Light earthquake: M4.5 quake has struck near Nichinan in Japan

A light earthquake with magnitude 4.5 (ml/mb) was reported 71 kilometers (44 miles) from Nichinan in Japan on Sunday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us6000rt0a. Ids that are associated to the event: us6000rt0a. The earthquake was roughly at a depth of 33.194 km (21 miles). Exact location of event, depth 33.194 km, 132.1204° East, 31.5969° North. The temblor was picked up at 00:31:41 / 12:31 am (local time epicenter). Global time and date of event 07/12/25 / 2025-12-07 00:31:41 / December 7, 2025 @ 12:31 am UTC/GMT.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Tsuma, Kushima, Takanabe. Epicenter of the earthquake was 75 km (46 miles) from Miyazaki-shi (c. 311 200 pop), 71 km (44 miles) from Nichinan (c. 44 200 pop), 88 km (55 miles) from Tsuma (c. 34 300 pop), 84 km (52 miles) from Takanabe (c. 22 500 pop), 84 km (52 miles) from Kushima (c. 22 100 pop). Close country/countries that might be effected, Japan (c. 127 288 000 pop).

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

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 71 km E of Nichinan, Japan.

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Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	132.1204° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	31.5969° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	33.194 km	Depth of the event in kilometers.
Place	71 km E of Nichinan, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-12-07 00:31:41	Time when the event occurred. UTC/GMT
Updated	2025-12-07 00:47:37	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	312	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	32	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.426	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.18 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	102	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	us6000rt0a	Id of event.
Event Code	6000rt0a	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rt0a,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.5 quake has struck near Nichinan in Japan

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