Red Tide Current Status

This summary report of current red tide conditions around Florida includes a map of sampling results and regional status reports.

Red Tide Status (October 31, 2014)

A bloom of the Florida red tide organism, Karenia brevis, has been detected in southwest Florida. Recent satellite images from the Optical Oceanography Laboratory at the University of South Florida show that patches extend approximately 60 miles alongshore and up to 40 miles offshore, depending on location, between southern Charlotte and northern Collier counties.

Karenia brevis concentrations range from background to medium in the offshore and alongshore areas, and from background to low in the Pine Island Sound system (Lee County). Karenia brevis was also detected in background concentrations in one sample collected inshore of Pinellas County and in five samples collected in and alongshore of Sarasota County.  In addition, one sample collected alongshore of Franklin County and one collected offshore of Wakulla County each contained background concentrations of K. brevis.

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

Forecasts by the USF-FWC Collaboration for Prediction of Red Tides (CPR), a partnership between the University of South Florida’s College of Marine Science and the Florida Fish & Wildlife Conservation Commission, project alongshore, SW movement of the bloom over the next 3 days.

Red Tide Status Map (October 31, 2014)

Bloom area with satellite image overlay October 31, 2014      
See larger map Adobe PDF

Statewide Map (October 31, 2014)

Statewide Red Tide Counts October 31, 2014
See larger map Adobe PDF

Regional Status Reports and Maps Adobe PDF (October 31, 2014)

Southwest coast report and map
East coast report and map
Northwest coast report and map

To see detailed information on this week's samples, view the current Statewide Google Earth map for October 31, 2014.

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.

Previous Regional Status Reports and Maps

October24, 2014
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google Earth map

October 17, 2014
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google Earth map

October 10, 2014
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google Earth map

October 3, 2014
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google Earth map

Key for Results

Description Karenia brevis cells/liter Possible 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



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