severe weather Flashcards

(39 cards)

1
Q

radar

A

device that transmits radio waves in the form of a beam

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2
Q

watch

A

tornado not formed

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3
Q

warning

A

tornado formed

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4
Q

which state has the most thunderstorms and why

A

florida because of their humidity

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5
Q

air mass thunderstorms

A

warm, moist air mass, occur in spring and summer, last an hour, single widely scattered

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6
Q

frontal thunderstorm

A

occur in lines along a frontal surface, strong, lasts several hours, heavy rain and flooding

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7
Q

lightning

A

abrupt high current electric charge that occurs in the atmosphere

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8
Q

thunderstorms

A

cumulonimbus, heavy rainfall,occasional hail

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9
Q

what do all thunderstorms require

A

warm moist air, instability(low pressure) warm surface temp,

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10
Q

when do most thunderstorms occur

A

afternoon, evening

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11
Q

development of thunderstorms

A

cumulus, mature, dissipatin

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12
Q

cloud to cloud lightning

A

75-90% of light occurs in cloud to cloud

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13
Q

cloud to ground

A

10-25% of light occurs in cloud to ground

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14
Q

lightning bolt temp

A

54,000 degrees

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15
Q

how fast does lightning travel

A

60,000 mi per sec

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16
Q

how many thunderstorms at any given time

17
Q

how much lightning per sec

18
Q

supercells

A

huge, single cell thunderstorm with strong updrafts, tornado is violent, whirling column of air in contact with ground

19
Q

fujita tornado intensity scale

A

classifies tornado by wind speed, duration, and path of destruction

20
Q

hurricane wind speed

A

74 mi per hour

21
Q

what temp do hurricanes form

22
Q

what is the strongest part of the hurricane

23
Q

the eye is

24
Q

more defined eye

A

stronger hurricane

25
hurricanes have what pressure
low
26
tropical depression
winds up to 38 mph
27
tropical storm
winds up to 38-74 mph
28
when is hurricane given a name
at the tropical storm phase
29
how does a hurricane lose intensity
jet streams, cooler ocean, when it hits land
30
saffir-simpson scale
scale used to rate intensity of hurricane
31
storm surge
a rapid rise of the water level along coast as hurricane or tropical storm
32
where does a storm surge occur
northern side of the storm
33
blizzards
wind greater than 56 km per hr, temp -7 C, visibilty, .25 mi or less
34
why is the blizzards visibility so low
because of falling or blowing snow
35
how do meteorologists interpret weather info
satellites, commercial aircraft, weather ballons
36
hurricane phases
tropical depression, tropical storm, hurricane
37
tornado
360-500 km per hr, funnel less than 500 m across always comes with a thunderstorm, speed of 40-65 km per hr
38
tornado over water
water spout
39
the wider the tornado
the more destructive the tornado