Light earthquake: M4 quake has struck near Chichi-shima in Japan

A light earthquake magnitude 4 (ml/mb) has struck on Saturday, 183 km WNW of Chichi-shima, Japan (114 miles). Id of earthquake: us20002nli. Event ids that are associated: us20002nli. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 21:46:27 / 9:46 pm (local time epicenter). Exact location of earthquake, longitude 140.5676 East, latitude 27.8498 North, depth = 686.39 km. Global time and date of event 30/05/15 / 2015-05-30 12:46:27 / May 30, 2015 @ 12:46 pm UTC/GMT. The epicenter of the earthquake was roughly 686.39 km (427 miles) below the earth’s surface.

In the past 24 hours, there have been ten, in the last 10 days ten, in the past 30 days ten and in the last 365 days twenty-three earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 13,000 light quakes in the world each year.

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How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking 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: 183 km WNW of Chichi-shima, Japan.

Chichi-shima Japan

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	140.5676° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	27.8498° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	686.39 km	Depth of the event in kilometers.
Place	183km WNW of Chichi-shima, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2015-05-30 12:46:27	Time when the event occurred. UTC/GMT
Updated	2015-06-28 09:46:13	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	246	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	1.621	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.72 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	74	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	us20002nli	Id of event.
Event Code	20002nli	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us20002nli,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4 quake has struck near Chichi-shima in Japan

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