thunderstorms & tornadoes chapter 10
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Thunderstorms & Tornadoes Chapter 10. Meteorology 1010 Professor Bunds Utah Valley University. Thunderstorm Types. Air Mass Occur within mT air Uneven heating of the ground creates unstable air (therefore common in afternoon) - PowerPoint PPT PresentationTRANSCRIPT
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Thunderstorms & Tornadoes
Chapter 10
Meteorology 1010Professor Bunds
Utah Valley University
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Thunderstorm Types
• Air Mass– Occur within mT air– Uneven heating of the ground creates unstable
air (therefore common in afternoon)– Usually isolated storms & usually do not
produce strong winds, hail
• Severe– Involve uneven heating and lifting of warm air
by front or mountains– Usually occur in bands or groups– Can produce strong winds, hail, tornadoes
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Average Number of Days per Year with Thunderstorms
Lots of air mass Lots of air mass T-stormsT-storms
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Stages of Air Mass Thunderstorm Development
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Cumulus Clouds – potential initiation of air Cumulus Clouds – potential initiation of air mass T-stormsmass T-storms
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Developing Cumulonimbus
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Gust Front in Severe Thunderstorm
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Roll Cloud in Severe Thunderstorm
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Roll Cloud in Severe Thunderstorm
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Conditions for a Thunderstorm
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Dryline
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Squall Lineline of thunderstorms ahead of a cold front
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Lightning!
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Stages of a Lightning Strike
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Tornadoes!
Damage Path from a Tornado
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Supercell
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Supercell
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Development of a Tornado from a Mesocyclone
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Multi-Vortex
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Average Tornadoes per Year per 10,000 mi2 area
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Fujita Intensity Scale
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Fujita Intensity Scale
Number of Tornadoes-blue
Amount of Damage-red
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Paths of Tornadoes
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Tornado Forecasting
Watch-Conditions are Right
Warning-Tornado has been Spotted!
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Doppler Radar
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Doppler Effect
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Tornado OutbreakApril 14 – 16, 2011
• 62 Tornados Saturday Night Alone
• 200 in 3 Days
• Multiple vortex systems
• www.Tornadovideos.net
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Greensboro, N.C.
Charleston S.C.
Morehead, N.C.
Locations of Soundings in Following Slides
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Morehead North Carolina 04/17/2011 00 UTC
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Charleston South Carolina 04/17/2011 00 UTC
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Greensboro Carolina 04/17/2011 00 UTC