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sheet lightning
sheet lightningn. Lightning that appears as a broad sheetlike illumination of parts of a thundercloud, caused by the reflection of a lightning flash.sheet lightning n (Physical Geography) lightning that appears as a broad sheet, caused by the reflection of more distant lightning sheet′ light`ning
n. lightning appearing as a general illumination over a broad area, usu. because the path of the flash is obscured by clouds. [1820–30] sheet lightning - Appears as a broad sheetlike illumination of parts of a thundercloud, caused by the reflection of a lightning flash.See also related terms for reflection.Translationssheet lightning
sheet lightning[′shēt ¦līt·niŋ] (geophysics) A diffuse, but sometimes fairly bright, illumination of those parts of a thundercloud that surround the path of a lightning flash, particularly a cloud discharge or cloud-to-cloud discharge. Also known as luminous cloud. anvil crawlerSlang for a lightning discharge occurring within the anvil of a thunderstorm. It is characterized by one or more channels that appear to crawl along the underside of the anvil. They typically appear during the weakening or dissipating stage of the parent thunderstorm or during an active mesoscale convective system. Also called sheet lightning. |