Localized hypoxic upwelling is possible this weekend along the Ohio coast. A narrow band of hypoxic waters (<2 mg L-1 dissolved oxygen) is located just offshore of the Ohio coast from Sandusky to east of Ashtabula. Southerly winds on Friday may cause this water to move onshore, causing localized hypoxic events. Southwest winds on the weekend may cause a shift in risk to Sandusky area through Monday. While the western basin does not typically have hypoxic events because winds tend to keep the shallow basin mixed, hypoxia has recently been observed near the bottom, and there is a potential risk from Thursday into the weekend. This text will change if the risk changes. --Stumpf, 10 July 2025
The Lake Erie Hypoxia Forecast is operated by the National Centers for Coastal Ocean Science.
Contact hab@noaa.gov for technical questions. Last Updated: 2025-07-10 08 PM EST
Localized hypoxic upwelling is possible this weekend along the Ohio coast. A narrow band of hypoxic waters (<2 mg L-1 dissolved oxygen) is located just offshore of the Ohio coast from Sandusky to east of Ashtabula. Southerly winds on Friday may cause this water to move onshore, causing localized hypoxic events. Southwest winds on the weekend may cause a shift in risk to Sandusky area through Monday. While the western basin does not typically have hypoxic events because winds tend to keep the shallow basin mixed, hypoxia has recently been observed near the bottom, and there is a potential risk from Thursday into the weekend. This text will change if the risk changes. --Stumpf, 10 July 2025
The Lake Erie Hypoxia Forecast is operated by the National Centers for Coastal Ocean Science.
Contact hab@noaa.gov for technical questions. Last Updated: 2025-07-10 08 PM EST