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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near South Sandwich Islands region

Posted by admin on October 17, 2025 0 Comments

Earthquake location -58.8466S, -25.3979WA light earthquake magnitude 4.5 (ml/mb) has struck on Monday, South Sandwich Islands region (0 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -25.3979 West, latitude -58.8466 South, depth = 35 km. The epicenter was at a depth of 35 km (22 miles). The temblor was reported at 02:20:24 / 2:20 am (local time epicenter). Global date and time of event UTC/GMT: 22/09/25 / 2025-09-22 02:20:24 / September 22, 2025 @ 2:20 am. Event ids that are associated to the earthquake: us6000rhb6. Id of event: us6000rhb6.

Each 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 four, in the last 10 days twelve, in the past 30 days thirteen and in the last 365 days seventy-four earthquakes of magnitude 3.0 or greater that has struck near.

How would you describe the shaking?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: South Sandwich Islands region. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -25.3979° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -58.8466° 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 2025-09-22 02:20:24 Time when the event occurred. UTC/GMT
Updated 2025-10-17 04:16:16 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 23 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 31.393 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.43 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 100 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 us6000rhb6 Id of event.
Event Code 6000rhb6 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rhb6, A comma-separated list of event ids that are associated to an event.

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