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Noun1.supertwister - the most powerful tornado which can create enormously devastating damage; "supertwisters are fortunately rare"
tornado, twister - a localized and violently destructive windstorm occurring over land characterized by a funnel-shaped cloud extending toward the ground
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The image presented here is from her visualization of an F3 Tornado Storm Chaser Perspective, which was produced for the 2004 high-definition PBS NOVA television program "Hunt for the Supertwister.