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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag has occurred near Itoigawa in Japan

Earthquake location 37.5923S, 137.5684WA light earthquake with magnitude 4.2 (ml/mb) was reported 66 kilometers (41 miles) from Itoigawa in Japan on Monday. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. All ids that are associated to the event: us6000n9j2. Unique identifier: us6000n9j2. Exact location of event, longitude 137.5684 East, latitude 37.5923 North, depth = 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 03:32:28 / 3:32 am (local time epicenter). Global date and time of event UTC/GMT: 01/07/24 / 2024-07-01 03:32:28 / July 1, 2024 @ 3:32 am.

Closest city/cities/towns to epicentrum/hypocenter was Kashiwazaki, Uozu, Arai (min 5000 pop). Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). Event epicenter was 77 km (48 miles) from Jōetsu (c. 204 100 pop), 90 km (56 miles) from Kashiwazaki (c. 86 200 pop), 89 km (56 miles) from Uozu (c. 45 800 pop), 80 km (50 miles) from Nanao (c. 45 300 pop), 67 km (42 miles) from Itoigawa (c. 30 900 pop), 73 km (45 miles) from Nyūzen (c. 27 600 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days five and in the last 365 days six earthquakes of magnitude 3.0 or greater that have been detected 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.

Questions or comments?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 66 km NNW of Itoigawa, Japan. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 137.5684° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.5923° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 66 km NNW of Itoigawa, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2024-07-01 03:32:28 Time when the event occurred. UTC/GMT
Updated 2024-07-07 23:00:20 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 27 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.162 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.33 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 114 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 us6000n9j2 Id of event.
Event Code 6000n9j2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000n9j2, A comma-separated list of event ids that are associated to an event.

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