Moderate earthquake 5 mag, 239 km N of Chichi-shima, Japan

A moderate earthquake magnitude 5 (ml/mb) strikes 239 km N of Chichi-shima, Japan (149 miles) on Thursday. Id of earthquake: us1000bu2f. Event ids that are associated: us1000bu2f. Global time and date of event 21/12/17 / 2017-12-21 00:40:12 / December 21, 2017 @ 12:40 am UTC/GMT. Exact location of event, longitude 142.5803 East, latitude 29.2234 North, depth = 10.08 km. The temblor was reported at 10:40:12 / 10:40 am (local time epicenter). 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 10.08 km (6 miles).

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. Every year there are an estimated 1320 moderate earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days four and in the last 365 days thirteen earthquakes of magnitude 3.0 or greater that has occurred nearby.

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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. 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: 239 km N of Chichi-shima, Japan.

Chichi-shima Japan

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Parameter	Value	Description
Magnitude	5 mb	The magnitude for the event.
Longitude	142.5803° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	29.2234° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10.08 km	Depth of the event in kilometers.
Place	239km N 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	2017-12-21 00:40:12	Time when the event occurred. UTC/GMT
Updated	2017-12-21 00:57:13	Time when the event was most recently updated. UTC/GMT
Timezone offset	600	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	385	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	2.148	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.67 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	124	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	us1000bu2f	Id of event.
Event Code	1000bu2f	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us1000bu2f,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake 5 mag, 239 km N of Chichi-shima, Japan

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