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Light earthquake: M4.4 quake has struck near San Antonio in Chile

Posted by admin on August 31, 2025 0 Comments

Earthquake location -33.6008S, -71.6638WA light earthquake magnitude 4.4 (ml/mb) strikes 5 kilometers (3 miles) from San Antonio in Chile on Sunday. The earthquake occurred at a depth of 37.537 km (23 miles). Event ids that are associated to the earthquake: us7000qsrf. Id of event: us7000qsrf. The temblor was picked up at 08:42:54 / 8:42 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -71.6638 West, latitude -33.6008 South, depth = 37.537 km. Exact time and date of earthquake 31/08/25 / 2025-08-31 08:42:54 / August 31, 2025 @ 8:42 am UTC/GMT.

Country/countries that might be effected, Chile (c. 16 746 000 pop). The epicenter was 65 km (40 miles) from Viña del Mar (c. 294 600 pop), 63 km (39 miles) from Valparaíso (c. 282 400 pop), 89 km (55 miles) from San Bernardo (c. 249 900 pop), 65 km (40 miles) from Quilpué (c. 130 300 pop), 89 km (55 miles) from Lo Prado (c. 104 300 pop), 68 km (42 miles) from Villa Alemana (c. 97 300 pop). Nearest cities/city/villages to epicentrum/hypocenter was San Bernardo, Lo Prado, Quillota (min 5000 pop).

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

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 5 km W of San Antonio, Chile. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -71.6638° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -33.6008° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 37.537 km Depth of the event in kilometers.
Place 5 km W of San Antonio, Chile Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-31 08:42:54 Time when the event occurred. UTC/GMT
Updated 2025-08-31 09:03:49 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2.2 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 298 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 41 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.07 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.63 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 146 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 us7000qsrf Id of event.
Event Code 7000qsrf An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qsrf, A comma-separated list of event ids that are associated to an event.

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