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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 4 km WSW of Tokamachi, Japan

Earthquake location 37.1172S, 138.7168WA light earthquake magnitude 4.2 (ml/mb) has occurred on Tuesday, 4 kilometers (2 miles) from Tokamachi in Japan. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 01/07/19 / 2019-07-01 15:20:53 / July 1, 2019 @ 3:20 pm. Id of earthquake: us70004hw5. Event ids that are associated: us70004hw5. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude 138.7168 East, latitude 37.1172 North, depth = 10 km. The 4.2-magnitude earthquake has occurred at 00:20:53 / 12:20 am (local time epicenter).

Event epicenter was 91 km (57 miles) from Niigata-shi (c. 505 300 pop), 70 km (44 miles) from Nagano-shi (c. 360 200 pop), 86 km (54 miles) from Maebashi-shi (c. 282 700 pop), 91 km (57 miles) from Takasaki (c. 240 900 pop), 43 km (27 miles) from Jōetsu (c. 204 100 pop), 39 km (24 miles) from Nagaoka (c. 195 300 pop). Nearest cities/city/villages to epicentrum/hypocenter was Suibara, Komoro, Niigata-shi (min 5000 pop). 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 one, in the past 30 days one and in the last 365 days four earthquakes of magnitude 3.0 or greater that has struck near. 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?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 4 km WSW of Tokamachi, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 138.7168° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.1172° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 4km WSW of Tokamachi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-07-01 15:20:53 Time when the event occurred. UTC/GMT
Updated 2019-07-11 14:29:43 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 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 0.703 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.68 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 151 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 us70004hw5 Id of event.
Event Code 70004hw5 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70004hw5, A comma-separated list of event ids that are associated to an event.

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