The Red Tide Report

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    Current Conditions
    Bloom concentrations of the red tide organism, Karenia brevis, persist in some areas of Southwest Florida. Additional details are provided below.

    In Southwest Florida over the past week, K. brevis was observed at background concentrations in Manatee County, medium concentrations in Charlotte County, background to medium concentrations in Lee County, and very low to medium concentrations in Collier County. Bloom concentrations (>100,000 K. brevis cells per liter) were observed in six samples from estuarine or coastal sites in Charlotte, Lee, and Collier counties. High concentrations (>1 million K. brevis cells per liter) were not observed over the past week.
    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.
    In Southwest Florida over the past week, fish kill reports were received for Charlotte, Lee, and Collier counties (please see

    Respiratory irritation was reported over the past week in Southwest Florida in Sarasota, Lee, and Collier counties.

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

    The next status report will be issued on Friday, December 6th. 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.

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