Update: The National Weather Service issued a severe thunderstorm warning effective until 6:30 p.m. for southeastern York County in the area of Delta, and the area east and northeast of it in Lancaster County.

A line of severe thunderstorms is rolling through the area. Winds in the storms are gusting in excess of 60 mph, the NWS says.

The previously reported watch is still in place for the rest of York County until 9 p.m.

Originally reported: The National Weather Service has issued a severe thunderstorm watch for York County and the surrounding area.

The watch is in effect until 9 p.m.

The weather service said there's a slight risk of severe thunderstorms this afternoon. Storms could be accompanied by hail and damaging winds.

A flash flood watch has also been issued and ends at midnight.

The forecast calls for an 80 percent chance of rain or thunderstorms through Thursday in York. The chance of rain decreases to 50 percent on Friday, and precipitation is expected to clear out in time for July 4 fireworks displays.

Friday night's forecast calls for partly cloudy skies with a low of 58 degrees.