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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.4 mag, 219 km N of Chichi-shima, Japan

Posted by admin on January 8, 2018 0 Comments

Earthquake location 29.0556S, 142.4658WA light earthquake with magnitude 4.4 (ml/mb) was reported 219 km N of Chichi-shima, Japan (136 miles) on Friday. Event id: us1000c133. Ids that are associated to the earthquake: us1000c133. Exact time and date of event in UTC/GMT: 21/12/17 / 2017-12-21 19:00:39 / December 21, 2017 @ 7:00 pm. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Exact location of earthquake, 142.4658° East, 29.0556° North, depth 10 km. The 4.4-magnitude earthquake was detected at 04:00:39 / 4:00 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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

Did you feel the quake?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 219 km N of Chichi-shima, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 142.4658° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 29.0556° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 219km N 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 2017-12-21 19:00:39 Time when the event occurred. UTC/GMT
Updated 2018-01-08 15:29:22 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 298 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 1.968 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.79 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 153 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 us1000c133 Id of event.
Event Code 1000c133 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000c133, A comma-separated list of event ids that are associated to an event.

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