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.

HARMFUL ALGAL BLOOM FORECASTS

Southwest Florida Satellite Imagery

Composite 8-days of satellite imagery up to 03-05-2026 showing location of algae bloom which may include algae besides K. brevis. Overlaid cell count data provided by several contributors. The past few days of imagery can be seen at the HAB monitoring site.

Water samples from 02-26-2026 to 03-05-2026 found Karenia brevis was either not present or at background levels so there is no risk of respiratory irritation and blooms in imagery are unlikely to be a red tide (caused by Karenia brevis).
The images were derived from Copernicus Sentinel-3 satellite data from the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) and were processed by NOAA, National Centers for Coastal Ocean Science. Cell count data were provided by several contributors.

See more information about our bloom monitoring imagery.