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They arrive at their work hours later than they should, and are threatened with termination. They resolve to sleep earlier than usual at night, in hopes of being able to wake up early on the next morning. But they are kept awake by animal noises, the brightness of the moonlight, and the effects of a thunderstorm on their house.
A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning [1] and its acoustic effect on the Earth's atmosphere, known as thunder. [2] Relatively weak thunderstorms are sometimes called thundershowers. [3] Thunderstorms occur in a type of cloud known as a cumulonimbus. [4]
Thunder is the sound caused by lightning. [ 1 ] [ 2 ] [ 3 ] Depending upon the distance from and nature of the lightning, it can range from a long, low rumble to a sudden, loud crack. The sudden increase in temperature and hence pressure caused by the lightning produces rapid expansion of the air in the path of a lightning bolt . [ 4 ]
The sum of all these lightning flashes results in atmospheric noise. It can be easily heard with any AM radio or SSB receiver tuned to an unused frequency. [4] The heard static is a combination of white noise (cumulative of distant thunderstorms) and impulse noise (from relatively nearby thunderstorms, if any). The power-sum varies with seasons ...
A dry thunderstorm is a thunderstorm that produces thunder and lightning, but where all or most of its precipitation evaporates before reaching the ground. [1] Dry lightning refers to lightning strikes occurring in this situation.
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Date/Time Thumbnail Dimensions User Comment; current: 02:26, 2 May 2010: 9 min 44 s, 720 × 480 (25.05 MB): BenFranske {{Information |Description={{en|1=Video of Federal Signal Thunderbeam Warning / Civil Defense Siren Test in "Alert" mode for Severe Weather Awareness Week.
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