The National Weather Service in Charleston, South Carolina, issued a Flood Advisory at 6:03 PM EDT on August 19, effective until 7:30 PM EDT. The advisory covers Berkeley, Charleston, and Dorchester counties in southeastern South Carolina. According to the NWS, Doppler radar indicated a nearly stationary thunderstorm with torrential rainfall over Summerville, with additional rainfall of 1 to 2 inches expected, leading to minor flooding in low lying and poor drainage areas.
KEY FACTS
- The advisory is in effect until 7:30 PM EDT for Berkeley, Charleston, and Dorchester counties.
- Doppler radar showed a nearly stationary thunderstorm over Summerville with torrential rainfall.
- An additional 1 to 2 inches of rain is expected, which could cause minor flooding.
- Affected locations include North Charleston, Summerville, Goose Creek, Ladson, and others.
- The NWS advises caution in low lying and poor drainage areas.
CONTEXT
The Flood Advisory was issued by the National Weather Service office in Charleston, South Carolina, at 6:03 PM EDT on August 19. The advisory is a short term warning, lasting until 7:30 PM EDT, indicating that flooding is imminent or occurring. The primary cause is a nearly stationary thunderstorm producing heavy rainfall over Summerville, as detected by Doppler radar. The NWS expects additional rainfall amounts of 1 to 2 inches, which could exacerbate the situation. Minor flooding is anticipated in low lying areas and locations with poor drainage. The advisory specifically names several communities that may experience flooding, including North Charleston, Summerville, Goose Creek, Ladson, Sangaree, Knightsville, Jedburg, College Park, Lincolnville, and Centerville. This type of advisory is common during the summer months in the Southeast, where slow moving thunderstorms can produce intense rainfall over a short period. Residents are advised to monitor local conditions and avoid driving through flooded roadways.
WHY IT MATTERS
This advisory matters because even minor flooding can disrupt travel, pose risks to pedestrians and drivers, and overwhelm drainage systems in urban areas. The affected region includes densely populated parts of the Charleston metropolitan area, where rapid rainfall can lead to hazardous conditions. Understanding the scope and timing of the advisory helps residents and local authorities take appropriate precautions to protect life and property.
WHAT TO WATCH
- Monitor local weather updates for any extension or cancellation of the advisory.
- Watch for rising water levels in low lying areas and poor drainage zones.
- Be alert for road closures or hazardous driving conditions due to standing water.
- Check on neighbors, especially those in flood prone areas.