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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag strikes near Tatsugō in Japan


Earthquake location 29.0712S, 129.8683WA light earthquake with magnitude 4.4 (ml/mb) was reported 73 kilometers (45 miles) from Tatsugō in Japan on Monday. The epicenter was at a depth of 10 km (6 miles). Exact location of earthquake, longitude 129.8683 East, latitude 29.0712 North, depth = 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.4-magnitude earthquake has occurred at 15:08:19 / 3:08 pm (local time epicenter). Global date and time of event UTC/GMT: 23/06/25 / 2025-06-23 15:08:19 / June 23, 2025 @ 3:08 pm. Unique identifier: us7000qapv. Ids that are associated to the event: us7000qapv.

Closest city/cities/towns to epicentrum/hypocenter was Naze (min 5000 pop). Close country/countries that might be effected, Japan (c. 127 288 000 pop). The epicenter was 87 km (54 miles) from Naze (c. 41 400 pop).

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

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 73 km NNE of Tatsugō, Japan.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 129.8683° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 29.0712° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 73 km NNE of Tatsugō, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-06-23 15:08:19 Time when the event occurred. UTC/GMT
Updated 2025-07-08 15:56:17 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 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 26 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.482 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.67 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 117 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 us7000qapv Id of event.
Event Code 7000qapv An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qapv, A comma-separated list of event ids that are associated to an event.

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