CHARLESTON, S.C. (WCSC) - The National Weather Service extended a heat advisory just before noon Tuesday to include additional Lowcountry counties where the heat index could soar above 105 degrees.
The advisory, which originally covered only Beaufort and Jasper Counties, now also includes Charleston, coastal Colleton and tidal Berkeley Counties. In the latter counties, the heat index could reach between 105 and 108 degrees, while in Beaufort County, it could reach up to 110.
The advisory in effect until 6 p.m.
Heat index values of up to 106 degrees are expected because of the combination of high temperatures and high humidity. That could cause heat illnesses.
Temperatures across the Lowcountry could reach a high of 95 degrees and there is a chance for scattered, possibly strong thunderstorms. Heat indices across the Lowcountry could reach just past the 100-degree mark, Live 5 Meteorologist Danielle Prinz said.
To avoid heat-related illnesses, you should drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances.
Anyone who shows signs of a possible heat stroke should be moved to a cool, shaded location.
A heat stroke is an emergency: Call 911 immediately.