the first thing I thought of would be a category 4 or 5 hurricane hitting the Gulf area... but the hurricane map shows that it is pretty far off... long shot. http://www.nhc.noaa.gov/
next thing could only be the federal reserve going belly up with the bottom dropping out of the dollar...
After that, perhaps they are planning to invade Arizona to make sure the illegals' humanitarian rights are not trampled on any longer.