Tornado
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 A tornado near Anadarko, Oklahoma. The funnel is the thin tube reaching from the cloud to the ground. The lower part of this tornado is surrounded by a translucent dust cloud, kicked up by the tornado's strong winds at the surface. The wind of the tornado has a much wider radius than the funnel itself. |
A tornado is a violently rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. They are often referred to as twisters or cyclones, although the word cyclone is used in meteorology, in a wider sense, to name any closed low pressure circulation. Tornadoes come in many shapes and sizes, but they are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris and dust. Most tornadoes have wind speeds less than , are about across, and travel a few miles (several kilometers) before dissipating. The most extreme tornadoes can attain wind speeds of more than , stretch more than across, and stay on the ground for dozens of miles (more than 100 km).
- See also: Wikipedia
- Related: Derecho, Secondary flow, Skipping tornado, Tornado drill, Whirlwind
| NOAA Storm Database 1950–Present NOAA Storm Database 1950–Present www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwEvent~Storms - Web |
| European Severe Weather Database European Severe Weather Database www.essl.org/ESWD - Web |
| Social & Economic Costs of Tornadoes Social & Economic Costs of Tornadoes www.economics.noaa.gov/?goal=weather&file=events/tornado/ - Web |
Gallery for «Tornado»
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| Tornado Detection and Warnings Tornado Detection and Warnings celebrating200years.noaa.gov/.../welcome.html - Web |
| Electronic Journal of Severe Storms Meteorology Electronic Journal of Severe Storms Meteorology www.ejssm.org - Web |
| NOAA Tornado Preparedness Guide NOAA Tornado Preparedness Guide www.nssl.noaa.gov/edu/safety/tornadoguide.html - Web |
| Tornado History Project - Maps and statistics from... Tornado History Project - Maps and statistics from 1950-Present www.tornadohistoryproject.com - Web |
