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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag has occurred near South Sandwich Islands region

Posted by admin on October 18, 2025 0 Comments

Earthquake location -58.8943S, -25.6228WA light earthquake magnitude 4.5 (ml/mb) has struck on Friday, South Sandwich Islands region (0 miles). The temblor was reported at 11:28:18 / 11:28 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 19/09/25 / 2025-09-19 11:28:18 / September 19, 2025 @ 11:28 am UTC/GMT. Id of earthquake: us6000rgcc. Event ids that are associated: us6000rgcc. Exact location of event, longitude -25.6228 West, latitude -58.8943 South, depth = 35 km. The earthquake occurred at a depth of 35 km (22 miles) below the earth’s surface.

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. In the past 24 hours, there have been twelve, in the last 10 days fourteen, in the past 30 days sixteen and in the last 365 days seventy-four earthquakes of magnitude 3.0 or greater that was reported nearby.

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: South Sandwich Islands region.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -25.6228° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -58.8943° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place South Sandwich Islands region Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-09-19 11:28:18 Time when the event occurred. UTC/GMT
Updated 2025-10-18 08:39:05 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 312 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 27 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 20.258 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.85 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 78 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 us6000rgcc Id of event.
Event Code 6000rgcc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rgcc, A comma-separated list of event ids that are associated to an event.

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