Georgia, 2020

Coastal Flood in Georgia, September 21, 2020

September 21, 2020 · NWS JAX · 2 events in 2 counties and zones

Surface high pressure centered over New England will shifted south which continued strong northeasterly flow over the region. A more stable and drier airmass was in place which produced less widespread shower activity moving onshore compared to previous couple of days.

Where it happened

Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS JAX wrote it up.

Surface high pressure centered over New England will shifted south which continued strong northeasterly flow over the region. A more stable and drier airmass was in place which produced less widespread shower activity moving onshore compared to previous couple of days. Gusty northeasterly winds continued with the highest gusts 40-45 mph along the immediate northeast Florida coast. A wind advisory was in effect through the day for coastal northeast Florida.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before the first event at Sep 21, 6:45 AM EST, 5 hours earlier.

Area forecast discussion, Sep 21, 6:45 AM EST, 5 hours before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 coastal flood. Local standard time, as filed.

Coastal Flood, Coastal Glynn

When
September 21, 11:45 AM EST
Where
Coastal Glynn forecast zone
Reported by
Official NWS Observations
Coordinates
31.213, -81.494 (the zone’s center; the record gives no point)

The NOS tide gauge at the St. Simons Island Village Pier measured a peak water rise of 2.30 ft MHHW datum. This value was within the minor flood category for this site.

Coastal Flood, Coastal Camden

When
September 21, 12:45 PM EST
Where
Coastal Camden forecast zone
Reported by
Other Federal Agency
Coordinates
30.923, -81.636 (the zone’s center; the record gives no point)

The tide gauge at Sea Camp Dock on Cumberland Island measured a total water level rise of 2.40 ft MHHW datum. This value was within the Moderate Flood category for this site.

What these are

Coastal Flood
Flooding of coastal land by the sea, from storm surge, onshore wind or high tides.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Georgia in 2020Every state in 2020This day in weather historyWarnings in Georgia, September 2020

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 921724, 921725.