Keywords: Bow echo diagram.svg Typical evolution of a thunderstorm radar echo a into a bow echo b c and into a comma echo d Dashed line indicates axis of greatest potential for downbursts Arrows indicate wind flow relative to the storm Note regions of cyclonic rotation C and anticyclonic rotation A ; both regions especially C are capable of supporting tornado development in some cases Vectorization of http //www srh noaa gov/oun/severewx/figure1 php Plain GIF version was uploaded to English Wikipedia as Bowecho1 gif on 9 Apr 2007 UTC by Utahweather National Weather Service Public domain inkscape PD-USGov Remember the dot Squall line diagrams |