Earthquake losses

Estimates of past losses and future losses.

Losses from past earthquakes
Northridge	M6.7 January 17, 1994
$46 bill	estimate from CA Office of Emergency Services (2000 dollars)
Loma Prieta	M6.9 October 17, 1989
$10 bill	estimate from National Research Council (1994) (2000 dollars)
San Fernando	M6.6 February 9, 1971
$10 bill	estimate from FEMA (1997) (2000 dollars)
Estimates of future losses
Future losses can be estimated for specific senario earthquakes, e.g. a repeat of the 1906 San Francisco earthquake, or then can be annualized meaning the average cost of earthquakes per year.
Northern California
Repeat of the 1906 San Francisco earthquake M7.9 Impacting the San Francisco peninsula and costal region to the north.
$54 bill	Losses due to building damage only. From Rowshandel et al, CGS.
$170-225 bill	Includes all potential losses to buildings, transportation, utility systems etc and seconday effects such as fire and toxic releases. From the 1995 Risk Management SOlutions study.
Hayward fault rupture (north and south segments) M6.9 Impacting East-Bay Cities
$23 bill	Losses due to building damage only. From Rowshandel et al, CGS.
Hayward + Rodgers Creek faults M7.3 Impacting East-Bay Cities and regions to the north.
$34 bill	Losses due to building damage only. From Rowshandel et al, CGS.
Southern California
Puente Hills fault M7.1 Thrust fault beneath much of the LA basin
$69 bill	Losses due to building damage only. From Rowshandel et al, CGS.
Newport-Inglewood fault M6.9 Strike-slip fault beneath the LA basin
$49 bill	Losses due to building damage only. From Rowshandel et al, CGS.
These are just a few examples of some of the most damaging scenario earthquakes. For the (much) longer list of all senario earthquakes that have been identified see the full report: Rowshandel et al, CGS, 8.3Mb pdf
Annualized losses Annualized losses represent the long term, average losses due to potential ground motion hazards of all expected earthquakes in the region.
$2.2 bill	This is the average annual losses due to building damage only across California. From Rowshandel et al, CGS.
$104	This is the average annual loss per capita due to building damage only in California. From Rowshandel et al, CGS.
0.15%	This is the average annual loss ratio for building across California. This means that, state-wide and on average, earthquake ground motions are expected to cause damage to buildings equal to 0.15% of the dollar values each year. From Rowshandel et al, CGS.