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 19 at 9:00AM EDT by NWS Marquette MI

Effective: Sun July 19, 2026, 9:00 AM
Expires: Mon July 20, 2026, 4:00 PM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert for July 19 and July 20, 2026, for elevated levels of fine particulate due to wildfire smoke. Concentrations on Sunday will range from Unhealthy for Sensitive Groups (USG) in lower peninsula to Unhealthy across the upper peninsula. On Monday USG concentrations are expected statewide. This is a Statewide Air Quality Alert Another smoke plume has settled over the region due to wildfires in Canada. The highest levels of fine particulate will be across the upper peninsula on Sunday. We expect the increased pollution to continue into Monday; however, levels will improve during the day as our winds shift to a southerly direction. With smoke lingering across the state, ozone also has the potential to increase quickly. 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: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental- health/your-health- and-wildfire-smoke Air Quality Alert Michigan Department of Environment, Great Lakes, and Energy July 19, 2026

Dense Smoke Advisory issued July 19 at 2:43PM EDT until July 20 at 8:00AM EDT by NWS Marquette MI

Effective: Sun July 19, 2026, 2:43 PM
Expires: Mon July 20, 2026, 2:45 AM

* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft expected. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Dense Smoke Advisory, until 8 AM EDT Monday. For the Small Craft Advisory, from 11 AM to 8 PM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.

Small Craft Advisory issued July 19 at 2:43PM EDT until July 20 at 8:00PM EDT by NWS Marquette MI

Effective: Sun July 19, 2026, 2:43 PM
Expires: Mon July 20, 2026, 2:45 AM

* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft expected. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Dense Smoke Advisory, until 8 AM EDT Monday. For the Small Craft Advisory, from 11 AM to 8 PM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.

Small Craft Advisory issued July 19 at 2:43PM EDT until July 21 at 8:00AM EDT by NWS Marquette MI

Effective: Sun July 19, 2026, 2:43 PM
Expires: Mon July 20, 2026, 2:45 AM

* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft expected. Expect a winds shift to the northwest late Monday night. * WHERE...Point Isabelle to Lower Entrance of Portage Canal MI, Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays and Huron Islands to Marquette MI. * WHEN...For the Dense Smoke Advisory, until 8 AM EDT Monday. For the Small Craft Advisory, from 5 AM Monday to 8 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.

Dense Smoke Advisory issued July 19 at 2:43PM EDT until July 20 at 8:00AM EDT by NWS Marquette MI

Effective: Sun July 19, 2026, 2:43 PM
Expires: Mon July 20, 2026, 2:45 AM

* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft expected. Expect a winds shift to the northwest late Monday night. * WHERE...Point Isabelle to Lower Entrance of Portage Canal MI, Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays and Huron Islands to Marquette MI. * WHEN...For the Dense Smoke Advisory, until 8 AM EDT Monday. For the Small Craft Advisory, from 5 AM Monday to 8 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.