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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.1 mag, 66 km S of La Libertad, El Salvador


Earthquake location 12.8918S, -89.2348WA light earthquake magnitude 4.1 (ml/mb) has struck on Thursday, 66 kilometers (41 miles) from La Libertad in El Salvador. The 4.1-magnitude earthquake was detected at 09:54:50 / 9:54 am (local time epicenter). Exact location, longitude -89.2348° West, latitude 12.8918° North, depth = 52.717 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us6000qww2. Id of event: us6000qww2. The earthquake occurred at a depth of 52.717 km (33 miles) below the earth’s surface. Global time and date of event 31/07/25 / 2025-07-31 09:54:50 / July 31, 2025 @ 9:54 am UTC/GMT.

Earthquake epicenter was 89 km (55 miles) from San Salvador (c. 526 000 pop), 92 km (57 miles) from Soyapango (c. 329 700 pop), 87 km (54 miles) from Santa Tecla (c. 124 700 pop), 85 km (53 miles) from San Marcos (c. 54 600 pop), 78 km (49 miles) from Zacatecoluca (c. 39 600 pop), 91 km (57 miles) from Ilopango (c. 38 900 pop). Nearby country/countries, El Salvador (c. 6 052 000 pop) (That might be effected). Nearest cities/city/towns to hypocenter/epicentrum was Soyapango, Ilopango, San Salvador (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been four, in the last 10 days six, in the past 30 days six and in the last 365 days sixty-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light quakes in the world each year.

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: 66 km S of La Libertad, El Salvador.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -89.2348° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 12.8918° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 52.717 km Depth of the event in kilometers.
Place 66 km S of La Libertad, 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 2025-07-31 09:54:50 Time when the event occurred. UTC/GMT
Updated 2025-08-24 13:37:30 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 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 259 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 28 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.866 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.05 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 179 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 us6000qww2 Id of event.
Event Code 6000qww2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000qww2, A comma-separated list of event ids that are associated to an event.

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