Outdoor Warning Sirens

Outdoor warning sirens are simply tools to warn people who are outdoors to take immediate, potentially life-saving action by finding shelter from an imminent deadly threat and get information on the threat by tuning into local media outlets, radio or weather stations.  

  • Sirens are not meant to warn or be heard by people who are already indoors.
  •  The siren system is tested on the first Wednesday of every month at 1:00 PM.
  •  For severe weather, Morrison County sirens are sounded for only tornado warnings in respective areas.
  • Sirens normally sound for 3-5 minutes and then go silent.  If they sound again that means there is a new danger such as a second tornado warning. 
  • Sirens are never sounded for an "all clear." You must listen to the radio or TV to find out if it is safe to be outside.