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29 Cards in this Set
- Front
- Back
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Types of Cyclonic storms
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1. Mid-latitude
2.Hurricane 3. Tornadoes |
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Types of Thunderstorms
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1 Air-mass
2. severe |
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Stages in Development of Air-mass thunderstorm
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1. Cumulus
2. Mature 3. Dissipating |
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Factors influencing flash flooding
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1. Rainfall intensity
2.Rainfall Duration 3. surface conditions 4.Topography |
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Parts of lightning stroke
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Flash, Stroke, Leader, Step leader, Return Stroke, Dart Leader
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Stages in development of Tornado
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Sever weather, supercell thunderstorm,Mesocyclone, Strong updrafts, Wall cloud develops, Funnel cloud, Tornado forms when funnel touches the ground
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Contrasting air masses associated with midlatitude cyclones&Tornado development
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Maritime tropical-warm, wet, unstable
Continental Polar- Cold and Dry |
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Profile of a Tornado
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Diameter, Foreword speed, ground covered, wind speed, direction of movement
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Profile of small tornado
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Diameter, Ground covered, wind speed, time on ground
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Profile of Violent Tornado
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Diameter, Ground Covered, Wind speed, Time on ground (3+ hours)
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Mid Latitude Cyclone
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Large, wavelike low pressure system, is primarily wether producer of midlatitudes, traveling from east to west.
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Thunderstorm
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Storm produced by cumulonimbus clouds, with lightening and thunder
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Air-Mass thunderstorm
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Localized thunderstorm forming in warm, moist air
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severe Thunderstorm
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Produced frequent lightning, damaging wind, hail etc.
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Entrainment
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Influx surrounding air into a vertical moving column of air
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Wind Shear
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Change in wind speed or direction between different heights
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Overshooting
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Updrafts push into lower stratosphere
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Gust Front
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Boundary separating cold downdraft from a thunderstorm and warm, moist surface air.
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Super Cell
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Thunderstorm with a single, persistant cell producing severe weather
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Mesocyclone
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Vertical cyclinder of cyclonical rotating air
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Squall line
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None frontal or band of activr thunderstorms
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Dryline
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Front long which there is a change in moisture and density between the air masses
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Mesoscale conceptive complexes MCC
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slow moving roughly circular cluster of interactive thunderstorms
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Flash Flood
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Local floods of great volume and short duration
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Microburst
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Small straight line downburst occuring beneath a thunderstorm (planes)
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Lightning
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Sudden flash of light generated by electrically charged clouds
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Thunder
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Sound emitted by rapidly expanding air alonf the channel of lightening stroke
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Heat lightning
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Lightning occurring about 12+ miles away
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Tornando
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Violent rotating column of air, attended bya funnel shape cloud
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