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


Earthquake location 36.0017S, 140.1225WA light earthquake with magnitude 4.2 (ml/mb) was reported 4 kilometers (2 miles) from Ushiku in Japan on Saturday. The epicenter of the earthquake was roughly 74.78 km (46 miles) below the earth’s surface. Unique identifier: us1000dz7l. Ids that are associated to the event: us1000dz7l. Global time and date of event 05/05/18 / 2018-05-05 14:46:41 / May 5, 2018 @ 2:46 pm UTC/GMT. 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 23:46:41 / 11:46 pm (local time epicenter). Exact location of earthquake, longitude 140.1225 East, latitude 36.0017 North, depth = 74.78 km.

Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). The epicenter was 52 km (32 miles) from Tokyo (c. 8 336 600 pop), 75 km (47 miles) from Yokohama (c. 3 574 400 pop), 65 km (40 miles) from Kawasaki (c. 1 306 800 pop), 43 km (27 miles) from Saitama (c. 1 193 400 pop), 46 km (29 miles) from Yono (c. 1 077 700 pop), 44 km (27 miles) from Chiba (c. 919 700 pop). Nearest cities/city/towns to hypocenter/epicentrum was Atsugi, Zushi, Kamakura (min 5000 pop).

In the past 24 hours, there have been one, in the last 10 days four, in the past 30 days five and in the last 365 days sixty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby. 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.

Did you feel anything?

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: 4 km NNW of Ushiku, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 140.1225° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.0017° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 74.78 km Depth of the event in kilometers.
Place 4km NNW of Ushiku, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-05-05 14:46:41 Time when the event occurred. UTC/GMT
Updated 2018-05-06 06:43:39 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 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 1.642 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.88 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 154 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 us1000dz7l Id of event.
Event Code 1000dz7l An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000dz7l, A comma-separated list of event ids that are associated to an event.

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