A heat advisory is in effect for Mecklenburg, Union, Cabarrus and Rowan counties from noon to 8 p.m. Wednesday.
An expected high of 96 and moderate humidity could make it feel like 105 degrees and increase the potential for heat-related illnesses, according to the National Weather Service office in Greer, S.C., which issued the advisory.
Reschedule strenuous activities, wear lightweight and loose-fitting clothes and drink plenty of water, the Weather Service recommends.
Mecklenburg County EMS received a record number of heat-related emergency calls Tuesday, Observer news partner WBTV reported.
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Medic fielded 12 heat-related calls compared with five calls normally per day in summer, Medic Operations Supervisor Kenny Phillips told WBTV.
Officials in York County, S.C., said a 55-year-old man died of heat exposure this week, according to WBTV.
Wednesday should be sunny, but with only a 30 percent chance of showers and thunderstorms mainly after 4 p.m.
The chance of thunderstorms is even slimmer Thursday and Friday, when the mercury could hit 94 both days.
The chance of rain is forecast to rise to 40 percent Sunday and 50 percent Monday, with anticipated highs of 93 Sunday and 91 Monday.
While seven N.C. mountain counties remain in “severe drought” status, northern Mecklenburg and Gaston, Lincoln and Cleveland counties are classified as “abnormally dry” on the U.S. Drought Monitor.
“Abnormally dry” is the lowest of the government’s five drought classifications.