UPDATE: Heat advisory affecting Lowcountry until Tuesday evening
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On Tuesday at 2:23 a.m. the NWS Charleston SC released an updated heat advisory valid between 11 a.m. and 7 p.m. The advisory is for Inland Berkeley, Coastal Colleton, Coastal Jasper and Tidal Berkeley as well as Beaufort and Charleston counties.
The NWS informs, "Heat index values up to 110 degrees expected."
"Hot temperatures and high humidity may cause heat illnesses," adds the NWS.
This advisory is in effect until 7 p.m.
During heat waves, consider the following tips from the NWS
- Stay hydrated: Make sure to drink plenty of fluids.
- Seek shelter: Stay indoors in an air-conditioned room to keep cool.
- Avoid direct sun exposure: Protect yourself and check on vulnerable relatives and neighbors.
- Child and pet safety: Never leave young children and pets unattended in hot vehicles - car interiors can reach lethal temperatures in a matter of minutes.
- Exercise caution outdoors: If you work or spend time outside, take additional safety measures.
- Find the right time: Consider rescheduling strenuous activities to early morning or evening if possible.
- Know the red flags: Understand the signs and symptoms of heat exhaustion and heat stroke.
- Dress appropriately: Wear lightweight, loose-fitting clothing to stay comfortable.
To minimize risks during outdoor work, the Occupational Safety and Health Administration (OSHA) advises incorporating frequent rest breaks in shaded or air-conditioned areas. If someone experiences heat-related symptoms, promptly relocate them to a cool and shaded spot. In case of an emergency, dial 911.
Source: The National Weather Service
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This story was originally published July 7, 2026 at 2:26 AM.