The U.S. Government is closed. This site will not be updated; however NOAA websites and social media channels necessary to protect lives and property will be maintained. To learn more, visit www.commerce.gov. For the latest forecast and critical weather information, visit www.weather.gov. 

The U.S. government is closed. This site will not be updated; however, NOAA websites and social media channels necessary to protect lives and property will be maintained. To learn more, visit commerce.gov. 

For the latest forecasts and critical weather information, visit weather.gov.

Join the upcoming webinar on time series HABs for Lake Erie

satellite imagery of peak bloom on Lake Erie, 2002 through 2024

Since 2009, NCCOS has used satellite data to monitor the severity and impacts of annually occurring cyanobacteria Harmful Algal Blooms (cyanoHABs) in Lake Erie by leveraging satellite imagery across three different satellite missions. Following the 2024 bloom, NCCOS reprocessed the full time series with new satellite calibrations and improved algorithms. This reprocessing resulted in the most consistent and complete satellite imagery time series for Lake Erie across all three satellite missions from 2000 to present. Learn more about the methods used and updated time series results with NCCOS’ lead forecaster, Rick Stumpf in an upcoming webinar this Thursday. Register here:

https://ohioseagrant.osu.edu/news/calendar/2025/05/22/yoj75/freshwater-science