Outdoor warning sirens are simply tools to warn people who are outdoorsto 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.