SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/aero-tornado-ground-contact

When does a funnel cloud become a tornado?

When its rotating circulation reaches the ground.

Start playing free

  1. When it touches the ground ✔
  2. When hail begins
  3. When it starts to spin

Why: A rotating funnel still above the surface is a funnel cloud. It is called a tornado when the rotating column makes contact with the ground.

Huh, didn't know that: A tornado can touch down, lift back into the cloud, and touch down again many times.

The dad joke
The funnel cloud checked in when it finally touched base.
Like this card?
Play the game

References

Answer: When it touches the ground. A rotating funnel still above the surface is a funnel cloud. It is called a tornado when the rotating column makes contact with the ground.

  1. National Weather Service: An Introduction to Storm Observation and Reporting www.weather.gov/oun/stormspotting
    A violently rotating column of air in contact with the ground and extending from the base of a thunderstorm.
    Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Flying & DronesWhat is the best tornado shelter choice at home?Flying & DronesWhat is fog?Flying & DronesWhich conditions make fog most likely?

That's stuff everyone should know.