Light earthquake, 4.3 mag was detected near Nemuro in Japan

A light earthquake with magnitude 4.3 (ml/mb) was detected on Saturday, 77 kilometers (48 miles) from Nemuro in Japan. Exact location of earthquake, longitude 146.3437 East, latitude 42.9051 North, depth = 35.951 km. Unique identifier: us7000q9f9. Ids that are associated to the event: us7000q9f9. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 28/06/25 / 2025-06-28 23:15:23 / June 28, 2025 @ 11:15 pm. The earthquake occurred at a depth of 35.951 km (22 miles) below the earth’s surface. The temblor was detected at 23:15:23 / 11:15 pm (local time epicenter).

Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Nemuro. Event epicenter was 78 km (48 miles) from Nemuro (c. 31 200 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 eight, in the past 30 days nine and in the last 365 days fourty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 13,000 light quakes in the world each year.

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. 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: 77 km SE of Nemuro, Japan.

Japan Nemuro

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Parameter	Value	Description
Magnitude	4.3 mb	The magnitude for the event.
Longitude	146.3437° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	42.9051° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35.951 km	Depth of the event in kilometers.
Place	77 km SE of Nemuro, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-06-28 23:15:23	Time when the event occurred. UTC/GMT
Updated	2025-06-29 01:39:33	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	284	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	36	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.52	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.57 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	155	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	us7000q9f9	Id of event.
Event Code	7000q9f9	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000q9f9,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.3 mag was detected near Nemuro in Japan

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