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 (July 22, 2016)

Karenia brevis, the Florida red tide organism, was observed in background concentrations in two samples collected from Manatee County (Southwest Florida).  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 southern movement of surface waters and southern inshore movement of bottom waters between Pinellas and Lee counties over the next 3 days.

All information regarding the algal blooms currently affecting 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 (July 22, 2016)

Statewide red tide counts July 7 - 14, 2016

View a larger map Adobe PDF (July 22, 2016)

Regional Status Reports and Maps Adobe PDF (July 22, 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 July 22, 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

July 15, 2016
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google earth map

July 8, 2016
Southwest coast report and map
East coast report and map
Northwest coast report and map
Google Earth map

July 1, 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:
Bass have been known to eat snook, and snook occasionally eat bass.

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