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Emergency Storm Warning System

Storm Warning Sirens

What should I do when I hear the sirens?
  • When you hear severe storm sirens, go inside and tune to local media to get more information.
Why can’t I hear the sirens in my house?
  • Sirens are an outdoor warning system designed only to alert those who are outside that something dangerous is approaching.
How can I get alerts when I’m at work or in my house?
  • For alerts indoors, every home and business should have a NOAA Weather Radio All-Hazards. NOAA Weather Radio is like a smoke detector for severe weather, and it can wake you up when a warning is issued for your area so you can take appropriate action.
When are sirens tested?
  • Sirens are tested monthly on the 3rd Monday of every month at 10:00 am.
Will the sirens warn me of every dangerous storm?
  • Herculaneum has an Early Warning Storm System. The system has two recorded voice messages and warnings.

    Warning system signals:

    Constant wail - Tornado Warning
    Hear an example of the Tornado Warning Siren

    Intermittent Blasts - Severe Storm Warning
    Hear an example of the Severe Storm Warning Siren

  • All storm warnings and tests are accompanied by loudspeaker voice announcements.

  • The safest approach is to be proactive and use all of the information available to protect yourself and your family from threatening weather. Nothing can replace common sense. If a storm is approaching, the lightning alone is a threat. Sirens are only one part of a warning system that includes preparation, NOAA Weather Radio, and local media.
Who activates the sirens?
  • Sirens are activated by city officials through the Pevely police department.

Missouri launches Web site to help Missourians be prepared
for tornadoes and severe storms

Missouri StormAware Web site includes videos on sheltering and storm warning systems; also includes links to severe weather texting services to alert Missourians to severe weather in their area