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Tornado Sirens

Video Transcript

This is a test of the local emergency warnings system.

I have just sent out a signal that has triggered the sirens.

And now they’re starting to report back.”

NARRATOR – Each month, Boone County and many other counties across Missouri test their tornado and severe weather outdoor warning systems. Boone County’s 80 sirens are positioned throughout the county to maximize coverage in populated areas. The sirens are activated at Columbia and Boone County Joint Communications.

ZIM SCHWARTZE – We don’t always have to wait for the National Weather Service to issue a tornado warning if we are getting reliable information about a tornado or a funnel cloud.

NARRATOR – The sirens are activated for tornadoes and potentially dangerous severe storms, but the purpose of the sirens is often misunderstood.

SCHWARTZE – We will often have calls from people who say I couldn’t hear that siren inside my home. I was washing dishes, I was running my vacuum cleaner, I couldn’t hear it. Why couldn’t I hear the siren? It’s not meant for those that are inside. It’s meant for folks who are outdoors.

NARRATOR – According to the National Weather Service, the sirens are an alert to observe conditions around you. If there is a visible, imminent weather threat…immediately take shelter in the safest structure available. If there is no sign of an imminent threat, go indoors and immediately get additional information about the storm from a local television station, weather radio or online.

NARRATOR – When a siren stops sounding, it does NOT mean that the potential weather threat has passed. Across Missouri, sirens are generally sounded for about three minutes, NOT until the threat ends, and again…the sirens are meant to alert those who are outdoors.

SCHWARTZE – And keep updated with the National Weather Service. That’s why we tell them to get a NOAA Radio and then they can make a determination when it is safe.

NARRATOR – Many areas of Missouri, particularly rural areas, do not have sirens. But in areas with sirens, it’s important to know what it means when they’re sounded, the actions to take in response, and to be aware of the sirens’ limited capabilities. It’s all part of being StormAware.

Stay Informed!

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Watches and Warnings

Tornado Watch means tornadoes are possible. Remain alert for approaching storms. Watch the sky and stay tuned to NOAA Weather Radio, commercial radio, or television for information.

Tornado Warning means a tornado has been sighted or indicated by weather radar. Take shelter immediately.

When a Tornado Strikes

It’s important to know how to stay safe if a tornado is in the area. Learn what to do if a tornado strikes while you are at home, in a mobile home or at school. Watch the videos.

Tornado Sirens

What should you do when you hear a tornado siren? When are tornado sirens sounded? Are you aware of the limitations of outdoor warning systems? Learn about tornado sirens.

Tornado History

Missouri accounts for six of the 30 deadliest tornadoes in United States history.

  • May 22, 2011 – Joplins
  • Sept. 29, 1927 – St. Louis
  • May 9, 1927 – Poplar Bluff
  • March 18, 1925 – Missouri, Illinois, Indiana
  • May 27, 1896 – St. Louis
  • April 18, 1880 – Marshfield

StormAware Partners

  • SEMA
  • NOAA
  • Department of Public Safety
  • National Weather Service
  • MO.gov - Official State of Missouri Website
  • Save a Life - Organ/Tissue Donation and Registry

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