myFWC
Home

Red Tide Current Status

Red Tide Status (May 19, 2017)

The Florida red tide organism, Karenia brevis, persists at background to very low concentrations in Southwest Florida.

Over the past week, Karenia brevis was observed at background concentrations in three samples collected from Manatee County; background concentrations in one sample collected from Sarasota County; and very low concentrations in one sample collected from Charlotte County.

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

Slight respiratory irritation was reported at Manatee Beach (Manatee County) on 5/18. Forecasts for Southwest Florida by the USF-FWC Collaboration for Prediction of Red TidesExternal Website predict northern movement of surface waters and minimal net transport of subsurface waters from Pinellas to Lee counties over the next three days.

View statewide map Adobe PDF (PDF 220 KB) (May 19, 2017)

Regional Status Reports and Maps (May 19, 2017)

Southwest coast report Adobe PDF(PDF 124KB) and map Adobe PDF(PDF 220KB)
East coast report Adobe PDF (PDF 48KB) and map Adobe PDF (PDF 264KB)
Northwest coast report Adobe PDF(PDF 52KB) and map Adobe PDF (PDF 244KB)

To see detailed information on this week's samples, view the current Statewide Google Earth map for May 19, 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

May 12, 2017
Southwest coast report Adobe PDF(PDF 116KB) and map Adobe PDF(PDF 220KB)
East coast report Adobe PDF (PDF 52KB) and map Adobe PDF (PDF 228KB)
Northwest coast report Adobe PDF(PDF 40KB) and map Adobe PDF (PDF 240KB)
Google Earth map

May 5, 2017
Southwest coast report Adobe PDF(PDF 112KB) and map Adobe PDF(PDF 216KB)
East coast report Adobe PDF (PDF 36KB) and map Adobe PDF (PDF 192KB)
Northwest coast report Adobe PDF(PDF 48KB) and map Adobe PDF (PDF 248KB)
Google Earth map

April 28, 2017
Southwest coast report Adobe PDF(PDF 140KB) and map Adobe PDF(PDF 216KB)
East coast report Adobe PDF (PDF 60KB) and map Adobe PDF (PDF 228KB)
Northwest coast report Adobe PDF(PDF 48KB) and map Adobe PDF (PDF 248KB)
Google Earth map

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.