Mini Cloud Atlas
Retreating Mammatus over the National Weather Center
Spreading northwestard from momentum faster than the upper level flow could offset, the collective anvil shield of a few supercells spread voer the area, decorated with mammatus pouches. By this time, the entire complex had begn retreating away, the mammatus field still reflecting the muted twilight glow of a western sky tinted by the hidden sun. In the distance, a well-timed, cloud-to-ground lightning stroke punctuated the scene nicely.
Norman OK (22 Apr 11) Looking SE