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Saturday, August 2, 2008

Rare picture of Four (4) Tornadoes (or funnel clouds) at the same time almost touching down!!


This rare picture was taken on July 2008 in Halliday, North Dakota when about 4 funnel clouds almost touched down.
You're probably wondering what's a funnel cloud.
Funnel cloud is a cloud of condensed water droplets, associated with a rotating column of air and extending from the base of a cloud (usually a cumulonimbus or towering cumulus cloud) but not reaching the ground or a water surface. A funnel cloud is usually visible as a cone-shaped or needle like protuberance from the main cloud base. Funnel clouds frequently form in association with supercell thunderstorms.
If a funnel cloud touches the ground it becomes a tornado. Most tornadoes begin as funnel clouds, but many funnel clouds do not make ground contact and so do not become tornadoes. Also, a tornado does not necessarily need to have an associated condensation funnel—if strong cyclonic winds are occurring at the surface, then the feature is a tornado. Some tornadoes may appear only as a debris swirl, with no obvious funnel cloud extending below the rotating cloud base.
A funnel cloud that touches down on, or moves over water is a waterspout. can be considered weak tornadoes that do not have a visible portion reaching the ground.
But more commonly, the tornadic circulation is too weak to support a well developed condensation funnel. Nevertheless, in virtually all true funnel cloud situations, there will be a circulation of air reaching from the visible funnel all the way to the ground. Low clouds associated with thunderstorms are often mistaken for funnel clouds
Source: Wikipedia.org

1 comments:

TMI said...

Well that's a first!! I've never seen something like that before!

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