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 Mid-Week Update for September 19, 2018 

Current Conditions
A bloom of the Florida red tide organism, Karenia brevis, persists in Southwest Florida and extends along ~135 miles of coastline, from northern Pinellas to northern Collier counties, and extends offshore (10 miles or more). A patchy bloom of K. brevis, first reported last week, continues in Northwest Florida. Additional details are provided below.

In Southwest Florida, K. brevis concentrations generally decreased in central Manatee and southern Sarasota counties, and increased in Pinellas and northern Collier counties over the past week. Observations of >1,000,000 K. brevis cells per liter (“high” concentrations) occurred in Southwest Florida over the past week, in Pinellas, Manatee, Sarasota, Charlotte, and Lee counties and >25 miles offshore of Lee County. In Northwest Florida, K. brevis was observed in or offshore of Santa Rosa, Gulf, Bay, and Pasco counties, with up to “medium” concentrations observed in Bay County only.

In Southwest Florida, reports of fish kills were received for multiple locations in and/or offshore of Pinellas, Manatee, Sarasota, Charlotte, and Lee counties. In Northwest Florida, reports of fish kills were received in and/or offshore of Walton, Bay and Gulf counties. Respiratory irritation was reported in Southwest Florida (in Pinellas, Manatee, Sarasota, and Lee counties) and in Northwest Florida (in Gulf County).

Forecasts by the USF-FWC Collaboration for Prediction of Red TidesExternal Website for Pinellas to northern Monroe counties in Southwest Florida predict net southwestern movement of surface waters and southeastern transport of subsurface waters in most areas over the next three days. Forecasts for Northwest Florida predict net southeastern transport of surface waters and northeastern movement of subsurface waters.

The next complete red tide status report will be posted on Friday, September 21st.

Southwest Coast Red Tide Status Map (September 19, 2018)
Southwest Coast Red Tide Counts September 11 through 18, 2018
View a larger map Adobe PDF (September 19, 2018)

 

Northwest Coast Red Tide Status Map (September 19, 2018)
Northwest Coast Red Tide Counts September 11 through 18, 2018
View a larger map Adobe PDF (September 19, 2018)

 

Red Tide Status Update for September 14, 2018

Weekly Change September 8 to 14
 

Current Conditions
A bloom of the Florida red tide organism, Karenia brevis, persists in Southwest Florida and extends along ~130 miles of coastline, from northern Pinellas to Lee counties, and extends offshore (10 miles or more). A patchy bloom of K. brevis was also observed in Northwest Florida for the first time this past week.

Relative to last week, increased K. brevis concentrations were observed at multiple locations in Southwest Florida (in Pinellas, Manatee, Sarasota, Charlotte counties). Decreased concentrations were observed in southern Lee and Collier counties. In Northwest Florida, K. brevis was observed in seven counties this week, compared to only one county last week (Bay County). Observations of >1,000,000 K. brevis cells per liter (“high” concentrations) occurred only in Southwest Florida (in or offshore of Pinellas, Manatee, Sarasota, Charlotte, and Lee counties). More specific details are provided below.

  • In Southwest Florida over the past week, K. brevis was observed at background to high concentrations in or offshore of Pinellas County, background to high concentrations in Manatee County, background to high concentrations in Sarasota County, medium to high concentrations in or offshore of Charlotte County, background to high concentrations in or offshore of Lee County, and background concentrations in or offshore of Collier County. For additional information, view the southwest coast report Adobe PDF and map Adobe PDF

  • In Northwest Florida over the past week, K. brevis was observed at very low concentrations in Santa Rosa County, very low concentrations in Okaloosa County, very low concentrations in Walton County, background to medium concentrations in or offshore of Bay County, background concentrations in Gulf County, background concentrations in Franklin County, and very low concentrations in Pasco County. For additional information, view the northwest coast report Adobe PDF and map Adobe PDF.

  • Samples collected along the east coast of Florida over the past week did not contain K. brevis. For additional information, view the East Coast report Adobe PDF and map Adobe PDF.

Fish Kills
In Southwest Florida, reports of fish kills were received for multiple locations in and/or offshore of Pinellas, Manatee, Sarasota, Charlotte and Lee counties. In Northwest Florida, reports of fish kills were received in and/or offshore of Walton and Bay counties. More detailed information is available at /fishkill.

Respiratory Irritation
Respiratory irritation was reported over the past week in Pinellas, Manatee, Sarasota, and Lee counties. For additional information, view the Southwest Coast report Adobe PDF. 

Forecast
Forecasts by the USF-FWC Collaboration for Prediction of Red TidesExternal Website for Pinellas to northern Monroe counties predict net southern movement of surface waters and net southeastern transport of subsurface waters over the next three days for most areas. Forecasts for Northwest Florida predict net eastern transport of surface and subsurface waters for most areas.

Red Tide Status Map (September 14, 2018)
Statewide Red Tide Counts September 6 through 13, 2018
View a larger map Adobe PDF
 (September 14, 2018)

To see detailed information on this week's samples, view the current Statewide Google Earth map for September 14, 2018External Website

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 websiteExternal Website

Archived status maps can be found in our Flickr gallery.

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.

Additional Information
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.


 

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



FWC Facts:
Hard corals are corals with 6 tentacles or multiples of 6 (e.g., 6, 12, 18, 24). Octocorals have 8 tentacles.

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