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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag has occurred near Iheya in Japan


Earthquake location 27.2348S, 127.639WA light earthquake magnitude 4.1 (ml/mb) has occurred on Saturday, 40 kilometers (25 miles) from Iheya in Japan. Date and time of earthquake in UTC/GMT: 11/10/25 / 2025-10-11 14:24:22 / October 11, 2025 @ 2:24 pm. Exact location of event, longitude 127.639 East, latitude 27.2348 North, depth = 94.251 km. Id of earthquake: us6000rgkn. Event ids that are associated: us6000rgkn. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 94.251 km (59 miles) below the earth’s surface. The temblor was reported at 14:24:22 / 2:24 pm (local time epicenter).

Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Nago (min 5000 pop). Earthquake epicenter was 77 km (48 miles) from Nago (c. 59 600 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 three, in the past 30 days three and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that was reported nearby.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 40 km NW of Iheya, Japan. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 127.639° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 27.2348° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 94.251 km Depth of the event in kilometers.
Place 40 km NW of Iheya, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-10-11 14:24:22 Time when the event occurred. UTC/GMT
Updated 2025-11-02 14:51:19 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 41 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.691 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.66 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 72 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 us6000rgkn Id of event.
Event Code 6000rgkn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rgkn, A comma-separated list of event ids that are associated to an event.

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