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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.2 quake has struck near Houma in Tonga

Posted by admin on December 29, 2025 0 Comments

Earthquake location -20.1441S, -177.7104WA light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 275 km WNW of Houma, Tonga (171 miles). All ids that are associated to the event: us6000rw11. Unique identifier: us6000rw11. Exact location of earthquake, longitude -177.7104 West, latitude -20.1441 South, depth = 531.004 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 04/12/25 / 2025-12-04 11:42:06 / December 4, 2025 @ 11:42 am. The temblor was picked up at 11:42:06 / 11:42 am (local time epicenter). The earthquake occurred at a depth of 531.004 km (330 miles).

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

How would you describe the shaking?

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 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: 275 km WNW of Houma, Tonga.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -177.7104° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.1441° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 531.004 km Depth of the event in kilometers.
Place 275 km WNW of Houma, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-12-04 11:42:06 Time when the event occurred. UTC/GMT
Updated 2025-12-29 07:43:04 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 271 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 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 4.581 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.49 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 96 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 us6000rw11 Id of event.
Event Code 6000rw11 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rw11, A comma-separated list of event ids that are associated to an event.

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