Light earthquake, 4.1 mag strikes near Shima in Japan

A light earthquake with magnitude 4.1 (ml/mb) was detected on Saturday, 39 kilometers (24 miles) from Shima in Japan. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 333.697 km (207 miles). The 4.1-magnitude earthquake was detected at 20:00:11 / 8:00 pm (local time epicenter). Exact location of earthquake, longitude 137.2194 East, latitude 34.1815 North, depth = 333.697 km. All ids that are associated to the event: us7000qw17. Unique identifier: us7000qw17. Exact time and date of event in UTC/GMT: 13/09/25 / 2025-09-13 20:00:11 / September 13, 2025 @ 8:00 pm.

Nearest cities/city/villages to epicentrum/hypocenter was Kariya, Fukuroi, Tsu-shi (min 5000 pop). Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). The epicenter was 74 km (46 miles) from Hamamatsu (c. 605 100 pop), 67 km (41 miles) from Toyohashi (c. 378 400 pop), 86 km (53 miles) from Okazaki (c. 352 400 pop), 87 km (54 miles) from Anjō (c. 178 400 pop), 89 km (55 miles) from Tsu-shi (c. 163 500 pop), 92 km (57 miles) from Kariya (c. 139 200 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days 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.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 39 km ESE of Shima, Japan.

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Parameter	Value	Description
Magnitude	4.1 mb	The magnitude for the event.
Longitude	137.2194° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	34.1815° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	333.697 km	Depth of the event in kilometers.
Place	39 km ESE of Shima, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-09-13 20:00:11	Time when the event occurred. UTC/GMT
Updated	2025-10-10 05:24:01	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	259	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	53	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.176	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.79 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	67	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	us7000qw17	Id of event.
Event Code	7000qw17	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000qw17,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.1 mag strikes near Shima in Japan

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