Denver will do the annual test of its emergency siren network Wednesday at 11 a.m.
The city has 86 sirens installed around the city, which it would use in case of extreme emergencies like tornadoes, flash floods, terrorism or civil unrest.
You don’t have to do anything during Wednesday’s test.
During a real emergency, the sirens will sound continuously for three minutes at a time. It may be repeated multiple times depending on the emergency. People should take immediate shelter indoors.
Once inside, the city advises tuning into local media via TV, radio, mobile devices or whatever is available. Further alerts may advise evacuating or avoiding certain areas.













