Red Tide Status (April 21, 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 one sample collected from Pinellas County; background to very low concentrations in six samples collected from Sarasota County; and background to very low concentrations in six samples collected from Lee County.
One sample collected from the East Coast (Brevard County) contained background concentrations of K. brevis. Additional samples collected throughout Florida over the past week did not contain K. brevis.
Forecasts for Southwest Florida by the USF-FWC Collaboration for Prediction of Red Tides predict net offshore movement of surface waters, and southern, onshore movement of subsurface waters from Pinellas to northern Monroe counties over the next three days.
View a statewide map (PDF 220 KB) (April 21, 2017)
Regional Status Reports and Maps (April 21, 2017)
Southwest coast report (PDF 100KB) and map (PDF 216KB) East coast report (PDF 40KB) and map (PDF 228KB) Northwest coast report (PDF 56KB) and map (PDF 248KB)
To see detailed information on this week's samples, view the current Statewide Google Earth map for April 21, 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.
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
April 13, 2017Southwest coast report (PDF 168KB) and map (PDF 220KB) East coast report (PDF 48KB) and map (PDF 232KB) Northwest coast report (PDF 48KB) and map (PDF 244KB)Google Earth map
April 7, 2017Southwest coast report (PDF 120KB) and map (PDF 220KB) East coast report (PDF 52KB) and map (PDF 228KB) Northwest coast report (PDF 40KB) and map (PDF 244KB)Google Earth map
March 31, 2017Southwest coast report (PDF 136KB) and map (PDF 224KB) East coast report (PDF 44KB) and map (PDF 228KB) Northwest coast report (PDF 40KB) and map (PDF 244KB)Google Earth map
Status maps can be found on Flickr
Key for Results
As above plus discoloration
Hotlines and Information Sources
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