Station Name: EAST SUPERIOR -70 NM NE Marquette, MI
Station Type: Other
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
Offshore
Copper Harbor, MI 49918
Keweenaw County

GPS Coordinates: 47.585, -86.585

Nearby Water Temperatures

Small Craft Advisory issued July 20 at 10:28PM EDT until July 21 at 8:00AM EDT by NWS Marquette MI

Effective: Mon July 20, 2026, 10:28 PM
Expires: Tue July 21, 2026, 10:30 AM

* WHAT...For the Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 kt and waves 3 to 5 ft occurring. For the Gale Warning, northwest winds 15 to 20 kt with gusts up to 35 kt and waves 4 to 6 ft expected. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Small Craft Advisory, until 8 AM EDT Tuesday. For the Gale Warning, from 8 AM Tuesday to 2 AM EDT Wednesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.

Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions.

Gale Warning issued July 20 at 10:28PM EDT until July 22 at 2:00AM EDT by NWS Marquette MI

Effective: Mon July 20, 2026, 10:28 PM
Expires: Tue July 21, 2026, 10:30 AM

* WHAT...For the Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 kt and waves 3 to 5 ft occurring. For the Gale Warning, northwest winds 15 to 20 kt with gusts up to 35 kt and waves 4 to 6 ft expected. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Small Craft Advisory, until 8 AM EDT Tuesday. For the Gale Warning, from 8 AM Tuesday to 2 AM EDT Wednesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.

Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions.

Small Craft Advisory issued July 21 at 3:37AM EDT until July 21 at 8:00AM EDT by NWS Marquette MI

Effective: Tue July 21, 2026, 3:37 AM
Expires: Tue July 21, 2026, 3:45 PM

* WHAT...For the Small Craft Advisory, west winds 15 to 20 kt with gusts up to 25 kt and waves 3 to 5 ft occurring. For the Gale Warning, northwest winds 15 to 25 kt with gusts up to 35 kt and waves 4 to 7 ft expected. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Small Craft Advisory, until 8 AM EDT this morning. For the Gale Warning, from 8 AM this morning to 8 PM EDT this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.

Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions.

Gale Warning issued July 21 at 3:37AM EDT until July 21 at 8:00PM EDT by NWS Marquette MI

Effective: Tue July 21, 2026, 3:37 AM
Expires: Tue July 21, 2026, 3:45 PM

* WHAT...For the Small Craft Advisory, west winds 15 to 20 kt with gusts up to 25 kt and waves 3 to 5 ft occurring. For the Gale Warning, northwest winds 15 to 25 kt with gusts up to 35 kt and waves 4 to 7 ft expected. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Small Craft Advisory, until 8 AM EDT this morning. For the Gale Warning, from 8 AM this morning to 8 PM EDT this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.

Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions.