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Minor earthquake 2.81 mag, 47 km NE of San Clemente Is. (SE tip), CA


Earthquake location 33.0621681S, -117.9339981WA minor earthquake with magnitude 2.81 (ml/mb) was reported 47 kilometers (29 miles) from San Clemente Is. (SE tip) in CA on Monday. The temblor was reported at 16:43:45 / 4:43 pm (local time epicenter). Id of earthquake: ci40966152. Event ids that are associated: ci40966152. Exact location, longitude -117.9339981° West, latitude 33.0621681° North, depth = -0.09 km. The earthquake occurred at a depth of -0.09 km (-0 miles) below the earth’s surface. Global time and date of event 28/10/24 / 2024-10-28 16:43:45 / October 28, 2024 @ 4:43 pm UTC/GMT.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Seal Beach, Tustin, Santa Ana. Epicenter of the event was 76 km (47 miles) from Santa Ana (c. 324 500 pop), 68 km (42 miles) from Irvine (c. 212 400 pop), 67 km (41 miles) from Huntington Beach (c. 190 000 pop), 54 km (33 miles) from Oceanside (c. 167 100 pop), 64 km (40 miles) from Costa Mesa (c. 110 000 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop).

In the past 24 hours, there have been 0, in the last 10 days two, in the past 30 days five and in the last 365 days seventeen earthquakes of magnitude 3.0 or greater that has occurred nearby. 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.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking 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: 47 km NE of San Clemente Is. (SE tip), CA.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -117.9339981° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 33.0621681° North Decimal degrees latitude. Negative values for southern latitudes.
Depth -0.09 km Depth of the event in kilometers.
Place 47 km NE of San Clemente Is. (SE tip), CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2024-10-28 16:43:45 Time when the event occurred. UTC/GMT
Updated 2024-10-28 16:45:52 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI 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 70 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4316 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.22 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 219 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 ci40966152 Id of event.
Event Code 40966152 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ci40966152, A comma-separated list of event ids that are associated to an event.

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