Terrifying tornados

Question or Hint Answer or Word

A rotating cone-shaped column of air extending from the base of a thunderstorm, not touching the ground. Funnel Cloud
A tornado or intense vortex that forms over a body of water. Waterspout
A common, informal synonym for a tornado. Twister
A tornado that forms with its base on land while the thunderstorm cloud is still growing and there is no radar hook echo. Landspout
Device using radio waves to detect storms Radar
A safe place to go during a warning, like a basement Shelter
An advisory meaning a tornado has actually been spotted or tracked Warning