A wind advisory issued by the National Weather Service remains in effect through noon Thursday for York County and surrounding areas.
At 6:25 p.m. Wednesday, Met-Ed reported that more than 20 customers in York County were without power. The affected areas include Springettsbury, Windsor and York townships and in York City.
About 1,500 customers had been without power shortly after 4 p.m. Wednesday.
The weather service's forecast calls for winds between 25 and 35 mph, with gusts up to 55 mph.
Strong winds could cause tree damage and power outages, the weather service warns.
Earlier this week, the weather service issued a flood watch for York and surrounding areas because of heavy rain expected this evening. The flood watch remains in effect until Thursday morning.
Runoff could cause minor flooding along small creeks and streams and in areas with poor drainage, the weather service said.
The rain will move out of the area overnight, giving way to breezy conditions and a high of 43 degrees on Thursday.
Snow showers are possible Thursday night, when the chance of precipitation is 40 percent.