6 p.m. update The severe thunderstorm warnings have expired, but a severe thunderstorm watch remains in effect until 8 p.m.
Scattered power outages are being reported throughout the county, including one resulting from a traffic accident along I-83 near Spry that has left at least 100 customers without power.
Met-Ed has restored power to most residents in the Shrewsbury and Stewartstown areas, where a half dozen outages were earlier reported.
4:15 p.m. update: A second severe thunderstorm warning has been issued for western York County until 5:15 p.m.
That warning stems from a line of thunderstorms in the McConnellsburg area. Gettysburg is included in the warning area.
4 p.m. update: Met-Ed is reporting scattered power outages throughout the area, with most occurring in the Shrewsbury and Stewartstown areas.
As of 4:30 p.m., six different outages were reported in that area, affecting hundreds of customers. Minor outages were also being reported in Manheim Township.
3:30 p.m. update: A severe thunderstorm warning has been issued for southern York County until 4:30 p.m.
At 3:30 p.m., a severe thunderstorm was reported in Lineboro, Md., and was moving east at 25 mph.
Areas included in the warning area include Dallastown, Red Lion and Glen Rock.
Previous story: The National Weather Service in State College has issued a severe thunderstorm watch for York County.
The weather service said winds could gust to 30 miles per hour, and penny-size hail is possible.
The warning expires at 8 p.m. Friday, and Saturday should provide a little relief before the storms return for several more days.
York will have showers throughout the day on Friday, with thunderstorms likely after 2 p.m., according to the National Weather Service. Some storms around the area will have heavy rain, frequent lightning and hail as well as gusty winds.
Friday's high will be 86 and the low 65.
Saturday will be partly sunny, with a slight chance of showers and thunderstorms, especially after 3 p.m., the forecast said. The high will be 85 and the low 67.
Sunday will be cloudy, with showers and thunderstorms likely after noon, the NWS said. The high will be 82 and the low 69.
Monday through Wednesday will be much the same, with a chance of showers and thunderstorms each day. Highs will be in the low 80s and lows in the upper 60s.