The 1868 Hayward Earthquake Alliance Tom Brocher Alliance Chair USGS, Coordinator, NC Earthquake Hazard Investigations ShakeMap, Boatwright and Bundock

1868 Hayward Earthquake Tuesday, 0ctober 21 st marks the 140 th anniversary of the 1868 Hayward quake: the past five S. Hayward Fault earthquakes have been 140 years apart on average Lienkaemper and Williams

Who is the Alliance? 85 organizations

1868alliance.org

KPIX CBS5 Video

California Emergency Services Association, Coastal Region March 12th meeting at the USGS Menlo Park

1868 Hayward Earthquake “the great San Francisco earthquake” Shaking intensities were strong from San Leandro south through Hayward towards Alvarado They were weaker in Oakland and Mission San Jose

~M Hayward earthquake 30 fatalities, 5 in San Francisco (12th most lethal in US earthquake) $350,000 (in 1868 dollars) in damage in San Francisco alone Extensive damage in San Leandro, Hayward, and Fremont (total population less than 2000) Bay Area population was 260,000 (it is now 27 times larger)

Haywards Hotel, Haywards, 1860s Society of California Pioneers Hotel Hayward was heavily damaged by the 1868 earthquake. “Practically not a house was left on its foundations…” “Many buildings were much damaged.” (Lawson Report, 1908).

2 nd Alameda Co. Courthouse, San Leandro Society of California Pioneers Courthouse “At San Leandro the shock was more sensibly felt than at any other point on that side of the Bay. All the buildings were terribly shaken, adobes were thrown to the ground, brick structures, and even frame buildings were demolished. The Court House and County Jail were shaken down.” San Francisco Morning Call, 22 Oct. 1868

SUMMARY: 12-EVENT MODEL AGES Lienkaemper and Williams

1989 was NOT the big one for the East Bay!

Updating the 1996 EERI Hayward Fault Scenario Catastrophe Risk Management Exposures & expected losses: $120 billion direct economic loss, BART & Bay Bridge connections to San Francisco broken, 80,000 homeless needing shelter assistance, 1100 road closures, 11% exposed population live in poverty, 27% foreign born, fatalities

U.S. Dept. of Labor Bureau of Labor Statistics Report 85,000 employers, 1.5 million employees, $100 billion annual wages exposed to strong shaking (VII+) by a M6.9 Hayward Earthquake

Union City Hayward Newark San Leandro Prioritize Preparation Retrofits Rebuilds Codes Stage supplies Scientific instrumentation

Examples of new Hayward Fault related USGS Product Releases 1868 Hayward earthquake ShakeMap Hayward Fault Lidar Data “A Green Guide to the Hayward Fault” (mass transit) Hayward Fault in 3D Animations of a Hayward Fault earthquake showing ground motions ala 1906 movies 1868 Hayward Earthquake Virtual Tour

1868 Hayward Earthquake Alliance activities Commemoration Events School earthquake drills Public Service Announcements Hayward Fault art installation Teacher Tutorials TV Specials Hayward Fault Initiative (with EERI) Scientific Conferences