Event Brief
Red Tide Detected on Florida’s Atlantic Coast
By The BriefBrief · Sources (1)
Filed: Aug 21, 2026 at 6:00 PM ET
Summary: Florida wildlife officials detected the red tide organism Karenia brevis in 25 water samples along the state’s East Coast over the past week. One Nassau County sample reached bloom concentrations, defined as more than 100,000 cells per liter.
WHO: Florida wildlife officials
WHAT: Detected Karenia brevis (red tide) in 25 East Coast water samples; one Nassau County sample reached bloom concentrations.
WHEN: Aug 21, 2026 at 5:01 PM ET
WHERE: Nassau County, Florida
WHY: State monitoring reports identified bloom concentrations in water samples collected over the past week.
ℹ️ This event is analyzed using pattern arcs, velocity indicators, and source analysis in our MI Console.
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