Light earthquake, 4.3 mag strikes near South Sandwich Islands region

A light earthquake with magnitude 4.3 (ml/mb) was detected on Sunday, South Sandwich Islands region (0 miles). The temblor was picked up at 01:06:57 / 1:06 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 60.75 km (38 miles). Exact location of event, depth 60.75 km, -27.1585° West, -55.9112° South. Event id: us6000rh4g. Ids that are associated to the earthquake: us6000rh4g. Global date and time of event UTC/GMT: 21/09/25 / 2025-09-21 01:06:57 / September 21, 2025 @ 1:06 am.

In the past 24 hours, there have been three, in the last 10 days six, in the past 30 days nine and in the last 365 days ninety 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 quakes in the world.

Did you feel the quake?

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. 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: South Sandwich Islands region.

South Sandwich Islands region

More information

Parameter	Value	Description
Magnitude	4.3 mb	The magnitude for the event.
Longitude	-27.1585° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-55.9112° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	60.75 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	2025-09-21 01:06:57	Time when the event occurred. UTC/GMT
Updated	2025-10-17 22:54:23	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	284	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	9	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	5.6	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.4 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	198	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	us6000rh4g	Id of event.
Event Code	6000rh4g	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rh4g,	A comma-separated list of event ids that are associated to an event.

Earthquakes today

Current and latest world earthquakes breaking news, activity and articles today

Light earthquake, 4.3 mag strikes near South Sandwich Islands region

Did you feel the quake?

More information

Leave a ReplyCancel reply

Follow us!

Tsunami videos

Categories

Information