Tornadoes leave behind destruction in states of Oklahoma and Michigan, and authorities say more extreme weather ahead.

At least eight people were reported dead over two days after severe storms and tornadoes struck in Oklahoma and Michigan.

Tornadoes leave behind destruction in states of Oklahoma and Michigan, and authorities say more extreme weather ahead.

Tornadoes that swept through Michigan and Oklahoma on Friday killed at least six people and injured several others, authorities in both states said.

Four people were killed in Michigan and two died in Oklahoma, officials say, as severe storms swept across parts of the US.