Light earthquake, 4.2 mag has occurred near Chichi-shima in Japan

A light earthquake magnitude 4.2 (ml/mb) has occurred on Wednesday, 241 km WNW of Chichi-shima, Japan (150 miles). The earthquake occurred at a depth of 495.21 km (308 miles). Event id: us10008eg8. Ids that are associated to the earthquake: us10008eg8. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 08:59:46 / 8:59 am (local time epicenter). Exact location of earthquake, 139.8725° East, 27.6892° North, depth 495.21 km. Exact time and date of earthquake 04/04/17 / 2017-04-04 23:59:46 / April 4, 2017 @ 11:59 pm UTC/GMT.

Each year there are an estimated 13,000 light earthquakes in the world. 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 fourteen earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel the quake?

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 WNW of Chichi-shima, Japan.

Chichi-shima Japan

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	139.8725° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	27.6892° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	495.21 km	Depth of the event in kilometers.
Place	241km 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	2017-04-04 23:59:46	Time when the event occurred. UTC/GMT
Updated	2017-04-05 00:27:50	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	271	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	2.139	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.53 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	55	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	us10008eg8	Id of event.
Event Code	10008eg8	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us10008eg8,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.2 mag has occurred near Chichi-shima in Japan

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