The risk is lower, but still high. The last estimate was a 16.5% chance of a magnitude 7.0 earthquake in 100 years[1]. I expect the probability will be revised

The risk is lower, but still high. The last estimate was a 16.5% chance of a magnitude 7.0 earthquake in 100 years[1]. I expect the probability will be revised to be higher in the seismic hazard assessments due to be released this year. 7.0 doesn't sound big, but keep in mind, the epicenter would be quite close to the surface and likely to be right in the middle of a highly populated area on the Wasatch Front (Salt Lake City, Cottonwood Heights, etc). Also, many buildings in the vulnerable areas pre-date construction codes that take seismic risk into account. For example, it wasn't until the late 70's that they started reinforcing masonry construction. [1] http://www.livescience.com/28782-utah-bigger-earthquakes-wasatch-fault.html http://www.livescience.com/28782-utah-bigger-earthquakes-was...