# Coastal Flood Warning Issued for Duval County, Florida

> The National Weather Service Jacksonville, FL, has issued a Coastal Flood Warning for Coastal Duval County, effective Saturday morning through Monday evening, anticipating significant coastal flooding and dangerous rip currents.

By PrimaryBrief newsroom · Published 2026-10-23T23:11:29.113253Z
Canonical: https://primarybrief.com/article/coastal-flood-warning-issued-for-duval-county-florida-32b98023

Coastal Duval County, Florida, is under a Coastal Flood Warning issued by the National Weather Service (NWS) Jacksonville, FL [1]. The warning, which forecasts significant coastal flooding, takes effect at 5 AM EDT on Saturday, October 24, and remains in place until 8 PM EDT on Monday, October 26, 2026 [1]. A High Rip Current Risk is also in effect through Monday evening [1].

The NWS issued the warning at 7:09 PM EDT on October 23, 2026 [1]. Earlier, a Coastal Flood Advisory was in effect until 5 AM EDT Saturday, predicting minor coastal flooding [1]. A Coastal Flood Watch also remains in effect through Monday for northeast Florida and southeast Georgia [2]. The City of Jacksonville's Emergency Preparedness Division is monitoring the weather system and is in regular contact with the National Weather Service regarding potential local impacts [5].

Forecasters expect numerous roads to close, and low-lying properties, including homes, businesses, and some critical infrastructure, may be inundated [1]. Some shoreline erosion is also anticipated [1]. Dangerous rip currents can sweep even strong swimmers away from shore into deeper water [1].

This flooding is attributed to a strengthening area of low pressure near the Bahamas, high pressure to the north, persistent onshore winds, and higher astronomical tides [2][4][6]. A full moon on Monday contributes to these higher tides [2][4][6]. Water levels could reach approximately 1.5 to 2.5 feet above normal, potentially leading to moderate to locally major tidal flooding [2]. Tides are projected to average 2.0 to 3.5 feet above normal [2]. Water levels could peak 2 to 3.5 feet above normally dry ground around high tide from Saturday evening through early Monday [6].

Wind gusts could reach 35 to 45 mph Sunday into Monday, particularly along the immediate coastline [3][4]. These strong northeasterly winds will push water toward Florida's coastline and into waterways [2][4]. Other hazards include major beach erosion near high tides this weekend and next week [2]. St. Johns County officials advise residents to secure loose outdoor items, such as holiday decorations and patio furniture. They also stressed that drivers should never attempt to cross flooded roads [3]. Rainfall is in the forecast, but the main concern is the combination of winds, tides, and surf [2]. The Coastal Flood Watch may be extended into Tuesday or Wednesday if conditions warrant [2].

## Evidence cited
1. NWS Coastal Flood Warning: Coastal Duval (nws_alerts) — https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.94f43ded635635941e1de8ea2d2e5ff9cb081678.002.2
2. Coastal flooding, strong winds & dangerous surf expected through early next week in Northeast Florida, Southeast Georgia (news4jax.com) — https://www.news4jax.com/weather/2026/10/23/coastal-flooding-strong-winds-dangerous-surf-expected-through-early-next-week-in-northeast-florida-southeast-georgia/
3. Secure the Skeletons: St. Johns County warns of high winds and possible flooding through Monday (sjcitizen.com) — https://www.sjcitizen.com/news/secure-the-skeletons-st-johns-county-warns-of-high-winds-and-possible-flooding-through-monday-20261023/
4. Florida’s East Coast braces for extended coastal flooding and high seas (jaxtoday.org) — https://www.jaxtoday.org/news/floridas-east-coast-braces-for-extended-coastal-flooding-and-high-seas-20261019/
5. Coastal flood watch in effect as strong northeast winds threaten moderate to major tidal flooding. (jacksonville.gov) — https://www.jacksonville.gov/news/2026/10/coastal-flood-watch-in-effect-as-strong-northeast-winds-threaten-moderate-to-major-tidal-flooding
6. NWS Jacksonville Briefing Page (weather.gov) — https://www.weather.gov/jax/brief