JUNE 29, 2020

Florida: Red Tide Minimal in State Waters this Week

We have received several reports of a bloom – not K. brevis – offshore of Southwest Florida over the past few weeks. This bloom is also visible in satellite chlorophyll imagery provided by USF and NOAA. Samples from offshore and coastal sites along Southwest Florida and Florida’s East Coast helped identify this as a patchy bloom of the marine cyanobacterium Trichodesmium. This alga blooms each year, has not been shown to be toxic in Florida’s waters, and often resembles sawdust but can change color as it decomposes.

  • In Southwest Florida over the past week, K. brevis was present at background concentrations in one Manatee County sample.
  • In Northwest Florida over the past week, K. brevis was not observed.
  • Along the Florida East Coast over the past week, K. brevis was not observed.

No fish kills suspected to be related to red tide were reported over the past week (please see https://myfwc.com/research/saltwater/health/fish-kills-hotline).

No reports of respiratory irritation were received over the past week.

Forecasts by the USF-FWC Collaboration for Prediction of Red Tides for Pinellas to northern Monroe counties predict variable transport of surface waters and net southeastern movement of subsurface waters in most areas over the next four days.

Due to the Holiday next Friday, the next complete status report will be issued on Thursday, July 2nd. 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.

The FWRI HAB group in conjunction with Mote Marine Laboratory now have a facebook page. Please like our page and learn interesting facts concerning red tide and other harmful algal blooms in Florida.