FWC RED TIDE REPORT NOVEMBER 20, 2024
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Current Conditions
Over the past week, the red tide organism Karenia brevis was detected in 125 samples collected from Northwest and Southwest Florida. Bloom concentrations (>100,000 cells/liter) were observed in 24 samples: one offshore of Pasco County, four offshore of Pinellas County, one from Hillsborough County, five from and offshore of Manatee County, 10 from Sarasota County, two from and offshore of Charlotte County, and one from Lee County. Light microscopy and/or automated shipboard analysis of samples collected between 11/9 to 11/16 confirmed the presence of K. brevis from and/or offshore of Pasco to Monroe counties. Chlorophyll satellite imagery (USF, NOAA) continues to be dynamic, with imagery from 11/19 showing patches of elevated chlorophyll along and/or offshore of Pinellas, Charlotte, and Lee counties.
Additional details are provided below.
In Southwest Florida over the past week, K. brevis was observed at background to medium concentrations in and offshore of Pinellas County, low to medium concentrations in and offshore of Hillsborough County, background to medium concentrations in and offshore of Manatee, Sarasota, Charlotte, and Lee counties, and background to very low concentrations offshore of Collier County.
In Northwest Florida over the past week, K. brevis was observed at medium concentrations in one sample collected offshore of Pasco County.
Along the Florida East Coast over the past week, K. brevis was not observed.