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thunderstorm
(redirected from Severe thunderstorm)

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thunderstorm

Severe storm of very heavy rain, thunder, and lightning. Thunderstorms are usually caused by the intense heating of the ground surface during summer. The warm air rises rapidly to form tall cumulonimbus clouds with a characteristic anvil-shaped top. Electrical charges accumulate in the clouds and are discharged to the ground as flashes of lightning. Air in the path of lightning becomes heated and expands rapidly, creating shock waves that are heard as a crash or rumble of thunder.

The rough distance between an observer and a lightning flash can be calculated by timing the number of seconds between the flash and the thunder. A gap of three seconds represents about a kilometre; five seconds represents about a mile.
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A severe thunderstorm knocked down trees around Richton.
Storm data and unusual weather phenomena by Storm Data
Thompson said meteorologists have been so busy tracking storms and putting out severe thunderstorm warnings they haven't had time to determine how many storms there have been since a severe late-evening thunderstorm June 10, with winds clocked at 68 mph at Worcester Regional Airport.
Mother Nature just won't quit; Severe weather hits over and over again by Telegram & Gazette (Worcester, MA)
A severe thunderstorm badly affected Banff and brought several call-outs for the emergency services.
LIGHTNING DID THIS TO MY LIVING ROOM; WEATHER WOES.. Nurse forced to ... by Daily Record (Glasgow, Scotland)
 
 
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