CHARLESTON, SC (WCSC) - Thursday afternoon's heat index remained slightly lower than Wednesday's, but it still went into triple digits.
Shortly before 3 p.m., the heat index reported in North Charleston and Mount Pleasant was 105 degrees.
Meteorologist Stephanie Sine said a lower dew point contributed to the lower heat index on Thursday.
The Live 5 First Alert Weather team set Wednesday and Thursday as First Alert Weather Days because the heat index, a measurement of what the outside temperature feels like, could reach to between 105 and 110 degrees.
"We'll see heat indices in the triple-digits," Chief Meteorologist Bill Walsh said. "It's early for this time of the year, but we want to give you the first alert to the dangers."
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Thursday's high is expected to reach 97 degrees. Isolated afternoon storms are possible Thursday. The heat index Wednesday afternoon got up to 106 degrees.
Dorchester County Emergency Management Division officials tweeted out a reminder about the importance of staying hydrated:
"Listen to your mother," the post stated. "Drink plenty of water and stay hydrated."
In addition to drinking plenty of fluids, if you must be outdoors, wear lightweight clothing and stay out of direct sunshine.
In addition, know the signs of heat illnesses and be sure to check on those who are most susceptible to the heat such as young children and the elderly. Never leave children and pets in a vehicle, especially with the windows rolled up since temperatures can be much higher inside the vehicle.
To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air-conditioned environments.
Anyone overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency: call 911.