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33 Cards in this Set
- Front
- Back
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a severe localized downdraft that can be experienced beneath a severe thunderstorm
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downburst
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the discharge of electrons that proceeds intermittently toward the ground along the same ionized channel taken by the initial lightning stroke
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dart leader
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a ____________ is a radar that determines the velocity of falling precipitation either toward or away from the radar unit by taking into account the doppler shirt
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doppler radar
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_____ is a region in the center of a hurricane (or tropical storm) where the winds are light and skies are clear to partly cloudy
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eye
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A tropical cyclone that has winds in excess of 64 knots or 74 mph
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hurricane
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a scale developed for classifying tornadoes according to the damage they cause and their rotational wind speed.
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Fujita scale
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a boundary that separates a cold downdraft of a thunderstorm from warm, humid surface air.
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gust front
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________ is caused by winds of a storm, especially a hurricane.
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storm surge
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A wall of dense thunderstorms that surrounds the eye of a hurricane is a __________.
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eyewall
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a visible electrical discharge produced by thunderstorms
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lightning
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this storm ALWAYS is accompanied by lighning and thunder
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thunderstorms
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a downburst less than 4 km across is a _________.
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microburst
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an abnormal rise of the sea along a shore
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storm surge
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on the surface _________ passage resembles that of a cold front.
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gust front
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intense thunderstorms capable of producing heavy showers, flash floods, hail, strong and gusty surface winds, and tornadoes
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severe thunderstorms
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an initial discharge of electrons that proceeds intermittently toward the ground in a series of steps in a cloud-to-ground lightning stroke
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stepped leader
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a scale relating a hurricane's central pressure and winds to the possible damage it is capable of inflicting
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saffir-simpson scale
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a local storm produced by cumulonimbus clouds.
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thunderstorm
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a strong downdrafe grater than 4 km wide that can occur beneath thunderstorms.
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macroburst
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_______ is the sound due to rapidly expanding gases along the channel of a lightning discharge.
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thunder
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a mass of thunderstorms and clouds generally with a cyclonic wind circulation of between 20 and 34 knots
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tropical depression
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an organized mass of thunderstorms with a slight cyclonic wind circulation of less than 20 knots
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tropical disturbance
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organied thunderstorms with a cyclonic wind circulation between 35 and 64 knots
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tropical storm
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thunderstorms are __________ storms that form with _________ air.
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-convective
-rising |
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thunderstorms begin when _____, _____ air rises in a conditionally ________ environment.
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-warm
-moist -unstable |
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a warning issued when a tornado has actually been observed either visually or on a radar screen
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tornado warning
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a forecast issued to alert the public that tornadoes may develop within a specified area
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tornado watch
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the first stage of a thunderstorm is called the ________ stage.
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cumulus
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the second stage in a thunderstorm is the ________ stage.
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mature
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The third stage in a thunderstorm is called the ________ stage.
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dissipating
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the cumulus stage of a thunderstorm is also known as the ______ stage.
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growth
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What marks the beginning of the mature stage during a thunderstorm?
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the appearance of the downdraft
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_____________ stage occurs when the updrafts ________ as the gust front moves _____ from the storm and no longer enhances the updrafts
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-weaken
-away |
