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

A light earthquake magnitude 4.4 (ml/mb) has struck on Friday, 120 km S of Koshima, Japan (75 miles). Id of earthquake: us7000putf. Event ids that are associated: us7000putf. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 11/04/25 / 2025-04-11 06:09:06 / April 11, 2025 @ 6:09 am UTC/GMT. The earthquake occurred at a depth of 42.682 km (27 miles) below the earth’s surface. Exact location of event, longitude 130.6013 East, latitude 29.1457 North, depth = 42.682 km. The temblor was detected at 06:09:06 / 6:09 am (local time epicenter).

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

Did you feel anything?

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: 120 km S of Koshima, Japan.

Japan Koshima

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Parameter	Value	Description
Magnitude	4.4 mb	The magnitude for the event.
Longitude	130.6013° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	29.1457° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	42.682 km	Depth of the event in kilometers.
Place	120 km S of Koshima, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-11 06:09:06	Time when the event occurred. UTC/GMT
Updated	2025-05-07 10:12:35	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	19	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.359	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.95 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	138	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	us7000putf	Id of event.
Event Code	7000putf	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000putf,	A comma-separated list of event ids that are associated to an event.

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

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