Line echo wave pattern: Difference between revisions

Revision as of 10:51, 28 July 2012

Revision as of 10:53, 28 July 2012

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[[File:Illinois-LEWP.jpg|thumb|right|A LEWP in Illinois, associated with a very large derecho]]

A '''line echo wave pattern''' or '''LEWP''' (pronounced "loop" or spelled out) is the radar signature associated with a multiple-bow serial [[derecho]].<ref>[{{cite web | url=http://www.crh.noaa.gov/iwx/?n=severestorms_2011apr19 Severe Storms of April 19th-20th<!-- Bot generated| title=Severe Thunderstorms and Tornadoes of April 19-->]20, 2011 | publisher=National Weather Service Weather Forecast Office, Northern Indiana | date=April 24, 2011 | accessdate=July 28, 2012 | author=Obergfell; Lashley; Chamberlain}}</ref>

A LEWP, according to the NWAS, is defined as "a squall line that has developed into a wave-like pattern due to acceleration at one end of the line and deceleration along the portion immediately adjacent."<ref>{{cite web | url=http://www.nwas.org/committees/avnwinterwx/doppler_weather_radar_overview.htm | title=Doppler Weather Radar Overview | publisher=NWAS | work=Echo Identification using NEXRAD: Line Echo Wave Pattern | accessdate=July 28, 2012}}</ref>