NOAA Western Lake Erie HAB Early Season Projection 01
NOAA Western Lake Erie HAB Early Season Projection 01
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Western Lake Erie Harmful Algal Bloom Early Season Projection

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


This bulletin provides a seasonal projection of the Microcystis harmful algal blooms (HABs) in western Lake Erie. The bulletin is updated and sent weekly from May - June.

To view the Bulletin, click here or on the image below. 

Following the 2024 Microcystis bloom, we reprocessed the satellite remote sensing time series used to monitor the severity and impacts of annually occurring cyanobacteria (Microcystis) HABs. The satellite reprocessing included new calibrations and improved algorithms, generating a more consistent data set for HAB monitoring in Lake Erie. You can find more information about the updated time series here. In addition, Ohio Sea Grant is hosting a webinar on the time series update on Thursday May 22, 2025 at 12 pm ET. Please find registration information here.


2025 Projection 01

Click here to view more information and links about NOAA's Lake Erie and HAB Forecasting

Health Information:

Additional HAB monitoring and forecasts:


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