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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 ...
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 ...
The scale of dBZ values can be seen along the bottom of the image. Decibel relative to Z, or 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]
Hail is a form of solid precipitation. [1] It is distinct from ice pellets (American English "sleet"), though the two are often confused. [2] It consists of balls or irregular lumps of ice, each of which is called a hailstone. [3]
Unlike hail or sleet, graupel is soft and can be crushed easily in your hand, and is sometimes called "soft hail." It is also usually smaller than hail, with a diameter of around 0.08-0.2 inches.
A slight risk day typically will indicate that the threat exists for scattered severe weather, including scattered wind damage (produced by straight-line sustained winds and/or gusts of 60 to 70 mph), scattered severe hail (varying in size from 0.25 inches (0.64 cm) to 1.75 inches (4.4 cm)) and/or isolated tornadoes (often of shorter duration ...
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The size of individual hailstones that reach surface level is determined by speed of the updraft which create the individual ice crystals at atmospheric levels. Larger hailstones are capable of producing damage to property, and particularly with very large hailstones, resulting in serious injury or death due to blunt-force trauma induced by the ...