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Light earthquake: M4 quake has struck near Hihifo in Tonga

Posted by admin on October 23, 2025 0 Comments

Earthquake location -15.5327S, -174.5654WA light earthquake magnitude 4 (ml/mb) has occurred on Thursday, 94 km WNW of Hihifo, Tonga (58 miles). The 4-magnitude earthquake has occurred at 04:25:23 / 4:25 am (local time epicenter). The earthquake was roughly at a depth of 174.63 km (109 miles). All ids that are associated to the event: us6000rhth. Unique identifier: us6000rhth. Exact location of earthquake, longitude -174.5654 West, latitude -15.5327 South, depth = 174.63 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 25/09/25 / 2025-09-25 04:25:23 / September 25, 2025 @ 4:25 am UTC/GMT.

In the past 24 hours, there have been four, in the last 10 days five, in the past 30 days nine and in the last 365 days fifty-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. There are an estimated 13,000 light earthquakes in the world each year.

How would you describe the shaking?

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: 94 km WNW of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -174.5654° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.5327° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 174.63 km Depth of the event in kilometers.
Place 94 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 2025-09-25 04:25:23 Time when the event occurred. UTC/GMT
Updated 2025-10-23 01:23:49 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 29 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.14 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.55 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 104 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 us6000rhth Id of event.
Event Code 6000rhth An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rhth, A comma-separated list of event ids that are associated to an event.

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