NCCOS Lake Erie Cyanobacteria HAB Update
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Lake Erie Harmful Algal Bloom Bulletin

Provided by NOAA's National Centers for Coastal Ocean Science (NCCOS)


Please find up-to-date analysis, satellite imagery, and forecasts at the Lake Erie Harmful Algal Bloom Forecast.


As of September 18, the cyanobacteria bloom is present from Stony Point, MI to Magee Marsh Wildlife Area, OH. The bloom extends into the western basin to West Sister Island Wildlife Refuge, OH. Clouds have obscured the bloom, and may continue to do so until Thursday. Strong winds over the next few days will reduce risk of scum formation. The highest cyanobacteria concentrations are in Maumee Bay and off the MI coast as far north as Monroe.

This bulletin provides a summary and forecast of the Microcystis harmful algal blooms (HABs) in western Lake Erie. Updates will be e-mailed to subscribers with important information regarding bloom status and significant features. For a detailed explanation of the products on the forecast website, view the Lake Erie HAB Forecast Guide.

Click here to subscribe to the HAB forecasts and seasonal projections for Lake Erie

Please email questions and comments to hab@noaa.gov.

- NCCOS HAB Forecasting Team


Interpreting the Forecast System:

  • Forecast System Guide: For a detailed explanation of the Lake Erie Forecast System, view the Lake Erie HAB Forecast Guide
  • FAQ's: For Frequently Asked Questions about cyanobacteria and the forecasts NOAA issues, view the FAQs Page

Health Information:

  • For HAB safety information, please visit Ohio EPA
  • For current HAB conditions at Lake Erie Beaches, please visit Ohio DOH BeachGuard

Additional HAB monitoring and forecasts:


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