Roger's SkyPix

Gallery of Outflow

Gust Front Highway

Gust Front Highway

Right about the time that individual cells along a cold front began to aggregate into a squall line, what then was the southernmost storm in the chain shot a strong gust front outward toward my position. The gust front at the surface was a couple of limes ahead of the leading edge of the cloud (arcus) that its cold air lifted and condensed. The mottled, lumpy appearance of the cloud's underside indicates exactly what was happening -- turbulent, chaotic flow, bounded by an invisible layer (of cold, stable air) below which the cloud material and its chaotic airflow didn't penetrate -- an inverted inversion, if you will.

9 E Okeene OK (18 Apr 9), Looking NW