The Super Hi-Resolution Visible Satellite Imagery below
depicted a differential heating boundary over northern Illinois, denoted by the
green line. Very little cumulus was
observed north of the green line where cirrus cloud cover was thicker, while
enhanced cumulus congestus was occurring south of the green line. With low level south to southwest flow,
cumulus that developed south of this boundary had a tendency to dissipate when
moving north of the green line/boundary. A severe storm denoted by the orange
circle in southeast Iowa was moving east northeast and seems to be moving along
this boundary. It will be interesting to
see if this storm will continue to be severe over the next few hours.
Michael Scotten
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