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Tornado
Tornados are violently destructive columns of air that form over land in the shape of a funnel. They typically have wind speeds between 64-177 km/h and stretch over 75m across. Different types of tornados include supercell tornados, landspouts, firewhirls, gustnados, and waterspouts. Tornadoes form when warm moist air collides with cold dry air, creating a whirling wind that draws air into its center to form a funnel. Weather services issue tornado watches when conditions are right for tornadoes and tornado warnings when a tornado has been sighted on radar or visually. Tornados can cause significant damage and loss of life.
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Tornado
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- 7. Tornado Forecasting.Weather ServiceAlertsEffects of Tornados.What is a tornado?A localized and violently destructive column of air occurring over land, characterized by a funnel-shaped cloud extending toward the ground.
- 8. What is atornado?
- 9. CharacteristicsTornados come inmany shapes and sizes.
- 10. Typically in theform of funnel shape.
- 11. Most Tornados havewind speeds between (64km/h and 177km/h), and stretch more than 75m across.
- 12. They could travela few miles before dissipating.CharacteristicsA typical tornado travels at around 10-20 miles per hour.
- 13. Most tornadoes occurduring the months of May, June, July and August in the late afternoon and evenings.
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- 15. Tornado Alley Regionin US.
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Editor's Notes
- #8 Most tornadoes form from thunderstorms.It needs warm, moist air from one side and cool, dry air from an opposite side.When these two air masses meet, they create instability in the atmosphere.A change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere.
- #9 Most tornadoes form from thunderstorms.It needs warm, moist air from one side and cool, dry air from an opposite side.When these two air masses meet, they create instability in the atmosphere.A change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere.
- #10 Most tornadoes form from thunderstorms.It needs warm, moist air from one side and cool, dry air from an opposite side.When these two air masses meet, they create instability in the atmosphere.A change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere.
- #19 http://news.bbc.co.uk/nol/shared/spl/hi/sci_nat/06/tornado/swf/tornado_guide2416.swf