($ billions) Rank Date Location Magnitude Insured loss (current exposures) 1 Feb. 7, 1812 New Madrid, MO 7.7 $112 2 Apr. 18, 1906 San Francisco, CA 7.8 93 3 Aug. 31, 1886 Charleston, SC 7.3 44 4 Jun. 1, 1838 San Francisco, CA 7.4 30 5 Jan. 17, 1994 Northridge, CA 6.7 23 6 Oct. 21, 1868 Hayward, CA 7.0 23 7 Jan. 9, 1857 Fort Tejon, CA 7.9 8 8 Oct. 17, 1989 Loma Prieta, CA 6.3 7 9 Mar. 10, 1933 Long Beach, CA 6.4 5 10 Jul. 1, 1911 Calaveras, CA 6.4 4 (1) Modeled loss to property, contents, business interruption and additional living expenses for residential, mobile home, commercial and auto exposures as of December 31, 2011. Losses include demand surge and fire following earthquake. Policy conditions and earthquake insurance take-up rates are based on estimates by state insurance departments and client claims data. Source: AIR Worldwide Corporation.