A near perfect comma-shaped storm impacting the center of the Uinted States.
This system spawned the devastating Joplin, Missouri, tornado.
Image ID: wea04445, NOAA's National Weather Service (NWS) Collection
Photo Date: 2011 May 25
• High Resolution Photo Available
of the U.S. Department of Commerce, National Oceanic & Atmospheric
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May 12, 2014