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

Earthquake location 35.9595S, 138.7627WA light earthquake magnitude 4.4 (ml/mb) strikes 28 kilometers (17 miles) from Chichibu in Japan on Wednesday. Exact location of earthquake, longitude 138.7627 East, latitude 35.9595 North, depth = 155.05 km. The temblor was detected at 09:01:34 / 9:01 am (local time epicenter). The earthquake was roughly at a depth of 155.05 km (96 miles). Event ids that are associated to the earthquake: us2000j1kg. Id of event: us2000j1kg. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 09/01/19 / 2019-01-09 00:01:34 / January 9, 2019 @ 12:01 am.

Earthquake epicenter was 89 km (55 miles) from Tokyo (c. 8 336 600 pop), 81 km (50 miles) from Saitama (c. 1 193 400 pop), 79 km (49 miles) from Yono (c. 1 077 700 pop), 61 km (38 miles) from Hachiōji (c. 579 400 pop), 87 km (54 miles) from Kawaguchi (c. 468 600 pop), 78 km (48 miles) from Machida (c. 400 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Mishima, Nakano, Sakai (min 5000 pop). Close country/countries that might be effected, Japan (c. 127 288 000 pop).

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

How would you describe the shaking?

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. 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: 28 km W of Chichibu, Japan.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 138.7627° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 35.9595° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 155.05 km Depth of the event in kilometers.
Place 28km W of Chichibu, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-01-09 00:01:34 Time when the event occurred. UTC/GMT
Updated 2019-01-09 00:56:43 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 0.739 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.62 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 144 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 us2000j1kg Id of event.
Event Code 2000j1kg An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000j1kg, A comma-separated list of event ids that are associated to an event.

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