Columbia, South Carolina – A single rumble of thunder today is your signal to act immediately, as lightning can strike within 10 miles of storms across South Carolina during the active spring and summer season.
According to the National Weather Service, lightning often reaches far beyond the heaviest rain, striking areas where skies may still appear partly clear. Across South Carolina, warm, humid air fuels frequent thunderstorms from the Midlands to the coast, especially during the afternoon and early evening hours.
In Columbia, open areas like Finlay Park, the University of South Carolina campus, and stretches along I-26 and I-77 quickly become high-risk zones when storms develop nearby. In Charleston, waterfront areas such as The Battery and along Charleston Harbor face elevated exposure due to proximity to water. Greenville sees similar risks near Falls Park on the Reedy and along I-85, where outdoor activity and open terrain increase vulnerability.
Lightning kills about 20 people annually in the United States, with many more suffering long-term injuries including neurological damage, memory loss, and cardiac complications. Many incidents occur during outdoor sports, construction work, and beach trips when thunder is ignored or storms appear distant.
If you hear thunder, you are already within striking distance. Move indoors immediately into a fully enclosed building or a hard-topped vehicle. Avoid open fields, tall isolated objects, and water. Wait at least 30 minutes after the last thunder before returning outside.
Storm chances will continue across South Carolina through the season, with additional lightning alerts possible as conditions evolve.
