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Any thunderstorm which produces hail that reaches the ground is known as a hailstorm. [7] 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). [8] Unlike ice pellets, hailstones are often layered [9] and can be irregular and clumped together.
Grape-golf-ball sized hail and more than 150 millimetres (5.9 in) of rain in fell in 30 minutes, leaving 6 centimetres (2.4 in) deep of hail on the ground and flash flooding, it is estimated to be a 1-in-200 year event.
On July 28, 2013, an exceptionally long-lived supercell tracked along an almost 400 km long path across parts of Baden-Württemberg and Bavaria in southern Germany, before falling apart in Czechia. The storm had a lifespan of around 7 hours and produced large hail of up to 8 cm in diameter.
Before hailstones become too heavy to fall to the ground, the updraft pushes them up repeatedly, freezing more ice around them. ... The top six days with the most large hail reports since 2006 ...
Hail is one of the most significant thunderstorm hazards to aircraft. When hail stones exceed 13 millimetres (0.5 in) in diameter, planes can be seriously damaged within seconds. [68] The hailstones accumulating on the ground can also be hazardous to landing aircraft. Wheat, corn, soybeans, and tobacco are the most sensitive crops to hail ...
Smaller hail is projected to decrease because it’s more likely to melt in the warmer air as it nears the surface, he said, while larger hail, falling at a faster velocity, will be less affected.
Footage from inside the store shows panicked customers dodging falling hail, ducking for cover, and shouting to each other "Tranquilo que estoy yo," meaning "Stay calm, I'm here."
Numerous hailstones accumulated on the ground following a hailstorm hailstorm Any storm, usually a strong thunderstorm, which precipitates hail. Haines Index. Also Lower Atmosphere Severity Index. A weather index that measures the potential for dry, unstable air to contribute to the development of large or erratic wildland fires.