Light earthquake, 4.5 mag strikes near Shikotan in Russia

A light earthquake with magnitude 4.5 (ml/mb) was detected on Thursday, 68 kilometers (42 miles) from Shikotan in Russia. The 4.5-magnitude earthquake was detected at 02:42:14 / 2:42 am (local time epicenter). Event id: us6000rht3. Ids that are associated to the earthquake: us6000rht3. The epicenter was at a depth of 61.011 km (38 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 25/09/25 / 2025-09-25 02:42:14 / September 25, 2025 @ 2:42 am. Exact location of event, longitude 146.4408 East, latitude 43.2155 North, depth = 61.011 km.

Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Nemuro. Event epicenter was 71 km (44 miles) from Nemuro (c. 31 200 pop).

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 68 km SSW of Shikotan, Russia. This information comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	146.4408° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	43.2155° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	61.011 km	Depth of the event in kilometers.
Place	68 km SSW of Shikotan, Russia	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-09-25 02:42:14	Time when the event occurred. UTC/GMT
Updated	2025-10-18 05:13:07	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	312	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	55	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.704	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.64 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	185	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	us6000rht3	Id of event.
Event Code	6000rht3	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rht3,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.5 mag strikes near Shikotan in Russia

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