Hail forms as a result of water droplets being carried above the freezing level by updrafts from thunderstorms. If a hailstone falls toward warmer air at the bottom of a thunderstorm, it thaws. However, if it is caught in another updraft, it collects additional layers of ice, growing larger before falling to the ground as hail.Know More
Most hail is relatively small, measuring fewer than 2 inches in diameter. However, even small hail is capable of causing a great deal of damage, owing in large part to the fact that it falls as fast as 90 miles per hour. According to the National Oceanic and Atmospheric Administration, a hail storm that occurred on April 10 in 2001 in Kansas City caused roughly $2 billion in damage.
The largest hailstone ever recorded fell in June 2003 in Aurora, Neb. The piece of hail measured more than 18 inches in circumference, 7 inches in diameter and weighed slightly less than 1 pound. The heaviest piece of hail on record fell in September 1970 in Coffeeville, Kan. It weighed 1.67 pounds, and it measured 17.5 inches in circumference and 5.7 inches in diameter.
In the United States, most hailstorms occur in the Great Plains region, which is just east of the Rocky Mountains. Hail falls primarily in spring and summer as that is when thunderstorms are most prevalent.
Many people mistake the sleet of winter, which is simply frozen raindrops, for hail.Learn more about Weather & Tides
Thunderstorms originate in cumulonimbus clouds. Warm, humid air rises then cools, creating moisture to form the cloud. Thunderstorms produce heavy rain, strong winds and sometimes hail.Full Answer >
Thunderstorms usually last for 30 minutes to an hour. They can happen in a singular fashion, in lines or in clusters. Some of the most dangerous thunderstorms happen when a single storm strikes in a location for a lengthy period of time.Full Answer >
Scattered thunderstorms cover a large area and are likely to include several storm rounds. Storm chaser Adam Lucio explains that "scattered" and "isolated" descriptors have no bearing on a thunderstorm's actual intensity. These descriptions refer to the coverage a thunderstorm has over a certain area.Full Answer >
Conduction, along with radiation and convection, are the causes for changes in the temperature, which also causes the change in the weather. Conduction plays a very small role in weather as the process is mostly reliant on convection, which explains the movement of warm air and how it rises.Full Answer >