FloodZoneMap.org

Tropical Storm — Sumter, SC

Aug 30, 2023

Lifting up out of the Big Bend of Florida, Hurricane Idalia weakened to a Tropical Storm as it moved out of southeastern Georgia. The tropical system then moved northeast along the coastal plain of South Carolina. This system produced scattered tree damage, some flooding and one confirmed tornado.

Source: NOAA National Weather Service Storm Events Database (event 1120721). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Sumter, SC

This event is one of many recorded floods in Sumter County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Sumter County flood data →

More Flood Stories

Tropical Storm$200K damage

Sumter, SC · Sep 27, 2024

Tropical Storm Helene formed in the NW Caribbean Sea on September 24. Helene moved northward into the Gulf of Mexico where it strengthened into a hurricane on September 25.

Read the full account →
Flash Flood$20K damage

Sumter, SC · Jun 13, 2025

Diurnally driven convection developed within a moist and unstable air mass characterized by CAPE values greater than 2000 J/kg with weak wind shear and precipitable water values over 2 inches and dewpoints in the lower 70s.

Read the full account →
Flash Flood$10K damage

Sumter, SC · Mar 27, 2023

A stalled surface front combined with upper level energy, copious atmospheric moisture, moderate instability, and moderate to strong shear, to produce showers and thunderstorms, some of which produced large hail and wind damage, along with locally heavy rain and flooding.

Read the full account →
Flash Flood$10K damage

Sumter, SC · Mar 27, 2023

A stalled surface front combined with upper level energy, copious atmospheric moisture, moderate instability, and moderate to strong shear, to produce showers and thunderstorms, some of which produced large hail and wind damage, along with locally heavy rain and flooding.

Read the full account →