Moderate earthquake, 5.7 mag strikes near Ōfunato in Japan

A moderate earthquake magnitude 5.7 (ml/mb) strikes 51 kilometers (32 miles) from Ōfunato in Japan on Thursday. Event ids that are associated to the earthquake: us6000r2uz. Id of event: us6000r2uz. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude 142.0883° East, latitude 38.7089° North, depth = 50.018 km. Exact time and date of event in UTC/GMT: 21/08/25 / 2025-08-21 22:34:45 / August 21, 2025 @ 10:34 pm. The earthquake occurred at a depth of 50.018 km (31 miles) below the earth’s surface. The 5.7-magnitude earthquake was detected at 22:34:45 / 10:34 pm (local time epicenter).

Country/countries that might be effected, Japan (c. 127 288 000 pop). Epicenter of the earthquake was 76 km (47 miles) from Ishinomaki (c. 117 200 pop), 105 km (66 miles) from Kitakami (c. 93 900 pop), 100 km (62 miles) from Furukawa (c. 76 300 pop), 113 km (70 miles) from Hanamaki (c. 73 100 pop), 86 km (53 miles) from Ichinoseki (c. 63 000 pop), 95 km (59 miles) from Mizusawa (c. 61 300 pop), 102 km (63 miles) from Shiogama (c. 59 500 pop), 105 km (65 miles) from Miyako (c. 51 700 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Hanamaki, Tomiya, Rifu.

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. Each year there are an estimated 1320 moderate quakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days fourty-seven earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. 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: 51 km SE of Ōfunato, Japan.

More information

Parameter	Value	Description
Magnitude	5.7 mb	The magnitude for the event.
Longitude	142.0883° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	38.7089° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	50.018 km	Depth of the event in kilometers.
Place	51 km SE of Ōfunato, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-08-21 22:34:45	Time when the event occurred. UTC/GMT
Updated	2025-08-21 22:54:38	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	1	The total number of felt reports
CDI	3.1	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	500	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	79	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.223	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.91 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	97	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mww	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us6000r2uz	Id of event.
Event Code	6000r2uz	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000r2uz,	A comma-separated list of event ids that are associated to an event.

Parameter

Value

Description

Magnitude

5.7 mb

The magnitude for the event.

Longitude

142.0883° East

Decimal degrees longitude. Negative values for western longitudes.

Latitude

38.7089° North

Decimal degrees latitude. Negative values for southern latitudes.

Depth

50.018 km

Depth of the event in kilometers.

Place

51 km SE of Ōfunato, Japan

Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.

Time

2025-08-21 22:34:45

Time when the event occurred. UTC/GMT

Updated

2025-08-21 22:54:38

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

3.1

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

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

500

A number describing how significant the event is. Larger numbers indicate a more significant event.

Network

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

The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.

Horizontal Distance

2.223

Horizontal distance from the epicenter to the nearest station (in degrees).

Root Mean Square

0.91 sec

The root-mean-square (RMS) travel time residual, in sec, using all weights.

Azimuthal Gap

The largest azimuthal gap between azimuthally adjacent stations (in degrees).

Magnitude Type

mww

The method or algorithm used to calculate the preferred magnitude for the event.

Event Type

earthquake

Type of seismic event.

Event ID

us6000r2uz

Id of event.

Event Code

6000r2uz

An identifying code assigned by, and unique from, the corresponding source for the event.

Event IDS

,us6000r2uz,

A comma-separated list of event ids that are associated to an event.

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Moderate earthquake, 5.7 mag strikes near Ōfunato in Japan

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