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FWC Red Tide Status Update for December 21, 2018
The red tide organism, Karenia brevis, persists in Southwest Florida, although conditions continue to improve in most areas. K. brevis was also observed at background levels in one East Coast sample and one Northwest Florida sample this past week. Additional details are provided below.
- In Southwest Florida over the past week, K. brevis was observed at very low to high concentrations in Manatee County, background to very low concentrations in Sarasota County, very low concentrations in Charlotte County, background to very low concentrations in and offshore of Lee County, background concentrations in and offshore of Collier County, and very low concentrations offshore of Monroe County. For additional information, view the southwest coast report and map.
- In Northwest Florida over the past week, K. brevis was observed at background concentrations in one sample collected from Bay County. For additional information, view the northwest coast report and map.
- Along Florida’s East Coast over the past week, K. brevis was observed at background concentrations in one sample collected from Brevard County. For additional information, view the east coast report and map.
Fish kills were not reported over the past week (please see https://public.myfwc.com/fwri/FishKillReport/searchresults.aspx).
Respiratory irritation was reported over the past week in Southwest Florida (in Manatee, Sarasota, Lee, and Collier counties). Additional details are provided in the Southwest Coast report.
Forecasts by the USF-FWC Collaboration for Prediction of Red Tides for Pinellas to northern Monroe counties predict variable transport of surface and subsurface waters over the next four days, with net southeastern movement at the surface, and net southern movement at depth.
Statewide Red Tide Status Map (December 21, 2018)
View a larger map (December 21, 2018)
To see detailed information on this week’s samples, view the Statewide Google Earth Interactive Map for December 21, 2018.
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.
Due to the holiday next week, the next available report will be the full report on Friday, December 28th. Please check our daily sampling map which can be accessed from the top of this page.
Latest Red Tide Status Report Available by Phone
Call 866-300-9399 at any time from anywhere in Florida to hear a recording about red tide conditions throughout the state. Callers outside of Florida can dial 727-552-2448. Standard calling charges apply.
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.
For additional information about red tide and the current red tide bloom, including information on how to report a fish kill or other wildlife effects, consult health authorities about human exposure, or locate other resources, visit our Red Tide-Related Hotlines and Information Sources article.
Blue-Green Algae Bloom Information
Additional information regarding the current status of algal blooms in South Florida is being consolidated and posted on the Florida Department of Environmental Protection’s website: https://floridadep.gov/dear/algal-bloom.
Key for Results
|Description||K. brevis abundance||Possible effects (K. brevis only)|
|NOT PRESENT- BACKGROUND||background levels of 1,000 cells or less||no effects anticipated|
|VERY LOW||> 1,000 – 10,000 cells/L||possible respiratory irritation; shellfish harvesting closures when cell abundance equals or exceeds 5,000 cells/L|
|LOW||> 10,000 – 100,000 cells/L||respiratory irritation; shellfish harvesting closures; possible fish kills; probable detection of chlorophyll by satellites at upper range of cell abundance|
|MEDIUM||> 100,000 – 1,000,000 cells/L||respiratory irritation; shellfish harvesting closures; probable fish kills; detection of surface chlorophyll by satellites|
|HIGH||> 1,000,000 cells/L||as above, plus water discoloration|