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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag was detected near Katsuura in Japan


Earthquake location 34.9902S, 140.2975WA light earthquake with magnitude 4.6 (ml/mb) was detected on Friday, 15 kilometers (9 miles) from Katsuura in Japan. The temblor was detected at 14:05:25 / 2:05 pm (local time epicenter). Exact time and date of earthquake 29/06/18 / 2018-06-29 05:05:25 / June 29, 2018 @ 5:05 am UTC/GMT. The earthquake occurred at a depth of 32.36 km (20 miles) below the earth’s surface. Unique identifier: us2000fxjc. Ids that are associated to the event: us2000fxjc. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude 140.2975 East, latitude 34.9902 North, depth = 32.36 km.

Close country/countries that might be effected, Japan (c. 127 288 000 pop). The epicenter was 95 km (59 miles) from Tokyo (c. 8 336 600 pop), 78 km (49 miles) from Yokohama (c. 3 574 400 pop), 79 km (49 miles) from Kawasaki (c. 1 306 800 pop), 70 km (44 miles) from Chiba (c. 919 700 pop), 83 km (52 miles) from Funabashi (c. 560 700 pop), 95 km (59 miles) from Matsudo (c. 470 300 pop), 66 km (41 miles) from Yokosuka (c. 429 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Machida, Ōiso, Hasaki (min 5000 pop).

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. In the past 24 hours, there have been five, in the last 10 days eight, in the past 30 days fifteen and in the last 365 days fourty-nine earthquakes of magnitude 3.0 or greater that has struck near.

How would you describe the shaking?

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 information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 15 km S of Katsuura, Japan.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 140.2975° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 34.9902° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 32.36 km Depth of the event in kilometers.
Place 15km S of Katsuura, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-06-29 05:05:25 Time when the event occurred. UTC/GMT
Updated 2018-07-18 08:06:13 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 1.767 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 118 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 us2000fxjc Id of event.
Event Code 2000fxjc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000fxjc, A comma-separated list of event ids that are associated to an event.

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