The costliest hurricane in U.S. history since 1900 was Andrew in 1992. Hurricane Andrew hit southeast Florida and southeast Louisiana causing about $26,500,000,000 in damages. That dollar amount has not been adjusted for inflation.
I checked NOAA's Nationa Hurricane Center Website for this information (http://www.nhc.noaa.gov/pastcost.shtml).

I found a list of links to Websites (mostly FEMA) that give information on what to do before, during, and after earthquakes. The page I am looking at is http://earthquake.usgs.gov/prepare/

According to the National Transportation Safety Board Website there have been no fatal plane crashes in Boulder in the past year. However, there was a nonfatal crash on Aug. 21, 2009. The next previous airplane accident was in Nov. 2008. Both incidents involved non-commercial aircraft. The two aircraft were of different makes.
On Jan. 31, 2000 Alaska Airlines flight 261 crashed into the Pacific Ocean killing 88.
On Aug. 27, 2006 49 people perished in a plane crash in Lexington, Kentucky.