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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 75 km N of Tatsugō, Japan


Earthquake location 29.1271S, 129.6342WA light earthquake magnitude 4.2 (ml/mb) has struck on Monday, 75 kilometers (47 miles) from Tatsugō in Japan. Global date and time of event UTC/GMT: 23/06/25 / 2025-06-23 07:56:31 / June 23, 2025 @ 7:56 am. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Exact location of earthquake, longitude 129.6342 East, latitude 29.1271 North, depth = 10 km. All ids that are associated to the event: us7000qapf. Unique identifier: us7000qapf. The 4.2-magnitude earthquake has occurred at 07:56:31 / 7:56 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Epicenter of the earthquake was 86 km (53 miles) from Naze (c. 41 400 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Naze. Nearby country/countries that might be effected, Japan (c. 127 288 000 pop).

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

Did you feel it?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 75 km N of Tatsugō, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 129.6342° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 29.1271° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 75 km N 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 07:56:31 Time when the event occurred. UTC/GMT
Updated 2025-07-17 16:36:55 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 29 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.477 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.39 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 113 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 us7000qapf Id of event.
Event Code 7000qapf An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qapf, A comma-separated list of event ids that are associated to an event.

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