Light earthquake: M4.1 quake has struck near Miyako in Japan

A light earthquake magnitude 4.1 (ml/mb) has struck on Sunday, 11 kilometers (7 miles) from Miyako in Japan. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us7000pz02. Ids that are associated to the event: us7000pz02. Global date and time of event UTC/GMT: 27/04/25 / 2025-04-27 08:39:28 / April 27, 2025 @ 8:39 am. Exact location of earthquake, 141.9463° East, 39.7461° North, depth 73.866 km. The temblor was detected at 08:39:28 / 8:39 am (local time epicenter). The earthquake occurred at a depth of 73.866 km (46 miles).

Epicenter of the earthquake was 68 km (42 miles) from Morioka-shi (c. 295 200 pop), 88 km (55 miles) from Kitakami (c. 93 900 pop), 82 km (51 miles) from Hanamaki (c. 73 100 pop), 11 km (7 miles) from Miyako (c. 51 700 pop), 53 km (33 miles) from Kamaishi (c. 43 100 pop), 78 km (48 miles) from Ōfunato (c. 35 400 pop). Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). Closest city/cities/towns to epicentrum/hypocenter was Kitakami, Shizukuishi, Hanamaki (min 5000 pop).

In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days four and in the last 365 days fourty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. 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.

Questions or comments?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 11 km N of Miyako, Japan. This information comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4.1 mb	The magnitude for the event.
Longitude	141.9463° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	39.7461° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	73.866 km	Depth of the event in kilometers.
Place	11 km N of Miyako, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-27 08:39:28	Time when the event occurred. UTC/GMT
Updated	2025-05-16 06:17:26	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	259	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	21	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.241	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.47 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	156	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	us7000pz02	Id of event.
Event Code	7000pz02	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000pz02,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.1 quake has struck near Miyako in Japan

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