Criteria for Siren Activation
The Outdoor Warning Sirens in Cass and Clay Counties may be activated for any of the following conditions:
1. The National Weather Service has issued a tornado warning for any community dispatched by Red River Regional Dispatch Center.
2. A trained weather observer has observed a tornado in any community dispatched by Red River Regional Dispatch Center and requested activation of the sirens.
3. A trained Law Enforcement Officer has observed a tornado in the Cass or Clay County area and requested siren activation.
4. An on-scene Fire Department Incident Commander has requested activation of sirens to alert the public of a hazardous materials or other life-threatening incident.
5. The Cass or Clay County Emergency Manager has requested activation of the sirens.
6. Testing and Maintenance operations
If any of the sirens for the cities in the metro area (Moorhead, Dilworth, Fargo, Horace or West Fargo) are activated for severe weather or HAZMAT, all other metro area sirens will also be activated.
Monthly Siren Testing
The Outdoor Warning Siren System is tested at 13:00 hours (1PM) on the first Wednesday of each month.
When testing, sirens will sound for approximately one minute and should not repeat. In an actual emergency sirens are sounded for approximately 3 minutes and may repeat several times.