Lightning strike triggers transformer explosion in Mount Pleasant, South Carolina

On 11 August 2025, a lightning strike during a thunderstorm hit a power line at the intersection of Highway 17 and Shelmore Boulevard in Mount Pleasant, South Carolina, and a nearby transformer exploded shortly afterwards. Police video showed flames at the point of the lightning strike followed by sparks and flames from the transformer on the opposite side of the road. The event brought down power lines across the roadway and caused power outages in the area. First responders managed traffic at seven intersections for about three hours while utility crews carried out repairs. No injuries were reported, and Dominion Energy restored power and removed the downed wires. This account is based on a single news report; further details on the transformer's protection equipment and full outage scope have not yet been reported.

A direct lightning strike during a thunderstorm struck a power line and is reported to have caused the transformer to explode. No independent engineering investigation has been reported.

1. Overhead distribution transformers can be damaged by direct lightning strikes despite standard protection measures.
2. Coordinated response between police, traffic management and utility crews can help limit disruption after sudden transformer failures.
3. As reporting is limited to a single source, further verification of outage duration and equipment damage is needed before firmer conclusions are drawn.

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