This distant but splendid specimen of double-layered pileus formed atop an explosively convective, overshooting flanking tower for a heavy-precipitation (HP) supercell in northeastern Oklahoma. Behind the big tower, and above the anvil, we can see a small segment of another overshooting top. Knuckle clouds roll under the anvil on both sides of the big tower. This whole scene just before sunset was a delight for any love of atmospheric deep, moist convection! Soon afterward, the simple sunset in the dry slot would become an all-time favorite, along with nearby flanking towers crowned in alpenglow. By this time, little did we all know that the history-altering 3 May 1999 tornado outbreak was under two weeks into the future.
Norman OK (22 Apr 99) Looking ENE
35.2231, -97.3969