Light earthquake, 4 mag strikes near Sakai in Japan

A light earthquake with magnitude 4 (ml/mb) was detected on Monday, 6 kilometers (4 miles) from Sakai in Japan. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 66.087 km (41 miles). Event ids that are associated to the earthquake: us7000qbv6. Id of event: us7000qbv6. Exact location of earthquake, longitude 139.8707 East, latitude 36.1168 North, depth = 66.087 km. Date and time of earthquake in UTC/GMT: 30/06/25 / 2025-06-30 16:13:08 / June 30, 2025 @ 4:13 pm. The 4-magnitude earthquake has occurred at 16:13:08 / 4:13 pm (local time epicenter).

Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Tomioka, Atsugi, Kimitsu (min 5000 pop). The epicenter was 50 km (31 miles) from Tokyo (c. 8 336 600 pop), 77 km (48 miles) from Yokohama (c. 3 574 400 pop), 68 km (42 miles) from Kawasaki (c. 1 306 800 pop), 30 km (19 miles) from Saitama (c. 1 193 400 pop), 34 km (21 miles) from Yono (c. 1 077 700 pop), 61 km (38 miles) from Chiba (c. 919 700 pop).

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

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 6 km ENE of Sakai, Japan. This data comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	139.8707° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	36.1168° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	66.087 km	Depth of the event in kilometers.
Place	6 km ENE of Sakai, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-06-30 16:13:08	Time when the event occurred. UTC/GMT
Updated	2025-07-10 19:05:01	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	246	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	23	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.407	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.74 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	us7000qbv6	Id of event.
Event Code	7000qbv6	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000qbv6,	A comma-separated list of event ids that are associated to an event.

Earthquakes today

Current and latest world earthquakes breaking news, activity and articles today

Light earthquake, 4 mag strikes near Sakai in Japan

Did you feel it?

More information

Leave a ReplyCancel reply

Follow us!

Tsunami videos

Categories

Information