California authorities on Sunday ordered 188,000 people to evacuate their homes after an emergency spillway at the Oroville Dam, the nation’s tallest dam, threatened to fail and cause massive flooding downstream. “This is not a drill. Repeat, this is not a drill,” the National Weather Service said. The evacuation was ordered after engineers spotted a hole in the secondary spillway for the 770-foot-tall dam and warned it could fail within an hour. The water level in Lake Oroville, about 150 miles northeast of San Francisco, dropped overnight under the level where it flows over the auxiliary spillway, but officials left the evacuation order in place early Monday.
— TODAY (@TODAYshow) February 13, 2017