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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag strikes near Hihifo in Tonga

Posted by admin on September 29, 2025 0 Comments

Earthquake location -17.2459S, -174.4962WA light earthquake with magnitude 4.5 (ml/mb) was detected on Tuesday, 161 km SSW of Hihifo, Tonga (100 miles). Exact location of earthquake, longitude -174.4962 West, latitude -17.2459 South, depth = 219.306 km. The 4.5-magnitude earthquake was detected at 19:56:45 / 7:56 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 23/09/25 / 2025-09-23 19:56:45 / September 23, 2025 @ 7:56 pm UTC/GMT. The epicenter was at a depth of 219.306 km (136 miles). Event ids that are associated to the earthquake: us6000rcdy. Id of event: us6000rcdy.

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

Did you feel anything?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 161 km SSW of Hihifo, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -174.4962° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -17.2459° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 219.306 km Depth of the event in kilometers.
Place 161 km SSW 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 2025-09-23 19:56:45 Time when the event occurred. UTC/GMT
Updated 2025-09-29 17:38:46 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 312 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 26 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 4.225 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.24 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 115 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 us6000rcdy Id of event.
Event Code 6000rcdy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rcdy, A comma-separated list of event ids that are associated to an event.

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