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

A light earthquake with magnitude 4.2 (ml/mb) was reported 165 km W of Hihifo, Tonga (103 miles) on Tuesday. The temblor was picked up at 05:03:45 / 5:03 am (local time epicenter). Global date and time of event UTC/GMT: 02/09/25 / 2025-09-02 05:03:45 / September 2, 2025 @ 5:03 am. The earthquake was roughly at a depth of 337.025 km (209 miles). Event id: us6000rd2i. Ids that are associated to the earthquake: us6000rd2i. Exact location, longitude -175.3369° West, latitude -16.0099° South, depth = 337.025 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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

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What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 165 km W of Hihifo, Tonga.

Hihifo Tonga

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	-175.3369° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-16.0099° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	337.025 km	Depth of the event in kilometers.
Place	165 km W of Hihifo, Tonga	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-09-02 05:03:45	Time when the event occurred. UTC/GMT
Updated	2025-09-28 12:52:43	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	28	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	4.021	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.08 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	102	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	us6000rd2i	Id of event.
Event Code	6000rd2i	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rd2i,	A comma-separated list of event ids that are associated to an event.

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

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