Heat Advisory

Locations Affected

Savannah, GA ∙ Charleston, SC ∙ North Charleston, SC ∙ Mount Pleasant, SC ∙ Grays Hill, SC ∙ Charleston-North Charleston Division, SC ∙ Henderson, GA ∙ Frogmore, SC ∙ Port Wentworth, GA ∙ Bull Island, SC

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Charleston SC 218 PM EDT Tue Aug 18 2026 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values of 113 degrees or higher. For the Heat Advisory, heat index values up to 110 expected. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...For the Extreme Heat Warning, until 8 PM EDT this evening. For the Heat Advisory, from 11 AM to 8 PM EDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

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