Light earthquake, 4.8 mag has occurred near Yonakuni in Japan

A light earthquake magnitude 4.8 (ml/mb) has struck on Monday, 93 kilometers (58 miles) from Yonakuni in Japan. Exact time and date of event in UTC/GMT: 08/09/25 / 2025-09-08 05:50:45 / September 8, 2025 @ 5:50 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, 122.533° East, 23.7403° North, depth 10 km. The 4.8-magnitude earthquake was detected at 05:50:45 / 5:50 am (local time epicenter). The epicenter was at a depth of 10 km (6 miles). Event ids that are associated to the earthquake: us7000qunw. Id of event: us7000qunw.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Hualian. Close country/countries, Taiwan (c. 22 894 000 pop) (That might be effected). Epicenter of the earthquake was 98 km (61 miles) from Hualian (c. 350 500 pop).

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

Did you feel the quake?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 93 km SSW of Yonakuni, Japan. This data comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4.8 mb	The magnitude for the event.
Longitude	122.533° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	23.7403° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	93 km SSW of Yonakuni, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-09-08 05:50:45	Time when the event occurred. UTC/GMT
Updated	2025-09-08 06:20:07	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	354	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	67	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.845	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.83 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	80	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	us7000qunw	Id of event.
Event Code	7000qunw	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000qunw,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.8 mag has occurred near Yonakuni in Japan

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