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Red Tide is on Siesta Key, says the FWC Red Tide Mid-Week Report

Red Tide is on Siesta Key and in "Medium Concentrations" says the FWC in the Red Tide Mid-Week Report. In fact Several Sarasota County Beaches also have Red Tide in Low Concentrations

During the Mid-Week Coastal Report from Florida Fish and Wildlife Commission (4/15/21). One area of medium levels of “red tide” (Kerenia Brevis) concentrations are showing up on North Siesta Key.

In fact several Sarasota County beaches are also reporting “low levels of “Red tide”…

There are also “high levels” being reported in Charlotte Harbor.

The full report comes out on Friday afternoon from the FWC.

Here is the detailed map of the latest water samples, showing where Red Tide is present...

This is a map showing current status, you can zoom in....

Here is the Full FWC Report released yesterday (4/14/21)

Current Conditions

The red tide organism, Karenia brevis, persists in Southwest Florida. Over the past week, K. brevis was detected in 54 samples. Bloom concentrations (>100,000 cells/liter) were observed in one sample each from Sarasota, Charlotte, and Collier counties. K. brevis was also observed at background concentrations in one sample from Northwest Florida. Additional details are provided below.

  • In Southwest Florida over the past week, K. brevis was observed at background to medium concentrations in and offshore of Sarasota County (in 31 samples), very low to high concentrations in Charlotte County (in 4 samples), background to very low concentrations in and offshore of Lee County (in 12 samples) and background to medium concentrations in Collier County (in 6 samples). Samples from or offshore of Pinellas, Hillsborough, and Manatee counties did not contain red tide.
  • In Northwest Florida over the past week, K. brevis was observed at background concentrations in Franklin County (in 1 sample).
  • Along the Florida East Coast over the past week, K. brevis was not observed.

In Southwest Florida over the past week, a fish kill suspected to be related to red tide was reported in Sarasota County. For more details, please visit:

Respiratory irritation was reported over the past week in Southwest Florida in Sarasota County. For current information, please visit:

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

FWC-FWRI is working closely with the Florida Department of Environmental Protection (FDEP) and other partners on the Piney Point discharge response. Status updates are posted on the Protecting Florida Together website:

The next complete status report will be issued on Friday, April 16th. 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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