Tornadoes are common in the Midwest, and the St. Louis area is especially vulnerable. These violently rotating columns of air can reach speeds over 200 mph, carving paths more than a mile wide and several miles long. Even with improved warning systems, it’s critical to know how to respond immediately when a tornado warning is issued.

How to Prepare Before a Tornado Happens

Know the Difference Between Watches and Warnings
  • Tornado Watch – Conditions are favorable for tornadoes to form. Stay alert and be ready to act.
  • Tornado Warning – A tornado has been spotted or indicated by radar. Take shelter immediately in your Severe Weather Refuge Area (SWRA).
  • Destructive Thunderstorm Warning – A severe storm is expected to produce winds over 80 mph and/or baseball-sized hail. Treat like a tornado warning and shelter in your SWRA.
Know Your Severe Weather Refuge Area (SWRA)

A SWRA is a designated safe location inside a building that offers the greatest protection during severe weather events such as tornadoes or destructive winds.
Why it’s important to know your SWRA:

  • Provides maximum protection from wind, flying debris, and structural damage.
  • Saves critical seconds—you can get to safety immediately when a warning is issued.

📍 Tip: Building maps, posted near exits and elevator lobbies, show SWRA locations.

Understand What Outdoor Warning Sirens Mean

Outdoor sirens are designed to alert people outside—not inside buildings.

  • Activated during tornado warnings or destructive thunderstorm warnings in St. Louis City or County.
  • May not indicate a direct threat to WashU, but you should check alerts and be ready to act.
Get Alerts from Multiple Sources

📍Tip: Use Wi-Fi for Reliable Alerts –The WashU Safe app can be especially helpful in buildings with strong Wi-Fi but limited cellular service. If a text message is delayed, the app ensures you still receive important emergency notifications right away.

What To Do When It Happens

  • Go to your designated Severe Weather Refuge Area immediately.
  • Do not use elevators. Use stairs if needed.
  • Stay sheltered until the warning expires and an all-clear is given by emergency officials.

What To Do Right After It Happens

  • Check for injuries and provide first aid if trained to do so.
  • Report hazards or damage to campus security by calling WUPD 314-935-5555 or Protective Services 314-362-4357.
  • Exit the building when it is safe and appropriate.
  • Follow instructions from emergency personnel and stay informed through the WashU Safe App or official university communications.