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[edit] Summary
A map of the frequency of F3 and greater intensity tornadoes by area. The darker colors highlight the area typically known as Tornado Alley.
Source: Image from a booklet from Federal Emergency Management Agency, a United States government agency, titled Taking Shelter from the Storm: Building a Safe Room Inside your House, FEMA 320, Figure 1.1, page 3, and thought to be in the public domain.
Area: 700x522 pix
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Historique du fichier
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| Date et heure | Dimensions | Utilisateur | Commentaire |
actuel | 4 février 2007 à 19:13 | 550×406 (67 Kio) | TCY | |
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