Flash Flood Warning Issued for Charleston Metro Area

Charleston, September 7, 2025

News Summary

A flash flood warning is currently in effect for the Charleston Metro area due to thunderstorms causing heavy rainfall. Areas such as West Ashley, North Charleston, and Daniel Island are particularly at risk. With reports of flooding already affecting downtown roads, residents are advised to avoid flooded areas as additional rainfall is expected. Emergency services are operating under modified conditions to ensure safety during these severe weather conditions. The urgency of urban planning in light of the city’s projected population growth underscores the importance of preparedness for such extreme weather events.

Charleston – A flash flood warning has been issued for the Charleston Metro area, effective until 3:15 p.m. on Saturday afternoon. This warning comes as thunderstorms are producing heavy rain across the region, which has already recorded between 1 to 2 inches of rainfall according to Doppler radar. The National Weather Service has identified the areas at risk, including West Ashley, North Charleston, Daniel Island, Mount Pleasant, and James Island.

Residents in the warned regions should prepare for the possibility of an additional 1 to 2 inches of rainfall. Several roads in downtown Charleston have already been affected by flooding, leading to closures that include:

• Calhoun Street – Pitt to Ashley Ave.
• Charlotte Street at Concord
• Cool Blow at Nassau
• E Bay Street between Amherst and Chapel
• Fishburne Avenue and Hagood Avenue
• Huger Street between Benson and Dingle
• King Street at Huger Street
• Morris Street between Jasper and Coming
• Nassau Street at Cool Blow Street
• Ogier Street
• Rutledge Avenue at Simon Street
• Spring Street at Hagood
• Washington Street at Society Street

Motorists are advised by the National Weather Service to avoid flooded roads unless absolutely necessary. Reports have surfaced of vehicles being stranded in floodwaters due to the severe weather conditions. Charleston County Emergency Medical Services are operating under modified conditions to ensure the safety of their response to emergency calls.

With forecasts indicating a possibility of up to 3 additional inches of rain in the coming hours, the concerns surrounding flooding are compounded by high tides. Officials are strongly warning against driving or wading through flooded areas due to the dangers posed by swift currents and potentially unsafe road conditions.

As Charleston’s population grows, projected to reach 1.2 million by 2040, urban planning becomes increasingly critical. This population increase accentuates the need for responsible management of urban development to mitigate the impacts of extreme weather and flooding.

Background Context

The current weather system affecting Charleston is part of a larger pattern of intense thunderstorms that have impacted various regions across the Southeast. Prior flooding incidents in Charleston have highlighted vulnerabilities in local infrastructure during periods of heavy rainfall. This recent warning serves as a reminder of the importance of preparedness in facing unpredictable weather patterns.

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Additional Resources

• Count On 2 News
• Wikipedia: Flash Flood
• Live 5 News
• Google Search: Thunderstorm Warning Charleston
• ABC News 4
• Google Scholar: Flooding in Charleston
• Fox Weather
• Encyclopedia Britannica: Charleston
• Count On 2 Weather
• Google News: Flash Flood Charleston

Author: STAFF HERE CHARLESTON

The CHARLESTON STAFF WRITER represents the experienced team at HEREcharleston.com, your go-to source for actionable local news and information in Charleston, Charleston County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as the Spoleto Festival USA, Charleston Wine + Food Festival, and the MOJA Festival. Our coverage extends to key organizations like the Charleston Metro Chamber of Commerce and the Charleston Museum, plus leading businesses in tourism and maritime industries that power the local economy such as South Carolina Ports Authority and the Charleston Visitor Center. As part of the broader HERE network, including HEREaiken.com, HEREbeaufort.com, HEREchapin.com, HEREcharleston.com, HEREclinton.com, HEREcolumbia.com, HEREgeorgetown.com, HEREgreenwood.com, HEREgreenville.com, HEREhiltonhead.com, HEREirmo.com, HEREmyrtlebeach.com, HEREnewberry.com, HERErockhill.com, HEREspartanburg.com, HEREaustin.com, HEREcollegestation.com, HEREdallas.com, HEREhouston.com, and HEREsanantonio.com, we provide comprehensive, credible insights into South Carolina's dynamic landscape.