Light earthquake, 4 mag was detected near Iwanai in Japan

A light earthquake magnitude 4 (ml/mb) has occurred on Sunday, 122 km WNW of Iwanai, Japan (76 miles). The epicenter was at a depth of 222.06 km (138 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 04:11:30 / 4:11 am (local time epicenter). Id of earthquake: us10008q5f. Event ids that are associated: us10008q5f. Global date and time of event UTC/GMT: 06/05/17 / 2017-05-06 19:11:30 / May 6, 2017 @ 7:11 pm. Exact location of event, depth 222.06 km, 139.0424° East, 43.2181° North.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days seven 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. There are an estimated 13,000 light earthquakes in the world each year.

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Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 122 km WNW of Iwanai, Japan.

Iwanai Japan

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	139.0424° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	43.2181° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	222.06 km	Depth of the event in kilometers.
Place	122km WNW of Iwanai, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2017-05-06 19:11:30	Time when the event occurred. UTC/GMT
Updated	2017-05-06 21:39:45	Time when the event was most recently updated. UTC/GMT
Timezone offset	540	Timezone offset from UTC in minutes at the event epicenter.
Felt		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	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	2.729	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.69 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	43	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	us10008q5f	Id of event.
Event Code	10008q5f	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us10008q5f,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4 mag was detected near Iwanai in Japan

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