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Here's the forecast for York for the next few days: Heat, heat and more heat, plus humidity.

The National Weather Service in State College has issued a heat advisory for York County and surrounding areas in effect until 1 p.m. Saturday, followed by an excessive heat watch through the day on Sunday.

Officials said the high temperatures and high humidity are here to stay through the weekend.

"Tomorrow will look like a carbon copy of today," meteorologist Aaron Tyberski said Thursday.

He said the index will reach between 100 and 104 degrees in the afternoon, and temperatures will not begin to subside until the evening, when the sun starts to go down.

Come Saturday, though, the heat index could increase even higher than 104 degrees, according to  National Weather Service meteorologist Craig Evanego.

An excessive heat watch has been issued beginning at 1 p.m. Saturday, following the heat advisory. Evanego said heat watches are issued when there is potential for the heat index to exceed 104 degrees.

“As we get closer, if it looks like that’s going to happen, we will upgrade to an excessive heat warning,” Evanego said Thursday.

The excessive heat watch will be in effect until Sunday evening.

Additionally. Evanego said there is a 50 percent chance of storms Friday, Saturday and Sunday afternoon. He said the storms could be scattered throughout the county, so not everyone will be affected.

People should remember to stay hydrated, do not lock pets or children in unattended cars and check on neighbors who might have trouble getting around or who do not have air conditioning, Tyberski said.

“If you can stay out of the heat or find a place that has some air conditioning, that’s recommended,” Evanego said.

— Reach John Joyce at or on Twitter @JohnJoyceYD.

— Reach Christopher Dornblaser at or on Twitter at @YDDornblaser.

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