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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag was detected near Chichi-shima in Japan



Earthquake location 28.7267S, 143.2605WA light earthquake magnitude 4.6 (ml/mb) strikes 209 km NNE of Chichi-shima, Japan (130 miles) on Monday. Exact location, longitude 143.2605° East, latitude 28.7267° North, depth = 10 km. Event ids that are associated to the earthquake: us20008lic. Id of event: us20008lic. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 12/02/17 / 2017-02-12 16:18:06 / February 12, 2017 @ 4:18 pm UTC/GMT. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. The 4.6-magnitude earthquake has occurred at 02:18:06 / 2:18 am (local time epicenter).

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 nineteen earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year.

Questions or comments?

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: 209 km NNE of Chichi-shima, Japan.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 143.2605° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 28.7267° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 209km NNE 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 2017-02-12 16:18:06 Time when the event occurred. UTC/GMT
Updated 2017-03-06 20:49:46 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 326 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 1.883 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 142 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 us20008lic Id of event.
Event Code 20008lic An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20008lic, A comma-separated list of event ids that are associated to an event.

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