Light earthquake, 4.6 mag was detected near Honchō in Japan

A light earthquake magnitude 4.6 (ml/mb) has occurred on Tuesday, 90 km S of Honchō, Japan (56 miles). Exact location, longitude 142.8208° East, latitude 41.3181° North, depth = 47.014 km. All ids that are associated to the event: us6000rtki. Unique identifier: us6000rtki. The temblor was reported at 05:15:50 / 5:15 am (local time epicenter). Date and time of earthquake in UTC/GMT: 09/12/25 / 2025-12-09 05:15:50 / December 9, 2025 @ 5:15 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 47.014 km (29 miles).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been ten, in the last 10 days eleven, in the past 30 days thirteen and in the last 365 days fifty-five earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 13,000 light earthquakes in the world each year.

Did you feel the quake?

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: 90 km S of Honchō, Japan.

Honchō Japan

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Parameter	Value	Description
Magnitude	4.6 mb	The magnitude for the event.
Longitude	142.8208° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	41.3181° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	47.014 km	Depth of the event in kilometers.
Place	90 km S of Honchō, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-12-09 05:15:50	Time when the event occurred. UTC/GMT
Updated	2025-12-09 06:27:44	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	326	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	90	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.74	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	134	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	us6000rtki	Id of event.
Event Code	6000rtki	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rtki,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.6 mag was detected near Honchō in Japan

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