AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/aero-tornado-ground-contact

When does a funnel cloud become a tornado?

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

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References

  1. National Weather Service: An Introduction to Storm Observation and Reporting www.weather.gov/oun/stormspotting Checked 2026-10-10.

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