Light earthquake, 4.7 mag was detected near Hihifo in Tonga

A light earthquake magnitude 4.7 (ml/mb) has occurred on Saturday, 45 kilometers (28 miles) from Hihifo in Tonga. The 4.7-magnitude earthquake has occurred at 13:14:52 / 1:14 pm (local time epicenter). All ids that are associated to the event: us6000qh2x. Unique identifier: us6000qh2x. 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 108.698 km (68 miles) below the earth’s surface. Global time and date of event 31/05/25 / 2025-05-31 13:14:52 / May 31, 2025 @ 1:14 pm UTC/GMT. Exact location of event, depth 108.698 km, -174.2043° West, -15.8326° South.

Close country/countries that might be effected, Tonga (c. 123 000 pop). Event epicenter was 46 km (28 miles) from Hihifo (c. 800 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Hihifo.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days eight and in the last 365 days seventy-two earthquakes of magnitude 3.0 or greater that has occurred nearby.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 45 km WNW of Hihifo, Tonga.

Hihifo Tonga

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Parameter	Value	Description
Magnitude	4.7 mb	The magnitude for the event.
Longitude	-174.2043° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-15.8326° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	108.698 km	Depth of the event in kilometers.
Place	45 km WNW 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	2025-05-31 13:14:52	Time when the event occurred. UTC/GMT
Updated	2025-05-31 13:34:35	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	340	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	62	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	3.023	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.88 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	93	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	us6000qh2x	Id of event.
Event Code	6000qh2x	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000qh2x,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.7 mag was detected near Hihifo in Tonga

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