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Minor earthquake 2.54 mag, 9 km ENE of Blackhawk, California

Earthquake location 37.8448334S, -121.8033371WA minor earthquake magnitude 2.54 (mg/mb) has striked on Thursday, 9 kilometers (6 miles) from Blackhawk in California. The temblor was reported at 01:27:23 / 1:27 am (local time epicenter) at a depth of 15.63 km (10 miles). Global time of event 2014-12-18 09:27:23 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -121.8033371 West, latitude 37.8448334 North, depth 15.63 km.

Close countries, United States (c. 310 233 000 pop). The epicenter was 57 km (35 miles) from San Jose (c. 945 900 pop), 55 km (34 miles) from San Francisco (c. 805 200 pop), 41 km (26 miles) from Oakland (c. 390 700 pop), 47 km (29 miles) from Stockton (c. 291 700 pop), 37 km (23 miles) from Fremont (c. 214 100 pop). Nearest city, towns to epicentrum/hypocenter was Novato, Elk Grove, Patterson.

Did you feel it?

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: 9 km ENE of Blackhawk, California.

More information

Parameter Value Description
Magnitude 2.54 mb The magnitude for the event.
Longitude -121.8033371° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.8448334° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 15.63 km Depth of the event in kilometers.
Place 9km ENE of Blackhawk, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2014-12-18 09:27:23 Time when the event occurred. UTC/GMT
Updated 2014-12-18 09:29:27 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 99 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 49 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.03436 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.15 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 92 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 nc72366326 Id of event.
Event Code 72366326 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS nc72366326 A comma-separated list of event ids that are associated to an event.

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