Farther south in California, it’s difficult to pin down exactly how at risk Los Angeles is for The Big One – the infamous theoretical earthquake along the San Andreas fault that will devastate the city. But a massive magnitude 7.5 earthquake has about a 1 in 3 chance of striking the Los Angeles area in the next 30 years, the United States Geological Survey estimates.

A 2008 scenario said a magnitude 7.8 quake could cause nearly 2,000 deaths and more than $200 billion in economic losses. Big quakes in Los Angeles are particularly devastating because the soil holding up the city will turn into a “bowl of jelly,” according to a post published by catastrophe modeling company Temblor.

Another scenario warns that a stretch of coast in Oregon and Washington state is capable of producing an earthquake much more powerful than the ones California is bracing for. Parts of coastline would suddenly drop 6 feet, shattering critical bridges, destroying undersea communication cables and producing a tsunami.

Thousands are expected to die, but local leaders are considering projects that could give coastal residents a better chance at survival.