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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.2 quake has struck near Kamaishi in Japan


Earthquake location 38.3529S, 143.566WA light earthquake magnitude 4.2 (ml/mb) has occurred on Saturday, 177 km SE of Kamaishi, Japan (110 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 03:55:49 / 3:55 am (local time epicenter). Exact time and date of earthquake 15/12/17 / 2017-12-15 17:55:49 / December 15, 2017 @ 5:55 pm UTC/GMT. Unique identifier: us1000buib. Ids that are associated to the event: us1000buib. The epicenter was at a depth of 10.88 km (7 miles). Exact location of event, longitude 143.566 East, latitude 38.3529 North, depth = 10.88 km.

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days twenty-five earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Questions or comments?

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 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: 177 km SE of Kamaishi, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 143.566° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.3529° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10.88 km Depth of the event in kilometers.
Place 177km SE of Kamaishi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-12-15 17:55:49 Time when the event occurred. UTC/GMT
Updated 2018-01-13 17:58:18 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 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 2.242 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.19 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 140 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 us1000buib Id of event.
Event Code 1000buib An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000buib, A comma-separated list of event ids that are associated to an event.

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