Thunderstorms involve lightning jumping within clouds and to the ground, can form in long squall lines, and are not necessarily short-lived.
Lightning can jump between parts of the same cloud as well as between the cloud and the ground during thunderstorms. Squall lines are long lines in which thunderstorms can form. Thunderstorms are not usually short-lived; while ordinary thunderstorms last about an hour, severe thunderstorms can last much longer due to vertical wind shear.
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