Did you hear the tornado sirens today? Today was a scheduled test of the alert systems. NOAA completed their alert system test around 8:00 AM, and Pine County tested the tornado siren system at 1:00 PM to make sure everything is working properly. These tests are conducted every first month to confirm the system is ready when needed. Here is how they sound depending on how the sirens are activated. The tone and length can change based on whether they are triggered manually, automatically, or thro