Light earthquake, 4.2 mag has occurred near Bonin Islands, Japan region

A light earthquake magnitude 4.2 (ml/mb) strikes Bonin Islands, Japan region (0 miles) on Wednesday. Exact location of earthquake, longitude 139.5746 East, latitude 28.4417 North, depth = 421.007 km. The epicenter was at a depth of 421.007 km (262 miles). Global date and time of event UTC/GMT: 01/10/25 / 2025-10-01 23:02:50 / October 1, 2025 @ 11:02 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us6000re43. Ids that are associated to the event: us6000re43. The temblor was detected at 23:02:50 / 11:02 pm (local time epicenter).

Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days nineteen earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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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: Bonin Islands, Japan region.

Bonin Islands Japan region

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	139.5746° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	28.4417° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	421.007 km	Depth of the event in kilometers.
Place	Bonin Islands, Japan region	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-10-01 23:02:50	Time when the event occurred. UTC/GMT
Updated	2025-10-01 23:24:29	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	271	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	44	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.673	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.62 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	52	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	us6000re43	Id of event.
Event Code	6000re43	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000re43,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.2 mag has occurred near Bonin Islands, Japan region

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