There have been no confirmed reports of tornado sightings or major swaths of damage that could have been caused by a tornado, said Robert McAleer, director of the Maine Emergency Management Agency.

Several heavy thunderstorms began moving through Maine about 6 p.m. Tornado warnings were issued for York and Cumberland counties.

Trees were blown down in a mile-long area around Foss Road and Range E Road in Limerick, but there is no evidence the trees were damaged by a tornado, McAleer said. 

He said about 10,000 homes in Maine are now without power.

Central Maine Power said power outages began around 6 p.m.

The power outages are mostly in Androscoggin, Cumberland and York counties. Power lines are also down Franklin, Knox, Oxford, Lincoln and Sagadahoc counties. 

A tornado warning for northern York Country and western Cumberland County were issued between 6:17 p.m. and 6:45 p.m. A warning for east Windham and Falmouth went out shortly after 7 p.m. The warnings expired at 8 p.m.