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Extreme Heat Warning Covers Charleston, Beaufort and Coastal Chatham County Monday

The National Weather Service Charleston SC has an Extreme Heat Warning in effect from 11 AM to 8 PM EDT Monday, August 17, 2026, across 11 zones from Coastal Bryan, Georgia, to Tidal Berkeley, South Carolina, with heat index values of 108 to 111 degrees expected.

4 reports on this incident · first at Aug 16, 2026, 2:55 p.m. ET

By AI ReporterUpdated Aug 17, 2026, 10:41 a.m. ET
Official records from the show an in effect on August 17, 2026, for portions of southeast Georgia and southeast South Carolina, including Charleston, Beaufort and Coastal Chatham County. The begins at AM EDT and expires at 8 PM EDT. The same record shows a Heat Advisory in effect until 8 PM EDT this evening. According to the National Weather Service record, heat index values of 108 to 111 degrees are expected across zones. The affected areas are Coastal Bryan, Coastal Chatham, Coastal Liberty, Inland McIntosh, Coastal McIntosh, Inland Berkeley, Beaufort, Coastal Colleton, Charleston, Coastal Jasper and Tidal Berkeley. Cities in the area include Charleston, Mount Pleasant, Chelsea, Hilton Head Island, Oak Level, Darien, Edisto Beach, Jasper, Wilmington Island, Moncks Corner, Goose Creek, North Charleston, Fort Mcallister, Levy, Beaufort, Townsend, Daniel Island and Tybee Island. The record states that heat related illnesses increase significantly during extreme heat and high humidity events, and that hot temperatures and high humidity may cause heat illnesses. Precautions listed by the are to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. The record also directs that young children and pets not be left in unattended vehicles, because car interiors will reach lethal temperatures in a matter of minutes. The was issued under the headline "."

Earlier reports

  1. Aug 16, 2026, 3:05 p.m. ET

    Extreme Heat Warning Extended Through 8 PM EDT Monday for Southeast Georgia and South Carolina

    According to official weather records from the National Weather Service Charleston SC, an Extreme Heat Warning for portions of southeast Georgia and southeast South Carolina runs from 11 AM to 8 PM EDT Monday, August 17, 2026. The alert window extends longer than first issued, following a Heat Advisory in effect until 8 PM EDT Sunday evening.\n\nThe warning covers 11 zones, including Coastal Bryan, Coastal Chatham, Coastal Liberty, Inland McIntosh, Coastal McIntosh, Inland Berkeley, Beaufort, Coastal Colleton, Charleston, Coastal Jasper, and Tidal Berkeley. Affected cities include Charleston, Mount Pleasant, Chelsea, Hilton Head Island, Oak Level, Darien, Edisto Beach, Jasper, Wilmington Island, Moncks Corner, Goose Creek, North Charleston, Fort Mcallister, Levy, Beaufort, Townsend, Daniel Island, and Tybee Island. Heat index values of 108 to 111 degrees are expected.\n\nWeather service records note that heat-related illnesses increase significantly during extreme heat and high humidity events. Authorities advise drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking up on relatives and neighbors. Official records also state that car interiors reach lethal temperatures in a matter of minutes, warning against leaving young children and pets in unattended vehicles.

  2. Aug 16, 2026, 2:59 p.m. ET

    National Weather Service Upgrades Heat Alert to Extreme Heat Warning for Parts of Georgia and South Carolina

    The National Weather Service Charleston SC has upgraded the heat alert for portions of southeast Georgia and southeast South Carolina to an Extreme Heat Warning for Monday, August 17, 2026. According to National Weather Service records, a Heat Advisory remains in effect until 8 PM EDT this evening, while the Extreme Heat Warning starts at 11 AM EDT on Monday and expires at 8 PM EDT that evening. Heat index values are expected to reach between 108 and 111 degrees. Official records list 11 affected zones: Coastal Bryan, Coastal Chatham, Coastal Liberty, Inland McIntosh, Coastal McIntosh, Inland Berkeley, Beaufort, Coastal Colleton, Charleston, Coastal Jasper, and Tidal Berkeley. The warning covers cities including Charleston, Mount Pleasant, Chelsea, Hilton Head Island, Oak Level, Darien, Edisto Beach, Jasper, Wilmington Island, Moncks Corner, Goose Creek, North Charleston, Fort Mcallister, Levy, Beaufort, Townsend, Daniel Island, and Tybee Island. National Weather Service records note that hot temperatures and high humidity cause heat illnesses, which increase significantly during extreme heat events. The record advises people to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check on relatives and neighbors. It also warns not to leave young children and pets in unattended vehicles, where car interiors can reach lethal temperatures in minutes.

  3. Aug 16, 2026, 2:55 p.m. ETFirst report

    National Weather Service Warns Heat-Related Illnesses Will Increase Significantly Under Severe Heat

    According to official National Weather Service records, heat-related illnesses increase significantly during extreme heat and high humidity events, and hot temperatures combined with high humidity may cause heat illnesses. The National Weather Service Charleston SC issued the warning for portions of southeast Georgia and southeast South Carolina. The Extreme Heat Warning begins at 11 AM EDT on Monday, August 17, 2026, and expires at 8 PM EDT on Monday, August 17, 2026. Heat index values of 108 to 111 degrees are expected across 11 zones, covering Coastal Bryan, Coastal Chatham, Coastal Liberty, Inland McIntosh, Coastal McIntosh, Inland Berkeley, Beaufort, Coastal Colleton, Charleston, Coastal Jasper, and Tidal Berkeley. Affected cities include Charleston, Mount Pleasant, Chelsea, Hilton Head Island, Oak Level, Darien, Edisto Beach, Jasper, Wilmington Island, Moncks Corner, Goose Creek, North Charleston, Fort Mcallister, Levy, Beaufort, Townsend, Daniel Island, and Tybee Island. Weather service records advise drinking plenty of fluids, staying in air-conditioned rooms, staying out of the sun, and checking on relatives and neighbors. Official guidance adds that young children and pets must not be left in unattended vehicles, as car interiors will reach lethal temperatures in a matter of minutes.

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Revision history

  1. Version 217 Aug 2026, 14:41current

    Headline now names Charleston, Beaufort and Coastal Chatham County instead of only two states; dek adds the zone span from Coastal Bryan to Tidal Berkeley plus exact times and the 108 to 111 degree figure. Named localities added to the lead. All figures, area and city lists, impacts, precautions and the official record attribution (National Weather Service Charleston SC warning record) retained verbatim; the record's own headline added at the end.

  2. Version 116 Aug 2026, 19:05current

    First published.

  3. Version 116 Aug 2026, 18:55current

    First published.

  4. Version 116 Aug 2026, 18:25

    First published.

  5. Version 116 Aug 2026, 18:59current

    First published.

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