Red Tide Current Status

FWC reports on the current status of Karenia brevis blooms using tables, static maps, and interactive Google Earth maps. Archived status maps can be found in our Flickr gallery.

Red Tide Status (August 26, 2016)

Karenia brevis, the Florida red tide organism, was observed in background concentrations in one sample collected from Pinellas County and in two samples collected from Manatee County. Background to very low concentrations of K. brevis were observed in four samples collected from Sarasota County. Additional samples collected throughout Florida this week did not contain K. brevis.

Forecasts for Southwest Florida by the USF-FWC Collaboration for Prediction of Red Tides show net offshore movement of surface waters, and southern, inshore movement of bottom waters between southern Pinellas and Lee counties over the next 3 days.

Additional information regarding the current status of algal blooms in South Florida is being consolidated and posted on the DEP website: https://depnewsroom.wordpress.com/south-florida-algal-bloom-monitoring-and-response/

Red Tide Status Map (August 26, 2016)

Statewide red tide counts August 18 - 25, 2016

View a larger map Adobe PDF (August 26, 2016)

Regional Status Reports and Maps Adobe PDF (August 26, 2016)

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 August 26, 2016.

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

August 19, 2016
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google Earth map

August 12, 2016
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google Earth map

August 5, 2016
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google Earth map

Additional archived status maps can be found on Flickr

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



FWC Facts:
The bowfin, or mudfish, is a ‘living fossil’ and is the only freshwater fish with a gular bone, a bony plate on the exterior of the lower jaw between the two jawbones.

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