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Light World Earthquakes Magnitude 4-4.9

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

Earthquake location 32.9132S, 139.0877WA light earthquake magnitude 4.2 (ml/mb) has occurred on Friday, 196 km S of Shimoda, Japan (122 miles). Global time and date of event 18/12/20 / 2020-12-18 23:20:06 / December 18, 2020 @ 11:20 pm UTC/GMT. The epicenter was at a depth of 205.41 km (128 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.2-magnitude earthquake was detected at 23:20:06 / 11:20 pm (local time epicenter). Event id: us6000d1x8. Ids that are associated to the earthquake: us6000d1x8. Exact location of earthquake, longitude 139.0877 East, latitude 32.9132 North, depth = 205.41 km.

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

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 196 km S of Shimoda, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 139.0877° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 32.9132° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 205.41 km Depth of the event in kilometers.
Place 196 km S of Shimoda, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-12-18 23:20:06 Time when the event occurred. UTC/GMT
Updated 2020-12-29 04:08:03 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 0.619 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.48 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 114 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 us6000d1x8 Id of event.
Event Code 6000d1x8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000d1x8, A comma-separated list of event ids that are associated to an event.

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