In figure , the beginning comma cloud circulation is seen in a GOES IR image from
April 11th. This circulation, centered roughly over Kansas, began in the curved area
noted the previous day. The cloud shield associated with this circulation is extensive.
figure 27c. GOES image, April 11, 1994, 0900 CDT
image courtesy of M. Ramamurt h y, University of Illinois, Urbana/Champaign