Red Tide Status Update: 10/24/25

Over the past week, red tide was observed in six samples collected along Florida’s Gulf Coast. Bloom concentrations (>100,000 cells/liter) were present in five samples from Gulf County. We continue to use satellite imagery (USF and NOAA NCCOS) to help track nearshore and offshore conditions.

Imagery from October 23 revealed elevated chlorophyll levels in Northwest Florida in Gulf County (St. Joseph Bay), despite some cloud cover (see Northwest Coast map below). 

Additional details are provided below.

• In Southwest Florida over the past week, K. brevis was observed at background concentrations in one sample collected offshore of Sarasota County.
• In Northwest Florida over the past week, K. brevis was observed at medium to high concentrations in Gulf County.
• Along the Florida East Coast over the past week, K. brevis was not observed.

Fish kills suspected to be related to red tide were reported to FWC's Fish Kill Hotline or other partners over the past week in Northwest Florida (Bay and Gulf counties).

Respiratory Irritation suspected to be related to red tide was not reported over the past week in Florida. For forecasts that use FWC and partner data, please visit the National Oceanic and Atmospheric Administration’s Gulf Coast Harmful Algal Blooms Forecast.

Short-term (3.5-day) forecasts by the USF-FWC Collaboration for Prediction of Red Tides predict southwestern surface currents in most areas between eastern Bay County and northern Monroe County. Subsurface currents are variable from Bay County to Taylor County, and predominantly eastern to southeastern from Dixie County to northern Monroe County.  

The next status report will be issued on Friday, October 31. Please check our daily sampling map, which can be accessed via the online status report on our Red Tide Current Status page. For more information on algal blooms and water quality, please visit Protecting Florida Together.

This information, including maps and reports with additional details, is also available on the FWRI Red Tide website. The website also provides links to additional information related to the topic of Florida red tide including satellite imagery, experimental red tide forecasts, shellfish harvesting areas, the FWC Fish Kill Hotline, the Florida Poison Information Center (to report human health effects related to exposure to red tide), and other wildlife related hotlines.

To learn more about various organisms that have been known to cause algal blooms in Florida waters, see the FWRI Red Tide Flickr page. Archived status maps can also be found on Flickr.       

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