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Light earthquake 4.6 mag, 249 km ESE of Onagawa Chō, Japan

Posted by admin on October 7, 2025 0 Comments

Earthquake location 37.6701S, 144.1112WA light earthquake magnitude 4.6 (ml/mb) has struck on Tuesday, 249 km ESE of Onagawa Chō, Japan (155 miles). Id of earthquake: us6000rf8c. Event ids that are associated: us6000rf8c. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Exact location, longitude 144.1112° East, latitude 37.6701° North, depth = 10 km. The 4.6-magnitude earthquake was detected at 01:42:51 / 1:42 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 07/10/25 / 2025-10-07 01:42:51 / October 7, 2025 @ 1:42 am.

Each year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been five, in the last 10 days nine, in the past 30 days eleven and in the last 365 days fifteen earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 249 km ESE of Onagawa Chō, Japan.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 144.1112° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.6701° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 249 km ESE of Onagawa Chō, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-10-07 01:42:51 Time when the event occurred. UTC/GMT
Updated 2025-10-07 01:58:16 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 326 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 45 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.911 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.94 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 134 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 us6000rf8c Id of event.
Event Code 6000rf8c An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rf8c, A comma-separated list of event ids that are associated to an event.

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