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Minor earthquake 2.81 mag, 22 km NW of Ocotillo, California



Earthquake location 32.8556667S, -116.182WA minor earthquake magnitude 2.81 (ml/mb) strikes 22 kilometers (14 miles) from Ocotillo in California on Tuesday. The 2.81-magnitude earthquake has occurred at 19:25:54 / 7:25 pm (local time epicenter). The earthquake was roughly at a depth of 3.81 km (2 miles). Id of earthquake: ci37264719. Event ids that are associated: ci37264719. Exact location of event, longitude -116.182 West, latitude 32.8556667 North, depth = 3.81 km. Global date and time of event UTC/GMT: 28/10/15 / 2015-10-28 02:25:54 / October 28, 2015 @ 2:25 am.

The epicenter was 73 km (45 miles) from Mexicali (c. 597 100 pop), 73 km (46 miles) from El Cajon (c. 99 500 pop), 52 km (33 miles) from Tecate (c. 58 300 pop), 74 km (46 miles) from Santee (c. 53 400 pop), 58 km (36 miles) from El Centro (c. 42 600 pop). Country/countries that might be effected, Mexico (c. 112 469 000 pop), United States (c. 310 233 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Holtville, Casa de Oro-Mount Helix, Santee.

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor quakes in the world each year. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days six and in the last 365 days thirty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel anything?

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: 22 km NW of Ocotillo, California.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -116.182° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 32.8556667° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 3.81 km Depth of the event in kilometers.
Place 22km NW of Ocotillo, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-10-28 02:25:54 Time when the event occurred. UTC/GMT
Updated 2015-10-28 02:30:02 Time when the event was most recently updated. UTC/GMT
Timezone offset -420 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 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 121 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 54 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1818 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.24 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 55 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 ci37264719 Id of event.
Event Code 37264719 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ci37264719, A comma-separated list of event ids that are associated to an event.

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