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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 ]
Thundersnow can occur during a normal snowstorm that sustains strong vertical mixing which allows for favorable conditions for lightning and thunder to occur. It can also occur from the lake effect or ocean effect thunderstorm which is produced by cold air passing over relatively warm water; this effect commonly produces snow squalls over the ...
Many thunderstorms move with the mean wind speed through the Earth's troposphere, the lowest 8 kilometres (5.0 mi) of the Earth's atmosphere. Weaker thunderstorms are steered by winds closer to the Earth's surface than stronger thunderstorms, as the weaker thunderstorms are not as tall.
There’s an old wives’ tale: If it thunders in the winter, it’ll snow in the next week. Well, we’re hearing thunder ...
The ancient Etruscans produced guides to divining the future based on the omens supposedly displayed by thunder or lightning. [182] [183] Such use of thunder and lightning in divination is also known as ceraunoscopy, [184] a kind of aeromancy. In the traditional religion of the African Bantu tribes, lightning is a sign of the ire of the gods.
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]
Set your alarm clocks! This weekend, a celestial treat will sweep across the continental United States.
The thunderbird creates not just thunder (with its wing-flapping) but lightning bolts, which it casts at the underworld creatures. [ 2 ] Thunderbird in this tradition may be depicted as a spreadeagled bird (wings horizontal head in profile ), but also quite common with the head facing forward, thus presenting an X-shaped appearance overall [ 6 ...