Tornadoes are violently rotating columns of air that extend from a thunderstorm to the ground. They can damage buildings, lift vehicles, break windows, and turn loose objects into dangerous debris. Knowing what to do before and during a tornado can greatly reduce injuries.
Preparedness matters because tornadoes can form quickly and leave only minutes to reach a safer place.
The safest shelter is usually a basement, storm shelter, or small interior room on the lowest floor of a sturdy building. The goal is to put as many walls as possible between you and the outside while staying away from windows and large open rooms. Weather alerts, emergency kits, and practiced drills help people act quickly instead of panicking.
Tornado safety connects earth science, engineering, and health because it uses knowledge of severe weather to protect human life.
Key Facts
- A tornado watch means conditions are favorable for tornadoes, while a tornado warning means a tornado has been seen or detected by radar.
- Go to a basement, storm shelter, or small interior room on the lowest floor when a tornado warning is issued.
- Stay away from windows because broken glass and wind-driven debris can cause serious injuries.
- Speed can be calculated with v = d/t, where v is speed, d is distance, and t is time.
- Warning lead time can be estimated with t = d/v when a storm distance and speed are known.
- Protect your head and neck with your arms, a helmet, a heavy coat, or a backpack if sheltering during a tornado.
Vocabulary
- Tornado
- A tornado is a violently rotating column of air that reaches from a thunderstorm cloud to the ground.
- Tornado Watch
- A tornado watch means the weather conditions could produce tornadoes in the area.
- Tornado Warning
- A tornado warning means a tornado has been spotted or indicated by radar and people should take shelter immediately.
- Safe Shelter
- A safe shelter is a protected place such as a basement, storm shelter, or interior room on the lowest floor away from windows.
- Debris
- Debris is loose material such as glass, branches, signs, or building parts that can be carried by strong winds.
Common Mistakes to Avoid
- Waiting to see the tornado before taking shelter is dangerous because tornadoes can move fast and may be hidden by rain, darkness, or buildings.
- Standing near windows to watch the storm is unsafe because glass can shatter and debris can be blown indoors.
- Sheltering in a gym, cafeteria, or auditorium is risky because large open rooms often have wide roofs that are more vulnerable to strong winds.
- Trying to outrun a tornado in a car is unsafe because traffic, debris, and changing storm paths can trap you in a more dangerous location.
Practice Questions
- 1 A storm is 18 km away and moving toward your town at 60 km/h. Using t = d/v, how many minutes do you have before it reaches the town if it keeps the same speed?
- 2 A school tornado drill starts at 10:15 a.m. and all students reach the shelter area at 10:19 a.m. What was the evacuation time in minutes, and why is reducing this time important?
- 3 A student is in a classroom with windows during a tornado warning. Explain why moving to a small interior room on the lowest floor is safer than staying in the classroom.