Weather Glossary
- Funnel cloud
A funnel cloud is the preliminary stage of a tornado. At this point the funnel does not touch the ground. All tornadoes begin as funnel clouds, but not all funnel clouds become tornadoes.
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A funnel cloud is the preliminary stage of a tornado. At this point the funnel does not touch the ground. All tornadoes begin as funnel clouds, but not all funnel clouds become tornadoes.