Officials in Calhoun County are investigating issues with their severe weather warning systems after sirens failed to sound during a recent tornado warning. In a post to social media, the Calhoun County Emergency Management Agency says sirens failed to activate during a tornado warning at 10:26 p.m. on Monday evening. The agency’s system is designed to automatically trigger sirens in the event of a tornado, 80 mph winds, or large hail. Despite the system being operational and connected to both primary and backup internet sources, none of the sirens were activated. Technicians have verified that all settings were correct and are now consulting with the siren manufacturer to diagnose the issue further. Warning sirens are meant for individuals outside buildings, and it is recommended multiple alert methods should be used, including signing up for notifications through Alert Iowa, local news apps, radio, television, and weather radios.