Light earthquake, 4.6 mag strikes near Nishinoomote in Japan

A light earthquake magnitude 4.6 (ml/mb) has struck on Thursday, 103 km E of Nishinoomote, Japan (64 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 20/12/17 / 2017-12-20 20:26:55 / December 20, 2017 @ 8:26 pm. All ids that are associated to the event: us1000c0py. Unique identifier: us1000c0py. The 4.6-magnitude earthquake was detected at 05:26:55 / 5:26 am (local time epicenter). The earthquake was roughly at a depth of 10 km (6 miles). Exact location of earthquake, 132.0784° East, 30.6968° North, depth 10 km.

There are an estimated 13,000 light earthquakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been six, in the last 10 days ten, in the past 30 days ten and in the last 365 days twenty-four earthquakes of magnitude 3.0 or greater that have been detected 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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 103 km E of Nishinoomote, Japan.

Japan Nishinoomote

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Parameter	Value	Description
Magnitude	4.6 mb	The magnitude for the event.
Longitude	132.0784° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	30.6968° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	103km E of Nishinoomote, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2017-12-20 20:26:55	Time when the event occurred. UTC/GMT
Updated	2018-01-04 18:20:28	Time when the event was most recently updated. UTC/GMT
Timezone offset	540	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		The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.627	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.89 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	130	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	us1000c0py	Id of event.
Event Code	1000c0py	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us1000c0py,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.6 mag strikes near Nishinoomote in Japan

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