Coastal Flood — Coastal Glynn, Georgia

2021-11-05 to 2021-11-07 · Coastal Glynn, Georgia

Event narrative

On Friday, November 5th, at 9:30 am, the Saint Simons Island tide gauge (BRNG1) reached a high tide of 2.31 ft MHHW datum. Minor tidal flooding impacts begin around 2.0 ft MHHW. On Saturday, November 6th, around 10:30 am, the gauge reached 2.45 ft MHHW. Moderate flooding impacts begin around 2.50 ft MHHW. At that time, this high tide value was the 7th highest on record for this location and was the highest water level since Hurricane Irma in 2017. On Sunday, November 7th, around 10:45 am, the gauge reached 2.79 ft MHHW. This was now the 5th highest water level on record for this location.

Wider weather episode

An area of low pressure developed across the southern Gulf of Mexico on Friday Nov. 5th and tracked eastward across north-central Florida Friday night, deepening offshore of the local NE FL Atlantic coast on Saturday Nov. 6th as strong surface high pressure wedged southward north of the region. This created a rare, true Nor'Easter event for the local area which including coastal and moderate tidal flooding with inundation of 2-3 ft at high tides and damaging wind gusts for coastal and marine areas. Moderate to major coastal erosion occurred. For coastal SE Georgia, the strongest winds occurred during the early morning hours of Saturday, November 6th, with gusts of 40-50 mph.

Source: NOAA Storm Events Database, event_id 991486. Narrative written by the NWS forecast office that issued the report.