Significant flooding in northern West Virginia overnight claimed the lives of at least four people, and more storms are still expected through Sunday night.

West Virginia Gov. Patrick Morrisey issued a state of emergency in Ohio County on Sunday as the search for those who were reported to be missing continued.

At least three people were killed and several others remained missing Sunday as flash flooding tore through a West Virginia county. About 2.5 to 4 inches of rain fell in 30 minutes across Ohio County, in the state’s northern panhandle west of Pennsylvania, according to county emergency management director Lou Vargo.