WHEELING, W.Va. — The death toll from weekend flooding in West Virginia rose to six as residents tried to clean up with the threat of more rain on the way.

At least two people remained missing in the state’s northern panhandle after torrential downpours Saturday night, Gov. Patrick Morrisey said Monday. As much as 4 inches of rain fell in parts of Wheeling and Ohio County within 40 minutes. The dead included a 3-year-old child.

About an hour to the southeast, heavy rains battered the Marion County community of Fairmont on Sunday, ripping off the outer wall of an apartment building and damaging bridges and roads. No injuries were reported there.

Morrisey declared a state of emergency in both counties. At least 60 homes, 25 businesses and an estimated 30 roads were impacted by flooding, he said.

“It’s just Mother Nature at its worst,” Morrisey said.

In the northern panhandle, vehicles were swept into swollen creeks, some people sought safety in trees and a mobile home caught fire. On Sunday, Morrisey toured the small community of Triadelphia, where five died.

“That was just pure devastation,” he said. “That was brutal.”

Emergency officials in Wheeling sought cleaning supplies, shovels for mud removal and other donations.

A stalled weather system that remained over the same location dumped the destructive amount of rainfall.

As the atmosphere warms, it is able to hold higher amounts of water vapor that can be unleashed as rain during storms.

Rainfall hitting impervious surfaces like roads contributed to the flooding and stormwater management systems were engineered to handle rainstorms of the past, not the sudden downpours juiced by climate change that are now occurring, said Marshall Shepherd, director of the atmospheric sciences program at the University of Georgia.