on red alert

on red alert

In the highest possible state of readiness to address or prepare for some imminent danger, threat, trouble, or difficulty. The soldiers patrolling the border are on red alert. As soon as I heard my window break in the middle of the night, I was on red alert to fight off an intruder.
See also: alert, on, red

on ˌred aˈlert

prepared for an emergency or for something dangerous to happen: Following the bomb blast, local hospitals have been put on red alert.
See also: alert, on, red
References in periodicals archive ?
ROTATIONAL brownouts were experienced in Luzon on Tuesday after the grid was placed on red alert notice, the 11th time since March this year.
Blackouts hit Luzon as grid on red alert anew !-- -- Danessa Rivera (The Philippine Star) - June 19, 2019 - 12:00am MANILA, Philippines Parts of Luzon experienced power interruptions yesterday after the grid was placed on red alert anew.
NGCP earlier placed the Luzon grid on red alert from 10 a.m.
"His signature was conditional on Red Alert agreeing to a separate order," Askew said.
Luzon grid on red alert anew !-- -- Danessa Rivera (The Philippine Star) - May 4, 2019 - 12:00am MANILA, Philippines The Luzon grid was placed on red alert anew yesterday as more plants went on unplanned shutdown.
The Luzon grid will be placed on red alert again Thursday, from 10 a.m.
Based on Red Alert's math, the shares are worth $48.7 million.
on Monday when the power grid goes on red alert, the Department of Energy (DOE) said.