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Minor earthquake 2.55 mag, 13 km ESE of Alum Rock, California


Earthquake location 37.3165016S, -121.6858368WA minor earthquake magnitude 2.55 (mg/mb) has occurred on Monday, 13 kilometers (8 miles) from Alum Rock in California. The temblor was reported at 11:49:43 / 11:49 am (local time epicenter) at a depth of 7.16 km (4 miles). Global time of event 2015-01-12 07:49:43 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -121.6858368 West, latitude 37.3165016 North, depth 7.16 km.

Close countries, United States (c. 310 233 000 pop). The epicenter was 19 km (12 miles) from San Jose (c. 945 900 pop), 75 km (47 miles) from Oakland (c. 390 700 pop), 37 km (23 miles) from Fremont (c. 214 100 pop), 71 km (44 miles) from Modesto (c. 201 200 pop), 71 km (44 miles) from Salinas (c. 150 400 pop). Nearest city, towns to epicentrum/hypocenter was Waldon, Oakland, Hilmar-Irwin.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 13 km ESE of Alum Rock, California.


More information

Parameter Value Description
Magnitude 2.55 mb The magnitude for the event.
Longitude -121.6858368° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.3165016° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7.16 km Depth of the event in kilometers.
Place 13km ESE of Alum Rock, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-01-12 19:49:43 Time when the event occurred. UTC/GMT
Updated 2015-01-12 19:52:00 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status automatic Indicates whether the event has been reviewed by a human.
Tsunami This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 100 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network nc The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources nc A comma-separated list of network contributors.
Number of Stations Used 67 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.04265 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.05 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 47 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type md The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID nc72379986 Id of event.
Event Code 72379986 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS nc72379986 A comma-separated list of event ids that are associated to an event.

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