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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.6 quake has struck near Chichi-shima in Japan

Posted by admin on October 27, 2017 0 Comments

Earthquake location 28.6533S, 140.4608WA light earthquake magnitude 4.6 (ml/mb) has occurred on Thursday, 245 km NW of Chichi-shima, Japan (152 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude 140.4608° East, latitude 28.6533° North, depth = 20.56 km. The 4.6-magnitude earthquake was detected at 08:56:13 / 8:56 am (local time epicenter). Unique identifier: us2000b1en. Ids that are associated to the event: us2000b1en. Exact time and date of event in UTC/GMT: 27/09/17 / 2017-09-27 23:56:13 / September 27, 2017 @ 11:56 pm. The earthquake occurred at a depth of 20.56 km (13 miles).

In the past 24 hours, there have been five, in the last 10 days five, in the past 30 days six and in the last 365 days fifteen earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 13,000 light earthquakes in the world each year. 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 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: 245 km NW of Chichi-shima, Japan.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 140.4608° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 28.6533° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.56 km Depth of the event in kilometers.
Place 245km NW 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 2017-09-27 23:56:13 Time when the event occurred. UTC/GMT
Updated 2017-10-27 05:26:03 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 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 2.176 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.87 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 83 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 us2000b1en Id of event.
Event Code 2000b1en An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000b1en, A comma-separated list of event ids that are associated to an event.

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