Bloom severity index for 2002–2022, and the forecast for 2023. The bloom severity index is based on the amount of biomass over the peak 30-days. NOAA and its research partners ...

Emma Pate, Environmental Coordinator for the Norton Sound Health Corporation (center), provides information and answers questions about harmful algae at a 2022 HAB event at the Native Village of Savoonga ...

Images captured by the Imaging FlowCytobot (IFCB) aboard the Norseman II off northwestern Alaska on August 21, 2022. Most of the images are of cells of Alexandrium catenella, a HAB ...

Caption: Blooms with a severity index above 5 generally pose greater risk to drinking water and recreation in Lake Erie, but the impact of a bloom also depends on its ...

Tribal members collecting phytoplankton. Credit: NOAA. NCCOS scientists hosted a phytoplankton and toxin monitoring workshop for Tribal environmental specialists from the First Nations Health Authority, part of the WATCH Community ...

Bloom severity index (SI) for 2002-2022. The SI is based on the amount of biomass over the peak 30-days. The 2022 bloom had a severity of 6.8. October marked the ...

Seed-like cysts of the harmful alga Alexandrium catenella. Credit: Tyler Harman, Mark Vandersea, NOAA NCCOS. Scientists from NCCOS and Woods Hole Oceanographic Institution embarked on a seven-day sediment sampling mission ...

NOAA has awarded $967,505 of an anticipated four-year, $4.2 million project to support research on multi-stressor impacts on marine ecosystems under climate change. The newly funded project, led by Oregon ...

NOAA’s National Centers for Coastal Ocean Science provided a harmful algal bloom (HAB) Event Response award of $4,520 to Scripps Institution of Oceanography, Southern California Coastal Ocean Observing System (SCCOOS), ...

Western Lake Erie True Color Image of a harmful algal bloom derived from Ocean and Land Color Instrument (OLCI) sensor on Copernicus Sentinel-b obtained from EUMETSAT. NOAA’s National Centers for ...