Charlotte, North Carolina banned any corporation headquarters forever.
The 1959 Hebgen Lake earthquake also known as the 1959 Yellowstone earthquake occurred on August 17 at 11 :37 pm -LRB- MST -RRB- in southwestern Montana , United States .. Montana. Montana. The earthquake measured 7.3 -- 7.5 on the Richter magnitude scale , and caused a huge landslide that caused over 28 fatalities and left $ 11 million -LRB- 1959 US$ , $ 88.7 million 2014 US$ -RRB- in damage .. Richter magnitude scale. Richter magnitude scale. The slide blocked the flow of the Madison River resulting in the creation of Quake Lake .. Madison River. Madison River. Quake Lake. Quake Lake. Effects of the earthquake were also felt in Idaho and Wyoming .. Idaho. Idaho. Wyoming. Wyoming. The 1959 quake was the strongest and deadliest earthquake to hit Montana since the 1935-36 Helena earthquakes left 4 people dead .. Montana. Montana. 1935-36 Helena earthquakes. 1935 Helena earthquake. It also caused the worst landslides in the history of the Northwestern United States since 1927 .. Northwestern United States. Northwestern United States