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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.1 mag, Bonin Islands, Japan region

Posted by admin on October 14, 2025 0 Comments

Earthquake location 28.0704S, 139.5489WA light earthquake with magnitude 4.1 (ml/mb) was reported Bonin Islands, Japan region (0 miles) on Friday. Id of earthquake: us6000rgd4. Event ids that are associated: us6000rgd4. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 486.588 km (302 miles). Exact time and date of event in UTC/GMT: 19/09/25 / 2025-09-19 19:43:34 / September 19, 2025 @ 7:43 pm. The temblor was picked up at 19:43:34 / 7:43 pm (local time epicenter). Exact location, longitude 139.5489° East, latitude 28.0704° North, depth = 486.588 km.

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days four and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: Bonin Islands, Japan region. 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 139.5489° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 28.0704° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 486.588 km Depth of the event in kilometers.
Place Bonin Islands, Japan region Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-09-19 19:43:34 Time when the event occurred. UTC/GMT
Updated 2025-10-14 14:51:41 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 105 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.533 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.74 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 55 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 us6000rgd4 Id of event.
Event Code 6000rgd4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rgd4, A comma-separated list of event ids that are associated to an event.

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