A surge of the toxic red tide organism, Karenia brevis, has gripped sections of the Florida Panhandle this week, with state officials confirming “bloom concentrations” that have already triggered reports of fish kills and breathing difficulties for beachgoers.
According to the latest data, monitors detected the organism in 31 samples along Florida’s Gulf Coast over the past seven days. The situation is most acute in Northwest Florida, where 12 separate samples registered bloom concentrations exceeding 100,000 cells per liter.
Satellite imagery captured on November 20 corroborates the water samples, revealing elevated chlorophyll levels stretching from Bay County to Franklin County. This biological activity has resulted in immediate physical impacts. The Florida Fish and Wildlife Conservation Commission (FWC) confirmed that suspected red tide-related fish kills were reported across Bay, Gulf, and Franklin counties.
READ: Florida Gov. DeSantis Pushes For State Control Of Atlantic Red Snapper, Proposing 39-Day Season
Human impacts are also surfacing. Visitors and residents at Mexico Beach in Bay County and Saint Joseph Bay Beach in Gulf County have reported respiratory irritation, a common side effect where the airborne toxins cause coughing and throat, nose, or eye irritation.
Specific concentration levels vary by county in the affected region:
- Gulf County: Background to high concentrations.
- Bay County: Background to medium concentrations.
- Franklin County: Low concentrations.
Southern Gulf and East Coast Conditions While the Panhandle grapples with the bloom, the rest of the state remains relatively quiet. Southwest Florida is currently seeing only background concentrations in Pinellas and Lee counties, as well as offshore of Hillsborough. Only one sample offshore of Collier County showed very low concentrations. The Florida East Coast remains entirely clear of K. brevis.
Forecast Short-term modeling from the USF-FWC collaboration predicts variable movement of surface waters along the coast over the next three and a half days. Subsurface currents are expected to remain minimal from Bay to Pasco counties.
Due to the upcoming holiday, the next official status report is scheduled for release on Tuesday, November 25.
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