Here in Belgium a storm caused 2 tents and several trees to collapse on the 60.000 men audience at Pukkelpop last thursday, killing 5 and leaving 3 on life support, 11 on IC care and 140 hospitalized for fractures, lacerations etc. The storm just snapped 10 inch trees and trew them in the audience...
I was on duty that day but a lot of my colleagues were working on the festival while others were attending, they acted great and with the help of many policemen, firemen, medics and docters from the audience there was a large medical post in a nearby spots hall, all help was fast and ran super except for the shortage on medication at one point in time...fireman/emt from my department called it "war medicine"
This was a short burst of thunder storm up to tornado speeds which is as good never seen here in Europe...
A big thumbs up for all of my colleagues and other responders...
The sound you hear is the wind, this happened around 18.00, sunset is around 19.30 these days but it was pitch black...