NOVEMBER 8, 2018

Florida: Red Tide Persists in Multiple Areas

Current Conditions
Bloom concentrations of the Florida red tide organism, Karenia brevis, persist on Florida’s Southwest, Northwest, and East coasts. Patchy bloom conditions continue to be observed in each region. Additional details are provided below.

  • Over the past week in Southwest Florida, K. brevis was observed in samples spanning Pinellas to Collier counties. Observations of >1,000,000 K. brevis cells per liter (“high” concentrations) occurred in Pinellas, Manatee, Sarasota and Charlotte counties. “Medium” K. brevis concentrations were detected in these same general areas, and in and offshore of Northern Lee County. Relative to last week, K. brevis concentrations generally decreased in Sarasota County and increased in Charlotte County.
  • In Northwest Florida over the past week, K. brevis was observed in and/or offshore of Escambia, Santa Rosa, Okaloosa and Gulf counties. “Medium” concentrations were observed in Santa Rosa County and in and offshore of Gulf County.
  • Along the Florida East Coast over the past week, K. brevis was observed from Brevard to Broward counties, excluding Indian River County. “Medium” concentrations occurred only in Brevard and Martin counties. Relative to last week, K. brevis concentrations decreased in parts of Brevard, Indian River, St. Lucie, and Martin counties.

In Southwest Florida, fish kill reports were received for multiple locations in Pinellas, Manatee, and Sarasota counties. In Northwest Florida, fish kills were reported in Escambia, Okaloosa, and Walton counties. Along the East Coast of Florida, fish kills were reported from Indian River and Martin counties, and one was also reported from Brevard County.

Respiratory irritation was reported over the past week in Southwest Florida (in Pinellas, Manatee, and Sarasota counties), Northwest Florida (in Escambia and Okaloosa counties), and on the Florida East Coast (in Brevard County).

Forecasts by the USF-FWC Collaboration for Prediction of Red Tides for Pinellas to Monroe counties predict net southern transport of surface waters, and net southeastern movement of subsurface waters in most areas over the next three days. Three-day forecasts for Escambia to western Gulf counties predict net southeastern surface transport and net northeastern subsurface movement in most areas.

The next complete red tide status report will be posted on Friday, November 9nd. Please check our daily sampling map), which can be accessed via the online status report on our Red Tide Current Status page.

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.