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Minor earthquake: M2.87 quake has struck near San Jacinto in CA

Earthquake location 33.8361667S, -116.9693333WA minor earthquake magnitude 2.87 (ml/mb) strikes 6 kilometers (4 miles) from San Jacinto in CA on Thursday. The epicenter of the earthquake was roughly 11.15 km (7 miles) below the earth’s surface. The 2.87-magnitude earthquake has occurred at 23:37:45 / 11:37 pm (local time epicenter). Global date and time of event UTC/GMT: 15/12/17 / 2017-12-15 07:37:45 / December 15, 2017 @ 7:37 am. Id of earthquake: ci37830143. Event ids that are associated: ci37830143. Exact location of earthquake, longitude -116.9693333 West, latitude 33.8361667 North, depth = 11.15 km.

Epicenter of the event was 41 km (26 miles) from Riverside (c. 303 900 pop), 42 km (26 miles) from San Bernardino (c. 209 900 pop), 52 km (32 miles) from Fontana (c. 196 100 pop), 27 km (17 miles) from Moreno Valley (c. 193 400 pop), 65 km (40 miles) from Rancho Cucamonga (c. 165 300 pop). Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Nearest cities/city/villages to epicentrum/hypocenter was Laguna Niguel, North Tustin, Apple Valley (min 5000 pop).

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

Questions or comments?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 6 km N of San Jacinto, CA.

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More information

Parameter Value Description
Magnitude 2.87 mb The magnitude for the event.
Longitude -116.9693333° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 33.8361667° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 11.15 km Depth of the event in kilometers.
Place 6km N of San Jacinto, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-15 07:37:45 Time when the event occurred. UTC/GMT
Updated 2017-12-15 07:48:38 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 25 The total number of felt reports
CDI 3.8 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 136 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ci The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ci, A comma-separated list of network contributors.
Number of Stations Used 112 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.02811 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.2 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 15 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ci37830143 Id of event.
Event Code 37830143 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ci37830143, A comma-separated list of event ids that are associated to an event.

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