Coastal Flood — Coastal Duval, Florida

2025-10-09 to 2025-10-12 · Coastal Duval, Florida

Event narrative

Moderate state tidal flooding impacted the Duval county coast and St. Johns River basin during this event.

On 10/10 at 12:30 pm, the Mayport tide gauge (MYPF1) reached 2.44 ft MHHW during high tide. Moderate tidal flooding impacts begin at 2.3 ft MHHW at this location. The Fort George State Park gauge reached 2.86 ft MHHW at 12:36 pm. Moderate tidal flooding impacts begin at 2.5 ft MHHW at this location. At 12:42 pm, the gauge at Fulton Mariner's Point (FMPF1) reached 2.64 ft MHHW at high tide. Moderate tidal flooding impacts begin at 2.1 ft MHHW at this location. At 1:30 pm, the St. Johns River at Mill Cove (MCJF1) reached 2.45 ft MHHW. Moderate tidal flooding impacts begin at 2.1 ft MHHW at this location. At 1:24 pm, the gauge at the Dames Point Bridge (DMSF1) reached 2.49 ft MHHW. A second Dames Point Bridge gauge (DPBF1) reached 2.37 ft MHHW at 1:15 pm. Moderate tidal flooding impacts begin at 2.1 ft MHHW at these Dames Point Bridge locations. At 2:15 pm, the gauge at Clapboard Creek (CCJF1) near Sheffield Rd reached 2.30 ft MHHW. Moderate tidal flooding impacts begin at 2.1 ft MHHW at this location. At 2:12 pm, the gauge at Tiger Point (TPJF1) reached 2.32 ft MHHW. Minor tidal flooding impacts begin at 1.5 ft MHHW and moderate impacts begin at 2.5 ft MHHW at this location. At 2 pm, the St. Johns River at the Main Street Bridge (MSBF1) reached 2.1 ft MHHW. Moderate tidal flooding impacts begin at 2 ft MHHW at this location. At 2:45 pm, Pottsburg Creek at Beach Blvd (PCUF1) reached 2.73 ft MHHW. Moderate tidal flooding impacts begin at 2.2 ft MHHW at this location.

On 10/11 at 2 am, the gauge at Pottsburg Creek (PCUF1) near Beach Blvd (U.S. Highway 90) reached 2.27 ft MHHW. Moderate tidal flooding impacts begin at 2.2 ft MHHW at this location.

On 10/11 at 1:10 pm, the Mayport gauge reached 2.40 ft MHHW during high tide. At 2:09 pm on 10/11, the Dames Point Bridge gauge reached 2.46 ft MHHW. At 2:36 pm, the Main Street Bridge gauge reached 2.15 ft MHHW at high tide. Tidal flooding was reported in South Jacksonville Beach.

On 10/12 at 2:54 am, the Main Street Bridge gauge reached 2 ft MHHW. At 12 pm, the public shared images of parking lot flooding near the Hogan's Creek drainage and Maxwell House in Jacksonville due to tidal flooding. The lot was closed to the public. Tidal flooding was also reported along Puckett Creek near Mayport and along Trout River Blvd.

Wind gusts through the event increased above 40 mph during the afternoon of 10/9 when Naval Station Mayport (AWOS) measured a non-thunderstorm gust of 41 mph. Wind gusts of 40-50 mph were reported along the Duval county coast from Mayport to Jacksonville Beach to Fort Caroline consistently through the pre-dawn hours of 10/10. The peak wind gust observed during this timeframe was at Mayport of 51 mph at 9:56 pm on 10/9. Another period of gusts in the 40-50 mph occurred during the late afternoon of 10/10 when through pre-dawn of 10/11. The peak coastal gust during this timeframe was measured at Mayport (AWOS) of 49 mph at 10:52 pm.

Wider weather episode

An extended duration local nor'easter wind event developed October 9th and persisted through the 12th between high pressure wedging down the SE US coast and a sharpening coastal trough axis over the local coastal waters. Gusty winds of 40-51 mph impacted coastal areas, with the strongest winds from 10/9 in the afternoon through 10/10 in the evening along the Duval county coast of 51 mph. Tidal flooding reached moderate levels along the coast, Intracoastal Waterway and inland within the St. Johns River and its tributaries 10/10 through 10/12. This inundation flooded roads and surrounded some vulnerable homes with flood water around high tides. Waves of showers moved onshore with localized flooding rainfall.

Source: NOAA Storm Events Database, event_id 1293665. Narrative written by the NWS forecast office that issued the report.