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Hail in the tropics occurs mainly at higher elevations. [22] Hail growth becomes vanishingly small when air temperatures fall below −30 °C (−22 °F), as supercooled water droplets become rare at these temperatures. [21] Around thunderstorms, hail is most likely within the cloud at elevations above 20,000 ft (6,100 m).
The VIL measurement is usually used in determining the size of prospective hail, [3] the potential amount of rain under a thunderstorm, and the potential downdraft strength when combined with the height of the echo tops. [citation needed] VIL can be used to triage storms based on their severe potential. It is sometimes still used to assess ...
The scale of dBZ values can be seen along the bottom of the image. dBZ is a logarithmic dimensionless technical unit used in radar.It is mostly used in weather radar, to compare the equivalent reflectivity factor (Z) of a remote object (in mm 6 per m 3) to the return of a droplet of rain with a diameter of 1 mm (1 mm 6 per m 3). [1]
GR is derived from the French word grêle. Smaller-sized hail, as well as snow pellets, use the coding of GS, which is short for the French word grésil. [35] Stones just larger than golf ball-sized are one of the most frequently reported hail sizes. [39] Hailstones can grow to 15 centimetres (6 in) and weigh more than 500 grams (1 lb). [40]
Much of the metro area saw hail ranging from a quarter (about 1 inch in diameter) to a golf ball (about 1 3/4 inches). A few people reported hail the size of limes or medium-sized hen eggs (2 ...
It started with a report of baseball-size hail in far west Fort Worth. Fifteen minutes later, about 7:15 on the evening of May 5, 1995, thousands of revelers at the annual Mayfest family festival ...
The National Weather Service in Topeka said quarter-size hail and wind gusts up to 60 mph (96 kph) were expected across northern Kansas overnight until 6 a.m. on Thursda Storm carrying massive ...
Over 20,000 People were evacuated from West Edmonton Mall when the weight from the hail and rain caused the glass roofs to shatter. [16] 20–21 April 2006 San Marcos, Texas, US Hail of sizes up to 10 cm (3.9 in) [17] [18] results in 10,000 auto claims, 7,000 homeowner and commercial property claims ranging between $100–160 million insured ...