M 5.4 earthquake – 6 km NNE of East Foothills, California
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Local time: Oct 30, 2007 · 20:04 (UTC-7)
ModerateShallow · 9.7 km
Reviewed by a seismologist
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- Magnitude
- 5.4moment magnitude (mw)
- Depth
- 9.7 kmShallow earthquake
- Epicenter
- 37.434, -121.77412 km from Milpitas
- Energy released
- 1.9 kilotons of TNTless than one Hiroshima bomb
- Felt reports
- 60,195"Did You Feel It?" responses
- Shaking intensity
- 6.2max. instrumental (MMI)
- Aftershocks
- 8M2.5+ within 30 km, up to 60 days
- Significance
- 1,077USGS score, 0–1,000+
The strongest here since 2004
The last earthquake at least as strong within 300 km struck on Sep 28, 2004.
How strong was it?
Moderate earthquake. It released 1.9 kilotons of TNT, 4 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
8 earthquakes of M2.5+ within 30 km in the 60 days after.
- 2.8 8 km E of East Foothills, California Oct 31, 2007
- 3.7 6 km NNE of East Foothills, California Oct 31, 2007
- 2.8 6 km ENE of East Foothills, California Nov 4, 2007
- 2.6 11 km ESE of East Foothills, California Nov 6, 2007
- 2.6 6 km NE of East Foothills, California Nov 12, 2007
- 2.7 10 km NNE of East Foothills, California Nov 24, 2007
- 2.6 6 km NE of East Foothills, California Nov 27, 2007
- 3.1 14 km E of Seven Trees, California Dec 21, 2007
The strongest earthquakes within 300 km
Since 1900, around United States.
- 7.9 The 1906 San Francisco, California Earthquake Apr 18, 1906
- 6.9 The 1989 Loma Prieta, California Earthquake Oct 18, 1989
- 6.7 The 1983 Coalinga, California Earthquake May 2, 1983
- 6.5 10 km NE of San Simeon, California Dec 22, 2003
- 6.5 1922 Parkfield, California Earthquake Mar 10, 1922
- 6.4 Near Morgan Hill, California Jul 1, 1911
- 6.4 The 1986 Chalfant Valley, California Earthquake Jul 21, 1986
- 6.4 1901 Parkfield, California Earthquake Mar 3, 1901