Northwest wind 15 to 20 knots. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Waves 1 to 3 feet.

Watches & Warnings

Small Craft Advisory, Gale Warning
Issued: 3:52 AM CDT Oct. 21, 2019 – National Weather Service

... Small Craft Advisory remains in effect until 9 am CDT this
... Gale Warning remains in effect from 9 am this morning to 9 PM
CDT this evening...

* sustained winds... northeast 25 to 35 knots.

* Waves... 14 to 18 feet.

* Wind gusts... up to 45 knots.

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 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 22 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Less experienced mariners and those operating smaller vessels
should avoid navigating in these conditions.

Marine Weather

Marine Weather Links

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Waters beyond five nautical miles of shore on Lake Michigan

Lake Huron forecast beyond five nautical miles from shore

Marine & Boating Location Search

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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 46 °F 2.62 ft
Portage Canal 45023 48 °F 1.64 ft
Click the Station ID for daily observations and history.

C-MAN Station Information

Place ID Water Temp Wave Height
Rock of Ages, MI ROAM4
Devils Island, WI DISW3
Passage Island, MI PILM4