Coastal Flood — Western St. Johns County, Florida
2025-10-03 · Western St. Johns County, Florida
Event narrative
On 10/3 at 12:30 pm, the tide gauge at Racy Point along the St. Johns River reach reached 1.99 ft MHHW datum at 12:30 pm. Moderate tidal flooding for this location begins at 2 ft MHHW. On 10/3 at 11:30 am, the gauge at Trout Creek Marina along Trout Creek measured 2.05 ft MHHW datum around 1:30 am. Moderate flooding for this location begins at 2 ft MHHW. A former NWS employee was onsite before the peak crest and reported water over bank full & overflowing the bulkhead at the marina. On 10/3 at 11:15 am, the Shands Bridge gauge measured 2.1 ft MHHW datum around 11:15 am. Moderate tidal flooding for this location begins at 2 ft MHHW. At 11 pm on 10/3, the gauge at St. Johns River at Shands Bridge GCEF1 measured 2.25 ft MHHW datum around 11:00PM. Moderate Tidal Flooding begins at 2.00 ft MHHW at this location. On 10/4 at 12:30 am, the USGS gauge along the St. Johns River near Racy Point measured a peak water level of 2.2 feet above Mean Higher High Water (MHHW) around 12:30 AM Saturday. Moderate tidal flooding at this gauge begins at 2 feet above MHHW.
Wider weather episode
An extended duration nor'easter developed on September 30th and continued through October 6th. This event produced an extended period onshore flow combined with a period of high astronomical tides (spring or neap tides). The higher-than-normal tides combined with storm surge with the local nor'easter produced minor to moderate tidal flooding daily around high tides. The more impacted tidal flooding locations included the St. Johns River basin between downtown Jacksonville and Satsuma as well as the Intracoastal Waterway of St. Johns and Flagler counties were several days of moderate tidal flooding occurred in early October. Moderate tidal flood impacts include structures surrounded by tidal flood water and inundation of some roads.
Source: NOAA Storm Events Database, event_id 1289623. Narrative written by the NWS forecast office that issued the report.