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

Air Quality Alert issued July 20 at 1:32PM EDT by NWS Marquette MI

Effective: Mon July 20, 2026, 1:32 PM
Expires: Tue July 21, 2026, 12:00 AM

The Michigan Department of Environmental Quality has issued an Air Quality Alert for Monday July 20, for elevated levels of fine particulates (PM2.5) due to wildfire smoke. Pollutants are expected to be in the Unhealthy and Unhealthy for Sensitive Groups range. This is a Statewide Air Quality Alert It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory conditions like asthma. Watch for symptoms including wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. You can help reduce air pollution by limiting activities, such as: -outdoor burning; -use of residential wood burning devices. Tips for households: -Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For up-to-date air quality data for Michigan visit the MiAir site: Michigan.gov/MiAir For up-to-date air quality data nationally visit EPAs Air Now site: AirNow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.

Small Craft Advisory issued July 20 at 11:04AM EDT until July 20 at 8:00PM EDT by NWS Marquette MI

Effective: Mon July 20, 2026, 11:04 AM
Expires: Mon July 20, 2026, 11:15 PM

* WHAT...For the Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 30 kt and waves 1 to 4 ft occurring. For the Gale Watch, northwest winds 15 to 25 kt with gusts up to 35 kt and waves 4 to 7 ft possible. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Gale Watch, from Tuesday morning through late Tuesday night. * IMPACTS...Strong winds can cause hazardous waves which could capsize or damage vessels and reduce visibility.

Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and waves.

Gale Watch issued July 20 at 11:04AM EDT until July 22 at 2:00AM EDT by NWS Marquette MI

Effective: Mon July 20, 2026, 11:04 AM
Expires: Mon July 20, 2026, 11:15 PM

* WHAT...For the Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 30 kt and waves 1 to 4 ft occurring. For the Gale Watch, northwest winds 15 to 25 kt with gusts up to 35 kt and waves 4 to 7 ft possible. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Gale Watch, from Tuesday morning through late Tuesday night. * IMPACTS...Strong winds can cause hazardous waves which could capsize or damage vessels and reduce visibility.

Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and waves.

Small Craft Advisory issued July 20 at 3:00PM EDT until July 21 at 8:00AM EDT by NWS Marquette MI

Effective: Mon July 20, 2026, 3:00 PM
Expires: Tue July 21, 2026, 3:00 AM

* WHAT...For the Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Gale Warning, northwest winds 15 to 20 kt with gusts up to 35 kt and waves 3 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 3:00PM EDT until July 22 at 2:00AM EDT by NWS Marquette MI

Effective: Mon July 20, 2026, 3:00 PM
Expires: Tue July 21, 2026, 3:00 AM

* WHAT...For the Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Gale Warning, northwest winds 15 to 20 kt with gusts up to 35 kt and waves 3 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.