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Line echo wave pattern
Videos
A line echo wave pattern is a weather radar formation in which a single line of thunderstorms presenting multiple bow echoes forms equatorward of a mesoscale low-pressure area with a rotating "head".
A LEWP in Illinois/Indiana and Arkansas, associated with a very large derecho
A LEWP in Illinois/Indiana and Arkansas, associated with a very large derecho
Hook echo
Videos
A hook echo is a pendant or hook-shaped weather radar signature as part of some supercell thunderstorms. It is found in the lower portions of a storm as air and precipitation flow into a mesocyclone,
Line echo wave pattern
…tornadoes, some of which can be strong. The existence of a LEWP on radar means that a serial derecho has developed or is likely to develop soon, much as a hook echo indicates the same for a tornado. A LEWP, according to the NWS, is defined as "a squall line that has developed into a wave-like pattern due to…
A hook echo present on a radar image of the May 22, 2011 Joplin EF5 tornado. The signature, along with a debris ball, is present on the bottom-left po
A hook echo present on a radar image of the May 22, 2011 Joplin EF5 tornado. The signature, along with a debris ball, is present on the bottom-left portion of the supercell that produced the tornado.