2007 Alum Rock earthquake

2007 earthquake in the San Francisco Bay Area, California, United States May 2025 February 2025 2007 Alum Rock earthquake 2007 10 30 20:04 PDT 2007-10-31 03:04:54 USA California California 38.45 -122.7 Santa Rosa 100 Green pog.svg California 36.6 -121.9 Monterey 100 Green pog.svg California 37.43 -121.77 Bullseye1.png 40 yes 250 right nc40204628 13253322 w 5.6 Limited VIM 5.6 – 6 km NNE of East Foothills, California – Shakemap https://earthquake.usgs.gov/earthquakes/eventpage/nc40204628/map?shakemap-code=nc40204628&shakemap-source=nc&shakemap-intensity=false&shakemap-mmi-contours=true&shakemap-stations=true United States Geological Survey 10 km flip 37.43 -121.77 type:event_region:US-CA inline,title Calaveras Fault Strike-slip South Bay Northern California United States None The 2007 Alum Rock earthquake occurred on October 30 at 8:04 p.m. Pacific Daylight Time October 31, 3:04 a.m. UTC in Alum Rock Park in San Jose, in the U.S. state of California. It measured 5.6 on the moment magnitude scale and had a maximum Mercalli intensity of VI (Strong). The event was then the largest in the San Francisco Bay Area since the 1989 Loma Prieta earthquake, which measured 6.9 on the moment magnitude scale, but was later surpassed by the 2014 South Napa earthquake. Ground shaking from the Alum Rock quake reached San Francisco and Oakland and other points further north. Sixty thousand felt reports existed far beyond Santa Rosa, as far north as Eugene, Oregon. Earthquake The shock originated on the Calaveras Fault and ruptured an area of the fault for a length of about 5 km on beginning at the hypocenter and extending southeast. There was no evidence of any surface rupture along the fault caused by the earthquake.https://earthquake.usgs.gov/eqcenter/eqinthenews/2007/nc40204628/#summary Magnitude 5.6 – SAN FRANCISCO BAY AREA, CALIFORNIA United States Geological Survey 2008-09-23 2008-10-10 https://web.archive.org/web/20081007023609/http://earthquake.usgs.gov/eqcenter/eqinthenews/2007/nc40204628/ 7 October 2008 live David Oppenheimer, a seismologist at the United States Geological Survey (USGS), said that although the quake was felt as a strong jolt over a wide region, it was more significant because it caused stress changes in the Calaveras Fault and the nearby Hayward Fault.http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/10/31/MNCAT3RA1.DTL https://web.archive.org/web/20071031232017/http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/10/31/MNCAT3RA1.DTL dead October 31, 2007 Quake raises danger of more action on volatile Hayward Fault San Francisco Chronicle Perlman David 2007-10-31 2008-10-10 Damage Intensity VI (Strong) effects included broken windows and items that were knocked off store shelves, but the event caused no serious damage or injuries. Some parts of the Bay Area felt the rupture for up to 15 seconds. Early warning ElarmS, an earthquake early warning system, accurately predicted the quake seconds before it struck, correctly estimating the earthquake's magnitude to within 0.5 magnitude units using only three to four seconds' worth of data. Scientists with the California Integrated Seismic Network hope to refine the system to provide a 10-second warning in a similar quake to residents of Oakland and San Francisco.Early warning system predicted shaking from Oct. 30 quake, PhysOrg.com, December 11, 2007. Retrieved October 16, 2008. See also California List of earthquakes in 2007 List of earthquakes in California List of earthquakes in the United States UCERF3 References Significant Earthquake Database https://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1 https://web.archive.org/web/20060929000601/http://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1 dead September 29, 2006 National Geophysical Data Center / World Data Service (NGDC/WDS) National Geophysical Data Center, NOAA 10.7289/V5TD9V7K 1972 Data Set PAGER-CAT Earthquake Catalog https://earthquake.usgs.gov/static/lfs/data/pager/catalogs/ https://web.archive.org/web/20200313112456/ftp://hazards.cr.usgs.gov/web/data/pager/catalogs/ dead 2020-03-13 September 4, 2009 United States Geological Survey Version 2008_06.1 Sources Geodetically Inferred Coseismic and Postseismic Slip due to the M 5.4 31 October 2007 Alum Rock Earthquake http://www.bssaonline.org/content/99/5/2784 J. R. Murray-Moraleda R. W. Simpson 2009 Bulletin of the Seismological Society of America 99 5 2784–2800 10.1785/0120090017 2009BuSSA..99.2784MJune 2023 InternetArchiveBot yes The 2007 M5.4 Alum Rock, California, earthquake: Implications for future earthquakes on the central and southern Calaveras Fault D. H. Oppenheimer W. H. Bakun T. Parsons R. W. Simpson J. Boatright R. A. Uhrhammer 2010 Journal of Geophysical Research 115 B8 B08305 10.1029/2009JB006683 2010JGRB..115.8305O https://zenodo.org/record/896947 free External links The Alum Rock Earthquake of October 30, 2007, 08:04 pm PDT – Berkeley Seismological Laboratory 13253322 2007 Category:2007 earthquakes Category:2007 natural disasters in the United States Category:2007 in California Category:October 2007 in the United States