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Light earthquake: M4 quake has struck near Acajutla in El Salvador



Earthquake location 12.8851S, -90.0539WA light earthquake with magnitude 4 (ml/mb) was reported 82 kilometers (51 miles) from Acajutla in El Salvador on Saturday. Global time and date of event 27/05/17 / 2017-05-27 12:58:45 / May 27, 2017 @ 12:58 pm UTC/GMT. Exact location of event, depth 38.08 km, -90.0539° West, 12.8851° North. The 4-magnitude earthquake was detected at 06:58:45 / 6:58 am (local time epicenter). The epicenter was at a depth of 38.08 km (24 miles). Event ids that are associated to the earthquake: us10008vsq. Id of event: us10008vsq. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Close country/countries that might be effected, El Salvador (c. 6 052 000 pop). Epicenter of the earthquake was 82 km (51 miles) from Acajutla (c. 22 800 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Acajutla.

In the past 24 hours, there have been four, in the last 10 days five, in the past 30 days fifteen and in the last 365 days fourty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby. Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 82 km SSW of Acajutla, El Salvador.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -90.0539° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 12.8851° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 38.08 km Depth of the event in kilometers.
Place 82km SSW of Acajutla, El Salvador Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-05-27 12:58:45 Time when the event occurred. UTC/GMT
Updated 2017-05-28 06:01:45 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 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 reviewed 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 246 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.129 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.02 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 184 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10008vsq Id of event.
Event Code 10008vsq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008vsq, A comma-separated list of event ids that are associated to an event.

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