Coastal Flood Warning for Jacksonville: Water Peaks Sunday and Monday Mornings in 5 Flood-Prone Areas

Jacksonville, Fla. — A coastal flood warning is in effect for Jacksonville and the Northeast Florida coast from 5 a.m. Saturday, Oct. 24, through 8 p.m. Monday, Oct. 26, with the highest water expected near the Sunday and Monday morning high tides. The city says water could reach 2.5 to 3.5 feet above normal ground along the coast and the Intracoastal Waterway.

The National Weather Service issued the warning at 7:33 p.m. Friday. It expects significant coastal flooding, warning that "numerous roads may be closed" and that "low lying property including homes, businesses, and some critical infrastructure will be inundated."

When will flooding be worst?

Flooding will come and go with the tides, and it gets worse with each cycle.

"Flooding will be the worst around high tide, beginning Saturday evening, with the highest water levels expected near the Sunday and Monday morning high tides," the city said.

How high could the water get?

Those are area-wide projections, not depths for any one street or home.

The 5 areas the city named

The city listed these flood-prone areas:

• San Marco
• Riverside
• Northbank
• Hogans Creek
• Ken Knight Drive

They aren't the only places that can flood. Anyone in a low-lying spot near the ocean, the Intracoastal or the river should keep an eye on the water, especially Sunday and Monday mornings.

Who's covered

The warning covers coastal Duval, coastal Nassau, northeast and southeast coastal St. Johns and coastal Flagler counties, plus coastal Glynn and Camden counties in Georgia.

In St. Johns County, officials expect moderate to locally major tidal flooding and wind gusts of 35 to 45 mph, peaking Sunday into Monday.

Wind, waves and rain

• Wind: Coastal gusts up to 45 mph from Saturday afternoon through Sunday, according to the city. The weather service has a wind advisory for Jacksonville from noon Saturday to 1 a.m. Sunday.
• Waves: Large breaking waves of 7 to 11 feet at the beaches, with a high surf advisory and high rip current risk through Monday.
• Offshore: A gale watch Saturday through Monday, with seas of 10 to 16 feet.

Sunshine Monday doesn't mean the water is gone. The flood warning runs until 8 p.m. that night.

What the city is doing

• The Emergency Operations Center moves to partial activation Saturday evening.
• Jacksonville Fire-Rescue is positioning swiftwater rescue and emergency road access teams.
• The Jacksonville Sheriff's Office is deploying additional officers and resources.

What you should do now

• Never drive through floodwater. Turn around and find another route.
• Avoid flood-prone areas around high tide, especially Sunday and Monday mornings.
• Secure loose items like patio furniture and trash cans before the wind picks up Saturday.
• Report downed power lines or hazardous trees to 904-630-CITY (2489).
• Sign up for alerts at JaxReady.com/ALERTJAX.
• Check for updates at JaxReady.com and weather.gov/jax. Conditions can change.

How we did this

This story is based on National Weather Service Jacksonville alerts and forecasts issued Oct. 23, 2026, and the City of Jacksonville Emergency Preparedness Division's Oct. 23 news release, plus St. Johns County's Oct. 23 release. Exact tide times and street-level water depths were not provided by those sources.