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A bloom of the Florida red tide organism,
Karenia brevis, persists in Southwest Florida and extends along ~135 miles of coastline, from northern Pinellas to northern Collier counties, and extends offshore (10 miles or more). A patchy bloom of
K. brevis continues in Northwest Florida. Additional details are provided below.
In Southwest Florida,
K. brevis concentrations generally increased in Sarasota and Lee counties over the past week. Observations of >1,000,000
K. brevis cells per liter (“high” concentrations) occurred in Southwest Florida over the past week, in and/or offshore of Pinellas, Manatee, Sarasota, Charlotte, and Lee counties and >20 miles offshore of Collier County. In Northwest Florida,
K. brevis concentrations generally decreased in Bay and Pasco counties and increased in Gulf County; “medium” concentrations were observed from eastern Bay through Gulf counties.
In Southwest Florida, reports of fish kills were received for multiple locations in and/or offshore of Pinellas, Manatee, Sarasota, Charlotte, Lee and Collier counties. In Northwest Florida, reports of fish kills were received for Walton, Bay and Gulf counties. Respiratory irritation was reported in Southwest Florida (in Pinellas, Manatee, Sarasota, Lee and Collier counties) and in Northwest Florida (in Gulf County).
Three-day forecasts by
USF-FWC Collaboration for Prediction of Red Tides for Pinellas County predict variable currents with net southern movement of surface waters and southeastern transport of subsurface waters. Forecasts for Manatee to northern Monroe counties predict net southwestern movement of surface waters and southeastern transport of subsurface waters over the next three days. Forecasts for Northwest Florida predict net eastern transport of surface waters and northeastern movement of subsurface waters from Escambia to Gulf counties.
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.