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Red Tide Current Status

Red Tide Status (August 11, 2017)

The Florida red tide organism, Karenia brevis, was present in Southwest and Northwest Florida.

Over the past week, Karenia brevis was observed at background to very low concentrations in four samples collected from Pinellas County and background concentrations in one sample collected from Franklin County.

Additional samples collected statewide did not contain K. brevis.

Forecasts for Southwest Florida by the USF-FWC Collaboration for Prediction of Red TidesExternal Website predict net southern onshore movement of surface and subsurface waters from Pinellas to Lee counties over the next three days.

Red Tide Status Map (August 11, 2017)
View statewide map Adobe PDF (PDF 187KB) (August 11, 2017)

Regional Status Reports and Maps (August 11, 2017)
Southwest coast report Adobe PDF (PDF 107KB) and map Adobe PDF (PDF 183KB)
East coast report Adobe PDF (PDF 57KB) and map Adobe PDF (PDF 196B)
Northwest coast report Adobe PDF (PDF 63KB) and map Adobe PDF (PDF 214KB)

To see detailed information on this week's samples, view the current Statewide Google Earth map for August 11, 2017. 

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

August 4, 2017
Southwest coast report Adobe PDF (PDF 109KB) and map Adobe PDF (PDF 179KB)
East coast report Adobe PDF (PDF 40KB) and map Adobe PDF (PDF 110KB)
Northwest coast report Adobe PDF (PDF 54KB) and map Adobe PDF (PDF 197KB)
Google Earth map

July 28, 2017
Southwest coast report Adobe PDF (PDF 114KB) and map Adobe PDF (PDF 220KB)
East coast report Adobe PDF (PDF 58KB) and map Adobe PDF (PDF 227KB)
Northwest coast report Adobe PDF (PDF 61KB) and map Adobe PDF (PDF 197KB)
Google Earth map

July 21, 2017
Southwest coast report Adobe PDF (PDF 88KB) and map Adobe PDF (PDF 220KB)
East coast report Adobe PDF (PDF 44KB) and map Adobe PDF (PDF 232KB)
Northwest coast report Adobe PDF (PDF 50KB) and map Adobe PDF (PDF 240KB)
Google Earth map

July 14, 2017
Southwest coast report Adobe PDF(PDF 132KB) and map Adobe PDF(PDF 216KB)
East coast report Adobe PDF (PDF 50KB) and map Adobe PDF (PDF 227KB)
Northwest coast report Adobe PDF(PDF 61KB) and map Adobe PDF (PDF 242KB)
Google Earth map

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


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