NDMA will conduct a nationwide Cell Broadcast Alert System test on May 2, with citizens in major cities likely to receive emergency test notifications on their phones.

The monthly test of the all-hazard Statewide Outdoor Warning Siren System is scheduled for Friday, May 1, 2026, at 11:45 a.m.

The monthly test of the Statewide Outdoor Warning Siren System is scheduled for 11:45 a.m. Friday, May 1. File Photo. The ...

Add Yahoo as a preferred source to see more of our stories on Google. DENVER (KDVR) — On Wednesday at 11 a.m., you might’ve heard sirens throughout Denver — but it was nothing to be alarmed about. The ...