August 2011 DeKalb Shelf Cloud

As is typical with early-to-mid morning, warm-season mesoscale convective systems (MCSs) across the Midwest, they tend to be highly photogenic and feature laminar heads. I suspect this is due to the residual nocturnal boundary layer inversion and cold pool forcing air through a stable layer. This particular lapse was shot sans tripod from the interior of my car due to the stratiform rain falling ahead of the squall.

Animated gif: