The Hillsborough disaster was the fault of the unruley behaviour of the Liverpool fans on the day pushing to get in - at any cost, this was compounded by (in hindsight) poor police choices as opening...
Alan Hansen
Whirlwinds (tornado), Water Main breaks, Wrecks, Wayward Winds, Walk in on brother in the bathroom, Wildlife stampede,
tsunami or tidal wavetornadotemblor
Avalanche!