Light earthquake, 4.3 mag has occurred near Mutsu in Japan

A light earthquake magnitude 4.3 (ml/mb) has struck on Thursday, 19 kilometers (12 miles) from Mutsu in Japan. Exact location of event, longitude 141.4432 East, latitude 41.2428 North, depth = 77.914 km. The temblor was detected at 21:40:05 / 9:40 pm (local time epicenter). The earthquake was roughly at a depth of 77.914 km (48 miles). Exact time and date of earthquake 11/12/25 / 2025-12-11 21:40:05 / December 11, 2025 @ 9:40 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us6000ru9s. Event ids that are associated: us6000ru9s.

Epicenter of the event was 75 km (47 miles) from Aomori Shi (c. 298 400 pop), 84 km (52 miles) from Hakodate (c. 275 700 pop), 83 km (51 miles) from Hachinohe (c. 239 000 pop), 20 km (12 miles) from Mutsu (c. 49 200 pop), 62 km (39 miles) from Misawa (c. 42 800 pop), 92 km (57 miles) from Kamiiso (c. 38 100 pop). Nearby country/countries, Japan (c. 127 288 000 pop) (That might be effected). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Namioka, Kamiiso, Hakodate.

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

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 19 km ESE of Mutsu, Japan. This data comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	4.3 mb	The magnitude for the event.
Longitude	141.4432° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	41.2428° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	77.914 km	Depth of the event in kilometers.
Place	19 km ESE of Mutsu, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-12-11 21:40:05	Time when the event occurred. UTC/GMT
Updated	2025-12-13 23:15:33	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	26	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.536	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.98 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	163	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	us6000ru9s	Id of event.
Event Code	6000ru9s	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000ru9s,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.3 mag has occurred near Mutsu in Japan

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