320 WWUS72 KCHS 110618 NPWCHS URGENT - WEATHER MESSAGE National Weather Service Charleston SC 218 AM EDT Tue Aug 11 2026 GAZ217>219-239>241-SCZ151-111430- /O.EXA.KCHS.HT.Y.0019.260811T1500Z-260812T0000Z/ Coastal Bryan-Inland Chatham-Coastal Chatham-Coastal Liberty- Inland McIntosh-Coastal McIntosh-Coastal Jasper- Including the cities of Jasper, Savannah, Wilmington Island, Fort Mcallister, Townsend, Levy, Oak Level, Pooler, Tybee Island, Garden City, Darien, and Chelsea 218 AM EDT Tue Aug 11 2026 ...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 110 expected. * WHERE...In Georgia, Coastal Bryan, Coastal Chatham, Coastal Liberty, Coastal McIntosh, Inland Chatham, and Inland McIntosh Counties. In South Carolina, Coastal Jasper County. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...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. && $$ SCZ148>150-152-111430- /O.CON.KCHS.HT.Y.0019.260811T1500Z-260812T0000Z/ Beaufort-Coastal Colleton-Charleston-Tidal Berkeley- Including the cities of Hilton Head Island, Edisto Beach, Daniel Island, North Charleston, Charleston, Beaufort, and Mount Pleasant 218 AM EDT Tue Aug 11 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 110 expected. * WHERE...Beaufort, Charleston, Coastal Colleton, and Tidal Berkeley Counties. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NED