Charleston, South Carolina – Blistering heat and dangerous storms are bearing down on Southeast South Carolina and Southeast Georgia this afternoon, with Charleston and surrounding areas facing heat indices soaring to 108° and the threat of damaging thunderstorms.
According to the National Weather Service in Charleston, heat index values will peak between 100-105° across most of the region, but could spike to 105-108° in parts of Berkeley and Charleston Counties near the sea breeze. Residents are urged to limit outdoor activity and stay hydrated as the worst conditions persist from 11 a.m. to 6 p.m. Monday.
By early afternoon, a second threat emerges as isolated strong to severe thunderstorms move across the Lowcountry and coastal Georgia, especially from 2 p.m. to 7 p.m. Cities like Summerville, Walterboro, and Savannah could see storms with wind gusts over 50 mph, frequent lightning, and intense rainfall—raising the risk of minor flooding in low-lying areas and poor drainage spots. Downed trees and power outages are possible, especially along busy corridors like I-95 and I-26.
Prepare now: drink plenty of water, avoid outdoor work, secure loose outdoor items, and have a way to receive emergency alerts. Avoid travel during peak storms, and turn around if you encounter flooded roads.
Threats from both heat and storms will persist into the evening, and more advisories may be issued if conditions worsen.
