Light earthquake, 4.1 mag strikes near Ōyama in Japan

A light earthquake magnitude 4.1 (ml/mb) has occurred on Tuesday, 145 km S of Ōyama, Japan (90 miles). The earthquake occurred at a depth of 306.62 km (191 miles). The temblor was picked up at 03:56:03 / 3:56 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us6000d7mx. Unique identifier: us6000d7mx. Exact location of event, depth 306.62 km, 138.3179° East, 33.2935° North. Global time and date of event 12/01/21 / 2021-01-12 03:56:03 / January 12, 2021 @ 3:56 am UTC/GMT.

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

Did you feel anything?

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: 145 km S of Ōyama, Japan.

Japan Oyama

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Parameter	Value	Description
Magnitude	4.1 mb	The magnitude for the event.
Longitude	138.3179° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	33.2935° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	306.62 km	Depth of the event in kilometers.
Place	145 km S of Ōyama, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2021-01-12 03:56:03	Time when the event occurred. UTC/GMT
Updated	2021-01-12 05:20:57	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	259	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		The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.266	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.29 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	60	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	us6000d7mx	Id of event.
Event Code	6000d7mx	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000d7mx,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.1 mag strikes near Ōyama in Japan

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