Cold Air Funnels
       Cold air funnels what are they and how do they form?
I will try to answer this the best I can,since so much is unclear about them.
       Cold air funnels form from high based small showers and thunderstorms  They tend to form after a cold front passage.They occure from late spring into early fall.Cold air funnels form when there is a cold air aloft.We need SFC heating along with mositure in the lower parts of the atmosphere. This will all be need to support showers and storms.
      Cold air funnels are shorted lived, they rarely touch down.If they do they are very weak,But can cause minor damage to trees and buildings.
      If you spot a cold air funnel you should take shelter immediately.
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