> (In reply to anonymouse)
>
> Yeah ok I seem to have missed that on first viewing although I did think it was plausible that such a cloud could generate electrical activity.
Not a stupid suggestion at all. I think electrical activity is often seen in big avalanches.
I think that using artillery is a common method of dealing with loaded avalanche slopes. I'm sure I've seen footage of Americans doing the same in Colarado.
In reply to mcdougal:
In all fairness that was a massive slide, it looked like it stripped off a couple of nearby peaks in addition to the slope they were shelling.