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Any thunderstorm which produces hail that reaches the ground is known as a hailstorm. [5] An ice crystal with a diameter of >5 mm (0.20 in) is considered a hailstone . [ 4 ] Hailstones can grow to 15 cm (6 in) and weigh more than 0.5 kg (1.1 lb).
A severe weather outbreak is typically considered to be when ten or more tornadoes, some of which will likely be long-tracked and violent, and many large hail or damaging wind reports occur within one or more consecutive days. Severity is also dependent on the size of the geographic area affected, whether it covers hundreds or thousands of ...
Severe weather can occur under a variety of situations, but three characteristics are generally needed: a temperature or moisture boundary, moisture, and (in the event of severe, precipitation-based events) instability in the atmosphere.
A storm seen at the Baltic Sea near the island of Öland, Sweden.. A storm is any disturbed state of the natural environment or the atmosphere of an astronomical body. [citation needed] It may be marked by significant disruptions to normal conditions such as strong wind, tornadoes, hail, thunder and lightning (a thunderstorm), heavy precipitation (snowstorm, rainstorm), heavy freezing rain ...
Quarter-sized hail piled up several inches deep and stripped leaves from the trees, changing the landscape into what looked like a winter wonderland. A hai Summer turns to winter: Hailstorm drops ...
Hailstorm over Truk Lagoon is a book by Klaus Lindemann about the shipwrecks of Truk lagoon. The wrecks were caused by Operation Hailstone , a US Navy aerial attack on the Japanese -held islands of the lagoon on 17 and 18 February 1944.
Hail: hailstones may fall from this cloud if it is a highly unstable environment (which favours a more vigorous storm updraft). Heavy rain: this cloud may drop several inches (centimetres) of rain in a short amount of time. This can cause flash flooding. Strong wind: gale-force winds from a downburst may occur under this cloud.
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