Light earthquake, 4.6 mag strikes near Hachijo-jima in Japan

A light earthquake with magnitude 4.6 (ml/mb) was detected on Tuesday, 241 km SSW of Hachijo-jima, Japan (150 miles). Global date and time of event UTC/GMT: 21/09/15 / 2015-09-21 20:56:58 / September 21, 2015 @ 8:56 pm. Exact location of earthquake, longitude 139.2734 East, latitude 30.9563 North, depth = 18.11 km. Unique identifier: us20003mkr. Ids that are associated to the event: us20003mkr. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 18.11 km (11 miles). The 4.6-magnitude earthquake has occurred at 05:56:58 / 5:56 am (local time epicenter).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days eleven earthquakes of magnitude 3.0 or greater that was reported 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.

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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 information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 241 km SSW of Hachijo-jima, Japan.

Hachijo-jima Japan

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Parameter	Value	Description
Magnitude	4.6 mb	The magnitude for the event.
Longitude	139.2734° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	30.9563° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	18.11 km	Depth of the event in kilometers.
Place	241km SSW of Hachijo-jima, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2015-09-21 20:56:58	Time when the event occurred. UTC/GMT
Updated	2015-09-21 21:23:45	Time when the event was most recently updated. UTC/GMT
Timezone offset	540	Timezone offset from UTC in minutes at the event epicenter.
Felt	0	The total number of felt reports
CDI	1	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	2.201	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.86 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	107	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	us20003mkr	Id of event.
Event Code	20003mkr	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us20003mkr,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.6 mag strikes near Hachijo-jima in Japan

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