Author archives: Roger Edwards

  • KC Mammatus Returns

  • Almost a year after the skies of downtown Kansas City treated me to their first show of supercell-spawned mammatus clouds, this encore presentation proved history can repeat. The situation was a little different, with an HP (heavy-precip) supercell WSW of town instead of NW, but the photography location, cloud type, storm ty[...]
  • Stratocumulus Billows

  • Undulating ripples, regularly spaced and orderly, seem out of place in a chaotic atmosphere. They're fairly common, though! Billow clouds can form at many different levels in the atmosphere, and are related to wind shear. Here, the stratocumulus undulatus billows were trapped under a temperature inversion in the low levels o[...]
Unintended Lake
  • Unintended Lake

  • For over two hours, heavy-precipitation cores trained along the southern hills overlooking Chadron, and the water had to go somewhere.  Much of it ended up flowing right down across town, ponding up in level areas like this.  Somehow I suspect that utility box at left was non-functional at this moment. Chadron, NE (21 Jun[...]
Flying under the Base
  • Flying under the Base

  • Flying directly beneath a big base of an growing cumulonimbus is not something I recommend because of the potential for both updraft turbulence and an unforeseen downburst.  However, this attempt was remarkably smooth on approach to the airport, and offered a seldom-experienced perspective of a building thunderstorm. over[...]
  • When Thunderstorms Collide

  • What can happen when 2 thunderstorms join? A laminar, striated arcus cloud and some powerful fireworks! There is a lot of great storm-scale meteorology in this picture. Note how the cloud base of the storm at left is forced upward, parallel to and above the arcus cloud. The arcus condenses in moist air being smoothly lifted [...]