Severe · Special Marine WarningThis alert has expired. It is kept for reference.
Special Marine Warning issued September 5 at 7:41PM EDT until September 5
Affecting Biscayne Bay; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM
In effect until: Sep 6, 2026, 12:30 AM
Biscayne Bay; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM
Likely impact; effects through 12:30 AM.
Stay indoors, monitor local alerts, and follow instructions from local officials.
Affected areas
Miami
Read the original bulletin (official text)
SMWMFL The National Weather Service in Miami has issued a * Special Marine Warning for... Biscayne Bay... Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM... * Until 830 PM EDT. * At 741 PM EDT, a severe thunderstorm capable of producing waterspouts was located over Key Biscayne, moving south at 5 knots. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Virginia Key, Soldier Key, Key Biscayne, Biscayne Bay, Cape Florida, and Coral Gables.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™