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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag was detected near Chichi-shima in Japan

Earthquake location 27.7264S, 139.8442WA light earthquake magnitude 4.3 (ml/mb) has occurred on Tuesday, 245 km WNW of Chichi-shima, Japan (152 miles). The earthquake occurred at a depth of 486.07 km (302 miles) below the earth’s surface. All ids that are associated to the event: us2000hdgi. Unique identifier: us2000hdgi. Exact time and date of event in UTC/GMT: 04/09/18 / 2018-09-04 14:04:34 / September 4, 2018 @ 2:04 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 23:04:34 / 11:04 pm (local time epicenter). Exact location of event, longitude 139.8442 East, latitude 27.7264 North, depth = 486.07 km.

Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been one, in the last 10 days four, in the past 30 days six and in the last 365 days twenty-one 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.

How would you describe the shaking?

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 WNW of Chichi-shima, Japan.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 139.8442° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 27.7264° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 486.07 km Depth of the event in kilometers.
Place 245km WNW 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 2018-09-04 14:04:34 Time when the event occurred. UTC/GMT
Updated 2018-09-18 20:58:26 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 284 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 2.173 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.46 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 50 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 us2000hdgi Id of event.
Event Code 2000hdgi An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000hdgi, A comma-separated list of event ids that are associated to an event.

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