The US National Park Service said on the 30th that flash floods broke out in Grand Canyon National Park in Arizona on the 29th. Currently, more than 20 people are listed as likely to be missing or whose whereabouts are unknown.

The US National Park Service said on the 30th that flash floods broke out in Grand Canyon National Park in Arizona on the 29th. Currently, more than 20 people are listed as likely to be missing or whose whereabouts are unknown.