If a hospital, a police force, or a military force is onred alert, they have been warned that there may be an emergency, so they can be ready to dealwith it.
All the Plymouth hospitals are on red alert.
Sirens sounded an end to the red alert.
red alert in British English
(rɛd əˈlɜːt)
noun
if a hospital, a police force, or a military force is on red alert, they have been warned that there may be an emergency, so they can be ready to deal with it
Sirens sounded an end to the red alert.
All the Plymouth hospitals are on red alert.
The country is on red alert.
red alert in American English
1.
a warning of imminent danger
2.
a state or condition with such a warning in effect
Examples of 'red alert' in a sentence
red alert
At that moment, in the "red alert" country concerned, all might appear to be normal.
Geraghty, Tony The Bullet Catchers (1989)
POLICE were on red alert last night as thousands of students prepared to march on London's streets today to protest over tuition fee rises.