UPDATE: Mid-South to be hit by heat

MEMPHIS — The National Weather Service has issued a heat advisory for parts of the mid-South, with temperatures and heat indexes to approach or exceed 100 degrees.

The advisory is in place Wednesday and Thursday. Cities in Arkansas, Mississippi and Tennessee will be affected.

These areas could see heat indexes of 105 to 109 degrees, resulting from daytime temperatures in the 90s. Heat index combines air temperature and humidity to reflect how hot it feels.

Heat illnesses are possible and people should check regularly on friends and neighbors. Residents should drink plenty of fluids, stay in an air-conditioned room, or open windows and allow air to circulate.

Three Shelby County residents have died from heat-related causes this year.

Click here for more on the weather in Northeast Mississippi.

The Associated Press

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