Moderate earthquake 5.1 mag, Balleny Islands region

A moderate earthquake with magnitude 5.1 (ml/mb) was reported Balleny Islands region (0 miles) on Sunday. The earthquake was roughly at a depth of 10 km (6 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 21/12/25 / 2025-12-21 13:12:48 / December 21, 2025 @ 1:12 pm. Exact location of earthquake, 161.4175° East, -61.9834° South, depth 10 km. The temblor was reported at 13:12:48 / 1:12 pm (local time epicenter). Id of earthquake: us6000rwby. Event ids that are associated: us6000rwby.

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 four earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 1320 moderate earthquakes in the world each year. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

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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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: Balleny Islands region. This information comes from the USGS Earthquake Notification Service.

Balleny Islands region

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Parameter	Value	Description
Magnitude	5.1 mb	The magnitude for the event.
Longitude	161.4175° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-61.9834° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	Balleny 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	2025-12-21 13:12:48	Time when the event occurred. UTC/GMT
Updated	2025-12-21 13:32:38	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	400	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	29	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	7.619	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.41 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	us6000rwby	Id of event.
Event Code	6000rwby	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rwby,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake 5.1 mag, Balleny Islands region

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