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chap13

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Air rises because of unequal heating of Earth's surface within a single air mass and is most common during the afternoon and evening. Air-mass thunderstorm
Occur when an air mass rises by orographic lifting, which involves air moving up the side of a mountain. Mountain thunderstorm
Local air-masses thunderstorms that occur because land and water store and release thermal energy differently. Sea-breeze thunderstorm
Produced by advancing cold fronts and, more rarely, warm fronts. Frontal thunderstorm
The channel of partially charged air. Stepped leader
A branched channel of positively charged particles. Return stroke
Can developed into self-sustaining, extremely powerful storms. Supercell
Violent downdrafts that are concentrated in a local area. Downburst
A violent, whirling column of air in contact with the ground. Tornado
Which ranks tornadoes according to their path of destruction, wind speed, and duration. Fujita tornado intensity scale
The tropics experience conditions ideal for the formation of large, rotating, low-pressure tropical storms. Tropical cyclone
Calm center of a tropical cyclone that develops when the winds around its center reach at least 120 km/h. Eye
Band where the strongest winds in a hurricane are usually concentrated, surrounding the eye. Eyewall
Classifies hurricanes according to wind speed, potential for flooding in terms of the effect on the height of sea level, and potential for property damage. Saffir-Simpson hurricane scale
Occurs when hurricane-force winds drive a mound of ocean water toward coastal areas where it washes over the land. Storm surge
Extended periods of well-below-average rainfall. Drought
Extended periods of above-average temperature. Heat wave
An extended period of below-average temperatures. Cold wave
Measures the windchill factor, by estimating the loss from human skin caused by a combination of wind and cold air. Windchill index
Created by: jesse14
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