FloodZoneMap.org

Flash Flood — Chatham, NC

Aug 2, 2018

Heavy rain showers and thunderstorms developed over central NC in association with a series of disturbances moving through the long wave trough aloft. Deep moist advection and unidirectional flow through the atmosphere resulted in training of heavy rain and thunderstorms. Saturated antecedent conditions contributed to the flash flooding that occurred as a result of the training storms. A cluster of storms became severe during the afternoon, resulting in sporadic downed trees and power lines whil

Source: NOAA National Weather Service Storm Events Database (event 781991). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Chatham, NC

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

View Chatham County flood data →

More Flood Stories

Flash Flood2 deaths

Chatham, NC · Jul 6, 2025

Tropical Storm Chantal made landfall over northeastern South Carolina during the morning hours of July 6. The remnants of Chantal then tracked west-northwest into portions of central North Carolina, stalling out over the area before tracking east-northeast into Virginia by the…

Read the full account →
Flash Flood1 death$20K damage

Chatham, NC · Jul 6, 2025

Tropical Storm Chantal made landfall over northeastern South Carolina during the morning hours of July 6. The remnants of Chantal then tracked west-northwest into portions of central North Carolina, stalling out over the area before tracking east-northeast into Virginia by the…

Read the full account →
Flash Flood$1.6M damage

Chatham, NC · Jul 6, 2025

Tropical Storm Chantal made landfall over northeastern South Carolina during the morning hours of July 6. The remnants of Chantal then tracked west-northwest into portions of central North Carolina, stalling out over the area before tracking east-northeast into Virginia by the…

Read the full account →
Flood$6.3M damage

Chatham, NC · Sep 17, 2018

A ridge of high pressure over eastern North America stalled Florence's forward motion a few miles off the southeast North Carolina coast on September 13th.

Read the full account →