Quick request for information on behalf of TORRO, the Tornado and Storm Research Organisation (of which I am a member of a team who observe and report on thunderstorms). The recent storms over LHR are interesting, and the observations of professionals in the industry will carry a lot of weight. If you observed the storms and have a few minutes, please fill out the questionnaire on the following link:
http://www.torro.org.uk/appeal.htm
http://www.torro.org.uk/quethtxt.htm
You will apreciate that any details may be the piece in the puzzle of increased understanding of thunderstorms. Many thanks.