myFWC
Home

Red Tide Current Status

Midweek Red Tide Status Update (December 13, 2017)

A bloom of the Florida red tide organism, Karenia brevis, was observed along Lee and Charlotte counties in Southwest Florida over the past week.

In Southwest Florida, K. brevis was observed at background concentrations in one sample collected from Manatee County, background to low concentrations in fourteen samples collected from Sarasota County, background to medium concentrations in five samples collected from Charlotte County, background to high concentrations in twenty-one samples collected from Lee County, and very low concentrations in one sample collected from Collier County.

Additional samples collected throughout Florida this past week did not contain K. brevis.

Small-scale fish kills were reported along Charlotte and Lee counties over the past week. Slight respiratory irritation was reported along Lee County on 12/13/17. Forecasts for Southwest Florida by the USF-FWC Collaboration for Prediction of Red TidesExternal Website predict net southern transport of surface and subsurface waters from Pinellas to Lee counties over the next three days.

Midweek Red Tide Status Map (December 13, 2017)

View Southwest Coast map Adobe PDF (PDF 208KB) (December 13, 2017)

 

Red Tide Status (December 8, 2017)

A bloom of the Florida red tide organism, Karenia brevis, was observed along Lee and Charlotte counties in Southwest Florida over the past week.

In Southwest Florida, K. brevis was observed at background to very low concentrations in three samples collected from Manatee County, very low concentrations in one sample collected from Sarasota County, background to medium concentrations in seven samples collected from Charlotte County, background to high concentrations in thirty samples collected from Lee County, and background to very low concentrations in four samples collected from Collier County.

Additional samples collected throughout Florida this past week did not contain K. brevis.

A fish kill was reported in Charlotte County on 12/06. Slight respiratory irritation has been reported in some areas of Charlotte County over the past week.  Forecasts for Southwest Florida by the USF-FWC Collaboration for Prediction of Red TidesExternal Website predict minimal net movement of surface and subsurface waters from Pinellas to Lee counties over the next three days.

Red Tide Status Map (December 8, 2017)

View statewide map Adobe PDF (PDF 359KB) (December 8, 2017)

Regional Status Reports and Maps (December 8, 2017)

Southwest coast report Adobe PDF (PDF 130KB) and map Adobe PDF (PDF 342KB)
East coast report Adobe PDF (PDF 55KB) and map Adobe PDF (PDF 247KB)
Northwest coast report Adobe PDF (PDF 44KB) and map Adobe PDF (PDF 416KB)

To see detailed information on this week's samples, view the current Statewide Google Earth map for December 8, 2017External Website. 

By using Google Earth, you can zoom in to specific locations and click on stations to see detailed information, including sample date and cell concentration. You must have Google Earth installed on your computer to view this map; the software can be downloaded from the Google Earth website.External Website

The FWRI Red Tide Status Line is now available to callers throughout the state. FWRI updates the recording each Friday by 5 p.m. Red Tide Status Line: 866-300-9399 (toll-free inside Florida only); 727-552-2448 (outside Florida).

Reports are updated on Friday afternoon except during holidays, in which case the report will be released on the closest day. Additional information, if available, is provided on Wednesday afternoon. To receive an e-mail when the current status has been updated, visit our subscription area.

FWC's Red Tide Action Report

Red tide is a naturally-occurring microscopic alga that has been documented along Florida’s Gulf Coast since the 1840’s and occurs nearly every year. Blooms, or higher-than-normal concentrations, of the Florida red tide alga, Karenia brevis, frequently occur in the Gulf of Mexico. Red tide begins in the Gulf of Mexico 10 to 40 miles offshore and can be transported inshore by winds and currents.

FWC Actions and Partnerships:

Red Tide Resources

Previous Regional Status Reports and Maps

December 1, 2017

Southwest coast report Adobe PDF (PDF 114KB) and map Adobe PDF (PDF 323KB)
East coast report Adobe PDF (PDF 43KB) and map Adobe PDF (PDF 247KB)
Northwest coast report Adobe PDF (PDF 41KB) and map Adobe PDF (PDF 418KB)
Google Earth mapExternal Website

November 22, 2017

Southwest coast report Adobe PDF (PDF 128KB) and map Adobe PDF (PDF 326KB)
East coast report Adobe PDF (PDF 49KB) and map Adobe PDF (PDF 275KB)
Northwest coast report Adobe PDF (PDF 54KB) and map Adobe PDF (PDF 376KB)
Google Earth mapExternal Website

November 17, 2017

Southwest coast report Adobe PDF (PDF 130KB) and map Adobe PDF (PDF 334KB)
East coast report Adobe PDF (PDF 43KB) and map Adobe PDF (PDF 297KB)
Northwest coast report Adobe PDF (PDF 44KB) and map Adobe PDF (PDF 316KB)
Google Earth mapExternal Website

November 9, 2017

Southwest coast report Adobe PDF (PDF 136KB) and map Adobe PDF (PDF 335KB)
East coast report Adobe PDF (PDF 53KB) and map Adobe PDF (PDF 239KB)
Northwest coast report Adobe PDF (PDF 55KB) and map Adobe PDF (PDF 414KB)
Google Earth mapExternal Website

Additional archived status maps can be found on FlickrExternal Website

Key for Results

DescriptionKarenia brevis cells/literPossible Effects (K. brevis only)
NOT PRESENT - BACKGROUND background levels of 1,000 cells or less None anticipated
VERY LOW >1,000 to 10,000 Possible respiratory irritation; shellfish harvesting closures > 5,000 cells/L
LOW >10,000 to 100,000 Respiratory irritation, possible fish kills and bloom chlorophyll probably detected by satellites at upper limits
MEDIUM >100,000 to 1,000,000 Respiratory irritation and probable fish kills
HIGH >1,000,000

As above plus discoloration


Hotlines and Information Sources

View Full Site

Outlook Email Web Access

© 1999-2017 All Right Reserved. State of Florida.