Tornadoes rampaging through Oklahoma have dumped heavy rains, stranding motorists in flood water and deluging homes across Oklahoma City and the surrounding areas.
The US National Weather Service later lifted a tornado warning for the region, but said flash floods remain a clear threat.
Do not think the flash flooding is over. The storms are building back to the south now. Additional rainfall still expected for metro. #okwx
Power utilities Oklahoma Gas and Electric and Ameren said 171,000 customers were without power in Oklahoma, Missouri and Illinois, which had been under a tornado warning on Thursday.
More top news
A manhunt is being undertaken after two men were shot - one fatally - at a residential site on Thursday evening.
Residents of Fort McMurray were restricted to salvaging only their clothes and pets as they were evacuated.
Warm sunshine to end the working week