Missed last night storms over Sheffield; I was asleep (although I think they just grazed us from the W & S). HST, I thought I heard several distant rumbles when I woke up.
Clouds looked impressive with the Cb and Ac cas con cloud bases looking very high, but there were occasional ragged low clouds (St fra, Cu fra) with patchy hill fog to the W.
The storms were that of medium level/elevated type. They feed on overheated lower troposphere rather than by direct surface heating, c.f, the storms on 18 May, and remain lively even if the surface is cold!
Originally Posted by: ozoneaurora