Image: Progressive derecho diagram
Progressive_derecho_diagram.jpg (312 × 281 pixels, file size: 15 KB, MIME type: image/jpeg)
Description: A progressive derecho event (hatched area) is typically associated with a squall line of restricted length (dashed & two dotted line) which may involve a single bow echo or multiple bow echoes. Progressive derecho events are usually associated with a stationary front in a rather stagnant weather pattern.
Title: Progressive derecho diagram
Credit: http://www.spc.noaa.gov/misc/AbtDerechos/derechosqlns.htm
Author: NOAA (many contributors acknowledged)
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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