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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag was detected near Shiraoi in Japan


Earthquake location 42.6807S, 141.2242WA light earthquake with magnitude 4.3 (ml/mb) was reported 17 kilometers (11 miles) from Shiraoi in Japan on Sunday. All ids that are associated to the event: us6000rkrn. Unique identifier: us6000rkrn. Global time and date of event 12/10/25 / 2025-10-12 06:13:42 / October 12, 2025 @ 6:13 am UTC/GMT. The earthquake was roughly at a depth of 130.202 km (81 miles). Exact location of event, longitude 141.2242 East, latitude 42.6807 North, depth = 130.202 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 06:13:42 / 6:13 am (local time epicenter).

Nearest cities/city/villages to epicentrum/hypocenter was Bibai, Iwamizawa, Yoichi (min 5000 pop). Close country/countries that might be effected, Japan (c. 127 288 000 pop). Event epicenter was 44 km (27 miles) from Sapporo (c. 1 883 000 pop), 31 km (19 miles) from Tomakomai (c. 174 800 pop), 59 km (37 miles) from Otaru (c. 143 800 pop), 54 km (34 miles) from Ebetsu (c. 134 000 pop), 45 km (28 miles) from Muroran (c. 96 200 pop), 38 km (24 miles) from Chitose (c. 92 900 pop).

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

Did you feel the quake?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 17 km NW of Shiraoi, Japan.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 141.2242° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 42.6807° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 130.202 km Depth of the event in kilometers.
Place 17 km NW of Shiraoi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-10-12 06:13:42 Time when the event occurred. UTC/GMT
Updated 2025-11-04 12:54:18 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 284 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 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.58 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.3 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 74 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 us6000rkrn Id of event.
Event Code 6000rkrn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rkrn, A comma-separated list of event ids that are associated to an event.

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