Moderate earthquake, 5.1 mag was detected near Fangale’ounga in Tonga

A moderate earthquake with magnitude 5.1 (ml/mb) was reported 95 kilometers (59 miles) from Fangale’ounga in Tonga on Saturday. Global time and date of event 05/04/25 / 2025-04-05 09:19:55 / April 5, 2025 @ 9:19 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us6000q47z. Event ids that are associated: us6000q47z. The 5.1-magnitude earthquake has occurred at 09:19:55 / 9:19 am (local time epicenter). The earthquake occurred at a depth of 13.913 km (9 miles) below the earth’s surface. Exact location of earthquake, longitude -173.4774 West, latitude -20.0819 South, depth = 13.913 km.

Nearest cities/city/villages to epicentrum/hypocenter was Pangai (min 5000 pop). Epicenter of the earthquake was 96 km (60 miles) from Pangai (c. 1 700 pop). Nearby country/countries that might be effected, Tonga (c. 123 000 pop).

In the past 24 hours, there have been one, in the last 10 days thirteen, in the past 30 days fifteen and in the last 365 days sixty-three earthquakes of magnitude 3.0 or greater that was reported nearby. Each year there are an estimated 1320 moderate earthquakes in the world. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

Questions or comments?

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 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: 95 km ESE of Fangale’ounga, Tonga.

More information

Parameter	Value	Description
Magnitude	5.1 mb	The magnitude for the event.
Longitude	-173.4774° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-20.0819° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	13.913 km	Depth of the event in kilometers.
Place	95 km ESE of Fangale’ounga, Tonga	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-05 09:19:55	Time when the event occurred. UTC/GMT
Updated	2025-04-05 10:10:29	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	35	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	3.494	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.93 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	106	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	us6000q47z	Id of event.
Event Code	6000q47z	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000q47z,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake, 5.1 mag was detected near Fangale’ounga in Tonga

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