Moderate mag. 5.4 earthquake - 1.3 mi southwest of kankarda, Contra Costa County, California, USA, on Monday, 24 October 1955 at 04:10 (GMT)

Moderate mag. 5.4 earthquake  - 1.3 mi southwest of kankarda, Contra Costa County, California, USA, on Monday, 24 October 1955 at 04:10 (GMT)

Moderate magnitude 5.4 earthquake at 0 km depth

Date & time: 24 Oct 1955 04:10:44 UTC
Magnitude: 5.4
Depth: 0.0 km
Epicenter latitude / longitude: 37.967°N / 122.05°W (Contra Costa County, California, United States)
Nearest volcano: Clear Lake (128 km / 80 mi)
Nearby towns and cities:
2 km (1 mi) SW of Concord (pop: 128,700) --> See nearby quakes!
2 km (1 mi) NNE of Pleasant Hill (pop: 34,800) --> See nearby quakes!
7 km (4 mi) N of Walnut Creek (pop: 68,900) --> See nearby quakes!
9 km (6 mi) SE of Martinez (pop: 38,100) --> See nearby quakes!
10 km (6 mi) SW of Bay Point (Contra Costa County) (pop: 21,500) --> See nearby quakes!
11 km (7 mi) NNE of Lafayette (Contra Costa County) (pop: 25,800) --> See nearby quakes!
13 km (8 mi) SE of Benicia (Solano County) (pop: 28,200) --> See nearby quakes!
16 km (10 mi) WSW of New York of the Pacific (pop: 69,400) --> See nearby quakes!
39 km (24 mi) NE of San Francisco (pop: 864,800) --> See nearby quakes!
71 km (44 mi) NNW of San Jose (pop: 1,026,900) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 1012 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
MagnitudeDepthLocationSource
M 5.4 kmSan Francisco Bay area, California (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks

Moderate mag. 5.4 earthquake - 1.3 mi southwest of kankarda, Contra Costa County, California, USA, on Monday, 24 October 1955 at 04:10 (GMT)
Please check again later while we are collecting more data.

Earlier earthquakes in the same area

Moderate mag. 5.4 earthquake - 1.3 mi southwest of kankarda, Contra Costa County, California, USA, on Monday, 24 October 1955 at 04:10 (GMT)
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