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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).
Any thunderstorm that produces hail that reaches the ground is known as a hailstorm. [61] Thunderclouds that are capable of producing hailstones are often seen obtaining green coloration. Hail is more common along mountain ranges because mountains force horizontal winds upwards (known as orographic lifting ), thereby intensifying the updrafts ...
Severe is defined as hail 1 to 2 inches (25 to 51 mm) diameter, winds 58 to 75 miles per hour (93 to 121 km/h), or a tornado. [11] Significant severe is defined as hail 2 inches (51 mm) in diameter or larger, winds 75 mph (65 knots, 120 km/h) or more, or a tornado of strength EF2 or stronger. [1] [12]
Hail shaft Severe thunderstorms containing hail can exhibit a characteristic green coloration. [13] Like other precipitation in cumulonimbus clouds hail begins as water droplets. As the droplets rise and the temperature goes below freezing, they become supercooled water and will freeze on contact with condensation nuclei. A cross-section ...
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.
Updrafts reform new cells continually at the leading edge of system with rain and hail following behind. Individual thunderstorm updrafts and downdrafts along the line can become strong, producing large hail and strong outflow of straight-line winds ahead of system. Tornadoes are only occasionally reported. [2]
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