A flash flood is in effect for central Pennsylvania until midnight.

Thursday's forecast calls for scattered showers before 11 a.m., then scattered showers and thunderstorms until 1 p.m., according to the National Weather Service. Showers are likely and thunderstorms possible after that. Some of the storms could produce heavy rainfall, and some areas could see 2 to 3 inches of rain over a short period of time.

There's a chance of showers and thunderstorms Friday, which should be mostly cloudy with a high near 81. Showers and thunderstorms are likely Friday night, when the temperature should dip to a low of around 57.

Saturday should be sunny, with a high near 79 and a low of around 52.