Light earthquake, 4.5 mag strikes near Honchō in Japan

A light earthquake magnitude 4.5 (ml/mb) has occurred on Saturday, 128 km S of Honchō, Japan (80 miles). Exact location of earthquake, longitude 143.1259 East, latitude 40.9827 North, depth = 37.589 km. The temblor was detected at 17:20:30 / 5:20 pm (local time epicenter). Exact time and date of earthquake 05/04/25 / 2025-04-05 17:20:30 / April 5, 2025 @ 5:20 pm UTC/GMT. All ids that are associated to the event: us6000q4a2. Unique identifier: us6000q4a2. 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 37.589 km (23 miles).

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

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Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 128 km S of Honchō, Japan.

Honchō Japan

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Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	143.1259° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.9827° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	37.589 km	Depth of the event in kilometers.
Place	128 km S of Honchō, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-05 17:20:30	Time when the event occurred. UTC/GMT
Updated	2025-04-05 19:21:20	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	44	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.032	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.38 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	169	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	us6000q4a2	Id of event.
Event Code	6000q4a2	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000q4a2,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.5 mag strikes near Honchō in Japan

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