The Linn County outdoor warning siren system is tested monthly, with the test taking place on the first Wednesday of the month at 8:45 a.m. The test consists of a computer-generated voice announcement ...

Twice this week, tornado sirens incorrectly went off in Winnebago County. The first false alarm was on Saturday, and the ...

First installed in the 1950s, they were developed for Cold War air raid warnings, but in the 1970s, the sirens transitioned to outdoor warning alerts.