As you may have heard, Boulder County’s most recent emergency warning systems test was Monday evening. Boulder’s flood season stretches from April through August, and that means the emergency warning systems need to be tested regularly. Flash floods are no joke, but neither are the 30+ sirens of Boulder County’s outdoor warning system. Following World War II most cities and towns in the United States incorporated siren alarm systems for civil defense. These were originally intended to warn civilians of impending air raids, hence the colloquial term “air raid sirens”.... Read More