Light earthquake, 4 mag has occurred near Motomiya in Japan

Posted by admin on December 18, 2025 0 Comments

A light earthquake magnitude 4 (ml/mb) strikes 4 kilometers (2 miles) from Motomiya in Japan on Saturday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 29/11/25 / 2025-11-29 12:23:11 / November 29, 2025 @ 12:23 pm UTC/GMT. The 4-magnitude earthquake has occurred at 12:23:11 / 12:23 pm (local time epicenter). The epicenter was at a depth of 113.547 km (71 miles). Event ids that are associated to the earthquake: us6000rvgz. Id of event: us6000rvgz. Exact location of earthquake, 140.3752° East, 37.4761° North, depth 113.547 km.

Epicenter of the earthquake was 65 km (41 miles) from Iwaki (c. 357 300 pop), 8 km (5 miles) from Kōriyama (c. 340 600 pop), 32 km (20 miles) from Fukushima-shi (c. 294 200 pop), 85 km (53 miles) from Yamagata-shi (c. 254 500 pop), 53 km (33 miles) from Yonezawa (c. 94 500 pop), 21 km (13 miles) from Sukagawa (c. 68 800 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Takahagi, Yamagata-shi, Yaita. Nearby country/countries that might be effected, Japan (c. 127 288 000 pop).

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

Did you feel anything?

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: 4 km SSW of Motomiya, Japan.

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	140.3752° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	37.4761° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	113.547 km	Depth of the event in kilometers.
Place	4 km SSW of Motomiya, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-11-29 12:23:11	Time when the event occurred. UTC/GMT
Updated	2025-12-18 07:21:32	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	36	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.969	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.71 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	us6000rvgz	Id of event.
Event Code	6000rvgz	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rvgz,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4 mag has occurred near Motomiya in Japan

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