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 17 at 10:39AM EDT by NWS Marquette MI

Effective: Fri July 17, 2026, 10:39 AM
Expires: Sat July 18, 2026, 12:00 PM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert for July 17 and July 18 2026, for elevated levels of fine particulate due to wildfire smoke. Concentrations on Friday will range from Very Unhealthy in southern areas to Hazardous in the north. On Saturday concentrations will range from Unhealthy to Sensitive Groups (USG) in the south to Very Unhealthy in northern portions of the state. This is a Statewide Air Quality Alert. Plumes of smoke from Canadian wildfires continue to drift across the region. Elevated fine particulate due to the smoke will continue through Saturday. The threat of increased ozone may come into play Saturday as well. Everyone should seek cleaner air indoors and keep activity levels low. While indoors, take action to improve the indoor air quality such as: - Close windows and minimize opening of doors. - If HVAC systems are not equipped with MERV-13 filters or higher, use portable air cleaners. - Avoid activities that make indoor air quality worse such as burning candles, using vacuums without a HEPA filter, using gas stoves more than necessary, smoking, and spraying aerosol products. If you must be outdoors for short periods of time: - Wear an N95 or P100 respirator marked with NIOSH. The respirator should fit tightly, collapse as you breathe in and not let air in from the sides. - Do not use masks for children under age 2. 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 EPA's Air Now site: https://www.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. Air Quality Alert Michigan Department of Environment, Great Lakes, and Energy July 17 2026

Small Craft Advisory issued July 17 at 3:05PM EDT until July 18 at 6:00PM EDT by NWS Marquette MI

Effective: Fri July 17, 2026, 3:05 PM
Expires: Sat July 18, 2026, 3:15 AM

* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile at times. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Dense Smoke Advisory, until 6 AM EDT Saturday. For the Small Craft Advisory, from 4 AM to 6 PM EDT Saturday. * 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 17 at 3:05PM EDT until July 18 at 6:00AM EDT by NWS Marquette MI

Effective: Fri July 17, 2026, 3:05 PM
Expires: Sat July 18, 2026, 3:15 AM

* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile at times. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Dense Smoke Advisory, until 6 AM EDT Saturday. For the Small Craft Advisory, from 4 AM to 6 PM EDT Saturday. * 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 17 at 10:04PM EDT until July 18 at 6:00AM EDT by NWS Marquette MI

Effective: Fri July 17, 2026, 10:04 PM
Expires: Sat July 18, 2026, 10:15 AM

* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Dense Smoke Advisory, until 6 AM EDT Saturday. For the Small Craft Advisory, from 4 AM to 6 PM EDT Saturday. * 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 17 at 10:04PM EDT until July 18 at 6:00PM EDT by NWS Marquette MI

Effective: Fri July 17, 2026, 10:04 PM
Expires: Sat July 18, 2026, 10:15 AM

* WHAT...For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Dense Smoke Advisory, until 6 AM EDT Saturday. For the Small Craft Advisory, from 4 AM to 6 PM EDT Saturday. * 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.