Red Tide Current Status

NEW: Daily Sample Map External Website

This map contains the last eight days of sampling and is updated daily at 5 p.m.
Please be sure to click on individual dots for sampling details.

Red Tide Status Update for October 19, 2018

Current Conditions
Bloom concentrations of the red tide organism, Karenia brevis, persist on Florida’s Southwest, Northwest, and East coasts. Patchiness was observed in each region. Additional details are provided below.

In Southwest Florida, relative to last week K. brevis concentrations increased slightly in areas of Pinellas, Manatee, Sarasota, Lee and Collier counties, but “high” (>1,000,000 K. brevis cells per liter) and “medium” concentrations occurred only in or offshore of Pinellas and Sarasota counties. In Northwest Florida, “high” concentrations of K. brevis were observed in one Santa Rosa county sample and “medium” concentrations occurred in Santa Rosa and Okaloosa county samples. On the East Coast, three coastal samples from Brevard and Indian River counties contained “high” concentrations of K. brevis, and medium cell concentrations were observed at multiple sites in Brevard, Indian River, and St. Lucie counties, and one site in Broward County. Relative to last week K. brevis concentrations generally increased in Brevard and Indian River counties, and decreased in areas of Martin, Palm Beach and Miami-Dade counties.

Fish Kills
In Southwest Florida, reports of fish kills were received for Pinellas and Sarasota counties. In Northwest Florida, reports of fish kills were received for Okaloosa, Walton, and Bay counties and offshore Pasco county. Along the East Coast of Florida, reports of fish kills were received for Volusia, Brevard, Indian River, St. Lucie, Martin, and Palm Beach counties.

Respiratory Irritation
Respiratory irritation was reported over the past week in Southwest Florida (in Pinellas, Manatee, Sarasota, Lee, and Collier counties). Respiratory irritation was also reported in Northwest Florida (in Okaloosa County) and the Florida East Coast (in Brevard and Indian River counties). For additional information, view the southwest coast report Adobe PDF, the northwest coast report Adobe PDF, and the east coast report Adobe PDF.

Forecasts by the USF-FWC Collaboration for Prediction of Red TidesExternal Website for Pasco to northern Monroe counties predict net southwestern transport of surface waters and southeastern movement of subsurface waters for most areas over the next three days. Three-day forecasts for Escambia to western Gulf counties predict net southwestern transport of surface waters and northeastern movement of subsurface waters.

View the Red Tide Status Map Adobe PDF (October 19, 2018)

To see detailed information on this week's samples, view the current Statewide Google Earth map for October 19, 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 galleryExternal Website. Previous regional status reports and maps can be found on our red tide resources 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.

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: Website.


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

View Full Site

Outlook Email Web Access

© 1999-2018 All Right Reserved. State of Florida.