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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag has occurred near Uken in Japan


Earthquake location 28.1613S, 129.1644WA light earthquake magnitude 4.3 (ml/mb) has struck on Wednesday, 16 kilometers (10 miles) from Uken in Japan. Event ids that are associated to the earthquake: us6000quid. Id of event: us6000quid. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.3-magnitude earthquake has occurred at 22:55:34 / 10:55 pm (local time epicenter). Exact location of earthquake, longitude 129.1644 East, latitude 28.1613 North, depth = 58.289 km. Exact time and date of earthquake 23/07/25 / 2025-07-23 22:55:34 / July 23, 2025 @ 10:55 pm UTC/GMT. The epicenter was at a depth of 58.289 km (36 miles).

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Naze. Country/countries that might be effected, Japan (c. 127 288 000 pop). Event epicenter was 39 km (24 miles) from Naze (c. 41 400 pop).

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

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 16 km SSW of Uken, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 129.1644° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 28.1613° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 58.289 km Depth of the event in kilometers.
Place 16 km SSW of Uken, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-07-23 22:55:34 Time when the event occurred. UTC/GMT
Updated 2025-07-26 23:34:43 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 284 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 37 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.54 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.79 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 132 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 us6000quid Id of event.
Event Code 6000quid An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000quid, A comma-separated list of event ids that are associated to an event.

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