What could indicate that a tornado is happening?
light drizzle
sunny skies, cool weather
dark storm clouds
high winds, hail and debris falling
overcast skies
1 answer
The dark storm clouds, high winds, hail and debris falling, and overcast skies could all indicate that a tornado is happening. Additionally, a distinctive funnel-shaped cloud extending from the base of the storm cloud towards the ground is a clear visual indication of a tornado.