Charleston, SC, August 25, 2025
News Summary
Charleston experienced a historic rainfall event on August 22 and 23, leading to flash floods that caused significant road closures and property damage. With 8 to 12 inches of rain overwhelming drainage systems, emergency services responded to aid those stranded in rising waters. Community efforts included clearing sewer grates, as concerns grow regarding groundwater levels amid the ongoing hurricane season.
Charleston, SC – A record-breaking rainfall event in Charleston on August 22 and 23, 2025, has resulted in significant flash flooding, causing dozens of road closures and damage to property. The storm delivered a staggering total of between 8 to 12 inches of rain to the area, overwhelming the city’s drainage systems and leaving many vehicles stranded in floodwaters.
According to the National Weather Service, Charleston International Airport recorded 4.16 inches of rain on August 22 alone, while a gauge on Charleston’s peninsula registered 4.10 inches that day and an additional 3.95 inches on August 23. This rainfall, combined with high tides and already saturated soil, created hazardous conditions across the region.
A flash flood warning was issued for much of downtown Charleston, extending through 12:15 p.m. on August 23. Simultaneously, a broader flood warning was in effect until midnight for areas including North Charleston, Mount Pleasant, and surrounding islands. As precipitation levels for August in the Lowcountry reached between 15 to 25 inches, the National Weather Service expressed concerns about the groundwater situation as the Atlantic hurricane season progresses.
Emergency response teams sprang into action as flash floods wreaked havoc, prompting police to close streets around the Medical University of South Carolina due to thigh-deep water, particularly around Cannon Park. Residents found themselves navigating the bleak situation as flooded vehicles lined the streets, and first responders worked tirelessly to provide assistance. Scenes unfolded across the city as community members took initiatives like clearing sewer grates to expedite water flow in affected areas.
In response to the emergency, the city of Charleston opened two public garages for free parking as part of its disaster response tactics. However, the ongoing severe weather continued to pose further risks, with additional rainfall anticipated for August 23 that was expected to worsen flooding. The West Ashley Library, one of the affected establishments, was forced to close on August 23 due to the bleak conditions but plans to reopen on August 25.
The city’s road closure website has documented extensive closures across downtown Charleston, severely impacting local travel and businesses. This situation remains fluid, with ongoing updates being provided to keep the community informed about conditions and emergency measures being implemented.
In light of these alarming weather events, lead meteorologists have indicated that the saturated ground and high tides could exacerbate risks for the remainder of the hurricane season. Residents are urged to remain vigilant and stay updated with the latest weather information as the storm evolves and conditions change.
Impact of the Rainfall
- Rainfall total: 8 to 12 inches over two days
- Road closures: Dozens of roads affected
- Vehicle damage: Many stranded in floodwaters
Emergency Responses
- Opening of garages: Two city garages opened for free parking
- Street closures: Streets around MUSC closed due to flooding
- Community efforts: Residents clearing sewer grates
Warnings and Forecast
- Flash flood warning: Issued until 12:15 p.m. on August 23 for downtown Charleston
- Flood warning: Extended until midnight for North Charleston, Mount Pleasant, and islands
- Additional rainfall: More significant flooding likely on August 23
Context
This unusual weather pattern arises amid a broader trend of shifting weather dynamics, highlighting the impact of climate change on local conditions. The Cold Front stalling over the region has compounded the effects, leading to such unprecedented rainfall totals.
FAQ
What caused the record rainfall in Charleston?
The record rainfall was primarily due to a stalled cold front, high tides, and saturated soil conditions. These factors combined to produce a storm that dumped between 8 to 12 inches of rain over two days.
What areas were most affected by the flooding?
The flooding primarily affected downtown Charleston, including the peninsula and parts of West Ashley, North Charleston, Mount Pleasant, and surrounding islands.
What emergency measures have been taken?
Two city garages were opened for free parking, and streets around emergency areas have been closed due to severe flooding. Residents were also actively involved in clearing sewer grates to improve water flow.
Key Features of the Flash Flooding
- Date: August 22-23, 2025
- Total Rainfall: 8 to 12 inches
- Key Response Actions: Opening of garages, street closures, community-assisted drainage
- Impact: Extensive property damage and transportation disruptions
Deeper Dive: News & Info About This Topic
HERE Resources
Charleston Faces Record-Breaking Flooding Challenges
Charleston’s Initiative for 3,500 Affordable Housing Units
Flooding Causes Road Closures in Charleston Area
Charleston’s Mayor Announces Plan for 3,500 New Affordable Housing Units
Charleston Prepares for Major Rainfall Amid Tropical Storm Debby
Charleston County Council Approves Major Road Safety Enhancements
Charleston City Council Approves $73 Million Bond for Infrastructure
Myrtle Beach Woman Arrested for Arson and Burglary
Final Federal Reimbursement Received for Charleston Harbor Deepening Project
Charleston Hosts Variety of Events This August
Additional Resources
- Weather.com: Record Rain Causes Flash Flooding in Charleston
- Wikipedia: Flash Flood
- Post and Courier: Rainfall Flash Flooding Impact Downtown Charleston
- Google Search: Charleston flash flooding August 2025
- ABC News 4: List of Road Closures Around Charleston
- Encyclopedia Britannica: Flood
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.
