Overview
A moderate harmful algal bloom (HAB) is predicted for western Lake Erie during the summer of 2026. This forecast, developed by NOAA in collaboration with its research partners, projects the bloom to reach 3.5 on the HAB severity index. A potential range for this bloom has been identified as 3 to 4.5. The projected timeline suggests that the bloom could begin to impact coastal recreation by mid-July.
Research Context
The 2026 Seasonal Forecast of Harmful Algal Blooms for Lake Erie was the subject of a public webinar held on June 25. This event was hosted by Ohio Sea Grant and Stone Laboratory. Experts from NOAA, alongside governmental and academic collaborators, participated in discussions regarding the annual forecast.
The forecast specifically addresses the western portion of Lake Erie. The methodology involves utilizing a HAB severity index as a metric for bloom intensity.
Findings
- The 2026 forecast indicates a moderate harmful algal bloom in western Lake Erie.
- The bloom is predicted to measure 3.5 on the HAB severity index.
- The potential range for the 2026 bloom severity is estimated to be between 3 and 4.5.
- Coastal recreation in affected areas could experience impacts from the bloom by mid-July.
Why This Matters
The prediction of a moderate harmful algal bloom in western Lake Erie carries implications for coastal recreation. The mid-July timeframe for potential impacts suggests recreational activities in the region may be affected during a peak summer period.