A squall line is a group of storms arranged in a line, often accompanied by “squalls” of high wind and heavy rain. Squall lines tend to pass quickly and are less prone to produce tornadoes than are supercells. They can be hundreds of miles long but are typically only 10 or 20 miles wide.
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Squall line
A squall line, or more accurately a quasi-linear convective system, is a line of thunderstorms, often forming along or ahead of a cold front. In the early 20th century, the term was used as a synonym for cold front. Wikipedia
Within squall line, a series of line echo wave patterns (LEWPs) and bow echoes often occur, resulting in damaging winds and possible transient tornadoes. High ...