South Florida king tides keep Coastal Flood Warning and Advisories into Wednesday

King-tide saltwater flooding remains the main coastal hazard across South Florida into early Wednesday. National Weather Service Key West’s Coastal Hazard Message at 4:05 PM EDT Tuesday, September 29, 2026, continues a Coastal Flood Warning for the Upper Florida Keys — particularly the sounds and Bay side of Key Largo — until 7:00 AM EDT Wednesday for major saltwater flooding. Officials warn that numerous roads may close, low-lying homes, businesses, and some critical infrastructure can be inundated, and little relief is expected even outside the hours around high tide. A Coastal Flood Advisory remains in effect for the Middle and Lower Keys through the same time for saltwater flooding of low-elevation streets and lots, overflowing storm drains, and overtopped seawalls and docks.

Along the mainland Atlantic coast, NWS Miami’s 11:41 AM EDT Tuesday Coastal Hazard Message extends a Coastal Flood Advisory for coastal Palm Beach, Broward, and Miami-Dade counties until 8:00 AM EDT Wednesday for moderate coastal flooding of lots, parks, and roads, with only isolated road closures expected. A Coastal Flood Statement then covers those same coastal counties Wednesday morning through Wednesday afternoon, and a separate Coastal Flood Statement remains in effect through Wednesday afternoon for mainland Monroe and far south Miami-Dade for isolated minor coastal flooding. Over the weekend and into Monday, high water submerged sections of the Hollywood Beach Broadwalk, flooded nearby businesses, and forced Fort Lauderdale police to close about two miles of State Road A1A, according to Florida Public Radio Emergency Network and other local reports. City of Miami Beach and NWS messaging have flagged the current king-tide window through about September 30, with additional elevated-tide periods later in October and November.

On the Atlantic tropics, the National Hurricane Center’s Post-Tropical Cyclone Fay Advisory Number 39 at 5:00 PM AST Tuesday states that Fay is no longer a tropical cyclone and that this is the final public advisory. At 2100 UTC the center was near 23.7°N, 48.2°W — about 1,590 miles (2,560 km) west-southwest of the Azores — with maximum sustained winds near 30 mph, a west-southwest motion near 12 mph, and an estimated minimum central pressure of 1011 mb. There are no coastal watches or warnings and no land hazards; Fay is forecast to dissipate in a day or so. NHC continues advisories on Tropical Storm Hanna well out in the central Atlantic, far from Florida and the U.S. mainland. Neither system is a Florida land threat based on these products.

Saltwater flooding can leave corrosive standing water in homes, crawl spaces, and businesses even after tides fall. If water has entered a Lakeland or Polk County property, Florida Restoration Specialists can help with water damage restoration and water extraction — call (863) 588-6617.

Sources: NWS Key West Coastal Hazard Message (4:05 PM EDT Tue), NWS Miami Coastal Hazard Message (11:41 AM EDT Tue), NWS Key West, NWS Miami, NHC Post-Tropical Cyclone Fay Advisory 39, NHC home, FPREN king tides report (Sept. 29), USA TODAY Network South Florida king tides (Sept. 29).