Light earthquake: M4.2 quake has struck near Itoman in Japan

A light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 72 kilometers (45 miles) from Itoman in Japan. Exact time and date of event in UTC/GMT: 22/05/25 / 2025-05-22 06:33:04 / May 22, 2025 @ 6:33 am. The temblor was detected at 06:33:04 / 6:33 am (local time epicenter). Id of earthquake: us6000qi67. Event ids that are associated: us6000qi67. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 55.306 km, 126.977° East, 25.9216° North. The epicenter of the earthquake was roughly 55.306 km (34 miles) below the earth’s surface.

Country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Chatan, Ginowan, Naha-shi (min 5000 pop). Epicenter of the earthquake was 77 km (48 miles) from Naha-shi (c. 300 800 pop), 87 km (54 miles) from Ginowan (c. 91 800 pop), 73 km (45 miles) from Itoman (c. 57 200 pop), 76 km (47 miles) from Tomigusuku (c. 55 700 pop), 90 km (56 miles) from Chatan (c. 27 800 pop).

In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days three and in the last 365 days eighteen earthquakes of magnitude 3.0 or greater that has struck near. 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.

How would you describe the shaking?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 72 km WSW of Itoman, Japan.

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	126.977° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	25.9216° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	55.306 km	Depth of the event in kilometers.
Place	72 km WSW of Itoman, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-05-22 06:33:04	Time when the event occurred. UTC/GMT
Updated	2025-06-10 06:59:31	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	271	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	26	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.476	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.11 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	120	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	us6000qi67	Id of event.
Event Code	6000qi67	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000qi67,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.2 quake has struck near Itoman in Japan

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