Charleston Rumbles with December Earthquake
Charleston, South Carolina, experienced its first recorded earthquake of December early Tuesday morning. At 2:12 a.m., the U.S. Geological Survey confirmed a 1.6 magnitude quake occurring near Summerville. This seismic event happened approximately 3.7 miles below the earth’s surface, as reported by the South Carolina Emergency Management Division (SCEMD).
Recent Seismic Activity
This incident marks the 28th earthquake recorded in South Carolina this year, a number mirroring the total recorded in 2023, according to the state Department of Natural Resources (DNR). Charleston has seen two confirmed earthquakes in recent weeks, following an extended period of relative calm in the Lowcountry. The previous small quake was detected near Centerville on November 20, which raised awareness among residents.
Unusual Earthquake Patterns
Historically unusual, earthquakes in South Carolina have predominantly been confined to the Midlands region, especially Kershaw County, which has recorded 64 earthquakes since June 2022. Noteworthy quakes in that area also include some of the strongest to occur recently, registering magnitudes of 3.5 and 3.6 on June 29, 2022. In comparison, the last strong quake recorded in the state was a 4.1 magnitude event in McCormick County in 2014.
Public Reaction and Reporting
Residents in the Charleston area who felt any shaking, rumbling, or tremors are encouraged to report their experiences to the USGS. However, the SCEMD classified Tuesday’s quake as a micro quake, which typically does not cause significant damage. Experts at Michigan Technological University note that earthquakes of magnitude 2.5 or lower often go unnoticed by individuals since they are usually detected by instruments rather than felt by people.
Understanding the Trends
As of December 2024, South Carolina has witnessed at least 132 earthquakes since January 2022, with the majority occurring in the Midlands. Specifically, 111 earthquakes were recorded in the Columbia area following a notable 3.3-magnitude quake on December 27, 2021. Statistically, South Carolina has generally seen between six to ten quakes annually. State geologist Scott Howard has previously estimated that around 200 smaller tremors may have gone undetected within this time frame.
Possible Connections and Precautions
Experts are investigating the increased seismic activity, with some suggesting potential links between the Wateree River region and the recent quakes located northeast of Columbia. A combination of factors, including water level fluctuations and previous moderate earthquakes, could be contributing to the current trend. Despite this uptick in minor seismic events, state officials assert that there is no current indication of a larger quake on the horizon. SCEMD Director Kim Stenson emphasizes preparation, advising residents to review earthquake insurance policies and secure items at home.
Historical Context
The most intense earthquake ever recorded in South Carolina occurred in Charleston in 1886, registering a devastating 7.3 magnitude and affecting millions across a wide area. The event claimed the lives of 60 individuals and served as a stark reminder of the potential for significant seismic activity in the region.
While the recent earthquake in Charleston did not result in reported injuries or major damage, it serves as a reminder of the need for residents to stay informed and prepared for future seismic events.
