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Minor earthquake 2.85 mag, 1 km NE of San Ramon, California


Earthquake location 37.7868347S, -121.9658356WA minor earthquake magnitude 2.85 (ml/mb) has struck on Wednesday, 1 kilometers (1 miles) from San Ramon in California. Id of earthquake: nc72536565. Event ids that are associated: nc72536565. The earthquake was roughly at a depth of 8.58 km (5 miles). The 2.85-magnitude earthquake has occurred at 03:58:41 / 3:58 am (local time epicenter). Global time and date of event 14/10/15 / 2015-10-14 10:58:41 / October 14, 2015 @ 10:58 am UTC/GMT. Exact location of event, longitude -121.9658356 West, latitude 37.7868347 North, depth = 8.58 km.

Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Petaluma, Dixon, Ripon. Epicenter of the event was 50 km (31 miles) from San Jose (c. 945 900 pop), 40 km (25 miles) from San Francisco (c. 805 200 pop), 27 km (17 miles) from Oakland (c. 390 700 pop), 62 km (39 miles) from Stockton (c. 291 700 pop), 27 km (17 miles) from Fremont (c. 214 100 pop).

In the past 24 hours, there have been 0, in the last 10 days 0, in the past 30 days 0 and in the last 365 days eighteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 1,300,000 minor earthquakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 1 km NE of San Ramon, California.

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More information

Parameter Value Description
Magnitude 2.85 mb The magnitude for the event.
Longitude -121.9658356° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.7868347° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.58 km Depth of the event in kilometers.
Place 1km NE of San Ramon, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-10-14 10:58:41 Time when the event occurred. UTC/GMT
Updated 2015-10-14 11:06:33 Time when the event was most recently updated. UTC/GMT
Timezone offset -420 Timezone offset from UTC in minutes at the event epicenter.
Felt 29 The total number of felt reports
CDI 3.1 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 0 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 134 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 56 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.07495 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.09 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 54 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 nc72536565 Id of event.
Event Code 72536565 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72536565, A comma-separated list of event ids that are associated to an event.

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