Light earthquake: M4 quake has struck near ‘Ohonua in Tonga

A light earthquake with magnitude 4 (ml/mb) was reported 156 km S of ‘Ohonua, Tonga (97 miles) on Friday. Exact location of event, longitude -174.8446 West, latitude -22.7463 South, depth = 10 km. The temblor was picked up at 07:10:41 / 7:10 am (local time epicenter). Id of earthquake: us6000pxgc. Event ids that are associated: us6000pxgc. 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 10 km (6 miles). Exact time and date of event in UTC/GMT: 28/02/25 / 2025-02-28 07:10:41 / February 28, 2025 @ 7:10 am.

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 two, in the last 10 days four, in the past 30 days six and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that has struck near.

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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: 156 km S of ‘Ohonua, Tonga.

`Ohonua Tonga

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	-174.8446° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-22.7463° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	156 km S of ‘Ohonua, Tonga	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-02-28 07:10:41	Time when the event occurred. UTC/GMT
Updated	2025-03-08 08:06:04	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	246	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	12	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	5.87	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.34 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	127	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	us6000pxgc	Id of event.
Event Code	6000pxgc	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000pxgc,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4 quake has struck near ‘Ohonua in Tonga

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