This was the first disaster I unlocked, so I thought Id test in out on my city.. Follow me on Twitter: br br Movie clips from various city disasters.br br I was just talking to my stream and explaining that whenever my city balances out with proper water, income, electricity and sewage a disaster pops up and ru.br br The Texas City disaster which was begun with the Grandcamps explosion triggered the worst industrial disaster, resulting in the largest number of casualties.