Afternoon heat could challenge a 105-year-old record set in the Rock Hill region.

Heat that could challenge a 105-year-old record in Rock Hill is forecast to bake the area Friday and Saturday.

Then comes a cold front on Sunday. And there are some indications of a tropical system affecting parts of the Southeast next week, weather experts say.

Meteorologists say high temperatures Friday and Saturday afternoons will be in the upper 90s. The record high in Rock Hill for Friday is 100 degrees, set in 1918. The record for Saturday’s date is 99, set in 1943 and equaled in 2016.

A few thunderstorms developed across the South Carolina Upstate on Thursday afternoon, bringing relief to some areas. But National Weather Service meteorologist Mike Rehnberg said cooling storms are not expected Friday.

“With high temperatures climbing into the upper 90s and dew points at least in the lower 70s, heat index values will climb to just shy of Heat Advisory criteria,” said Rehnberg, who added that Friday’s weather will be “uncomfortable.”

The prospect of near-100-degree heat has forced officials at several area high schools to push back scheduled kickoffs of football games from 7:30 to 8 p.m. Among the games involved in the changes are Rock Hill at South Pointe and Clover at Northwestern.

More heat is expected Saturday, although the National Weather Service’s Trish Palmer said a few thunderstorms are possible in the afternoon.

While highs are expected to reach the low 90s Sunday, a change will be in the works.

Palmer said a cold front will approach the area, increasing the chances of thunderstorms. With the front stalling somewhere near the Carolinas state line, Palmer said shower and thunderstorm chances will remain high from Sunday night through Tuesday.

Some heavy rain is possible from the storms early next week, Palmer said.

And that leads us to the possible tropical trouble.

Some computer guidance is predicting that a tropical storm will form early next week in the southern Gulf of Mexico and push north toward the Florida Gulf Coast and possibly into Georgia and the Carolinas.

“This is something we’ve got to keep an eye on,” said Frank Strait, of the S.C. Climatology Office.

“Most (computer) models show this feature, either as a tropical cyclone and a slug of moisture, passing over or near South Carolina around the middle of next week,” Strait said.