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Light earthquake, 4 mag has occurred near San Agustín de Valle Fértil in Argentina

Posted by admin on October 9, 2025 0 Comments

Earthquake location -30.9045S, -67.0711WA light earthquake with magnitude 4 (ml/mb) was detected on Thursday, 48 kilometers (30 miles) from San Agustín de Valle Fértil in Argentina. The temblor was detected at 04:10:56 / 4:10 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us6000rfrq. Event ids that are associated: us6000rfrq. Global date and time of event UTC/GMT: 09/10/25 / 2025-10-09 04:10:56 / October 9, 2025 @ 4:10 am. The epicenter was at a depth of 36.112 km (22 miles). Exact location of earthquake, longitude -67.0711 West, latitude -30.9045 South, depth = 36.112 km.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was San Agustín de Valle Fértil. Close country/countries that might be effected, Argentina (c. 41 343 000 pop). Earthquake epicenter was 48 km (30 miles) from San Agustín de Valle Fértil (c. 6 900 pop).

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

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 48 km SE of San Agustín de Valle Fértil, Argentina.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -67.0711° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -30.9045° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 36.112 km Depth of the event in kilometers.
Place 48 km SE of San Agustín de Valle Fértil, Argentina Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-10-09 04:10:56 Time when the event occurred. UTC/GMT
Updated 2025-10-09 04:42:19 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 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 37 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.512 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 65 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000rfrq Id of event.
Event Code 6000rfrq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rfrq, A comma-separated list of event ids that are associated to an event.

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