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The series consists of recordings of natural sounds such as a seashore with crashing waves or a thunderstorm with falling rain, without musical accompaniment. The series helped ignite a worldwide interest in field recordings which resulted in many imitations being released throughout the 1970s, 1980s and 1990s both with, and without, music.
From 1960s to 1980s, a worldwide effort was made to measure the atmospheric noise and variations. Results have been documented in CCIR Report 322. [1] [7] CCIR 322 provided seasonal world maps showing the expected values of the atmospheric noise figure F a at 1 MHz during four hour blocks of the day.
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]
The winter storm could impact up to 170 million people across more than 20 states from the southern Plains to the Midwest and East, AccuWeather said. Fox Weather 3 hours ago
Thunder is the sound caused by and after 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 ]
Videos of eerie noises erupting from the skies have recently surfaced on YouTube, sending people into a panic around the world. The video above shows a particularly frightening episode of this ...
In Canada, a severe thunderstorm is defined as having wind gusts of greater than 90 km/h (56 mph), hail with a diameter of greater than two centimetres (0.79 in), rainfall rates of greater than 50 millimetres (2.0 in) in one hour or greater than 75 millimetres (3.0 in) in three hours, or tornadoes. [14]
At least 30% of all tornadoes touched down at night for 13 states from Oklahoma to West Virginia from 1950 to 2019, according to the study. The peak state was 46% in Tennessee.
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