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Light earthquake: M4.4 quake has struck near Kawaguchi in Japan

Earthquake location 35.0751S, 140.0975WA light earthquake with magnitude 4.4 (ml/mb) was reported 2 kilometers (1 miles) from Kawaguchi in Japan on Tuesday. Exact location of event, depth 35 km, 140.0975° East, 35.0751° North. Exact time and date of event in UTC/GMT: 21/08/18 / 2018-08-21 14:01:47 / August 21, 2018 @ 2:01 pm. The temblor was detected at 23:01:47 / 11:01 pm (local time epicenter). Id of earthquake: us2000h5gw. Event ids that are associated: us2000h5gw. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 35 km (22 miles).

Epicenter of the earthquake was 78 km (48 miles) from Tokyo (c. 8 336 600 pop), 59 km (36 miles) from Yokohama (c. 3 574 400 pop), 60 km (38 miles) from Kawasaki (c. 1 306 800 pop), 59 km (37 miles) from Chiba (c. 919 700 pop), 69 km (43 miles) from Funabashi (c. 560 700 pop), 81 km (50 miles) from Matsudo (c. 470 300 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Higashimurayama-shi, Koshigaya, Yugawara. Close country/countries, Japan (c. 127 288 000 pop) (That might be effected).

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

Did you feel anything?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 2 km S of Kawaguchi, 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 140.0975° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 35.0751° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 2km S of Kawaguchi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-21 14:01:47 Time when the event occurred. UTC/GMT
Updated 2018-09-03 17:16:28 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 1.623 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.45 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 175 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 us2000h5gw Id of event.
Event Code 2000h5gw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000h5gw, A comma-separated list of event ids that are associated to an event.

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