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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag strikes near Nemuro in Japan


Earthquake location 43.2342S, 146.0537WA light earthquake magnitude 4.5 (ml/mb) strikes 40 kilometers (25 miles) from Nemuro in Japan on Tuesday. The temblor was reported at 22:50:27 / 10:50 pm (local time epicenter). Exact location of earthquake, 146.0537° East, 43.2342° North, depth 63.975 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us6000r0c8. Event ids that are associated: us6000r0c8. The earthquake occurred at a depth of 63.975 km (40 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 12/08/25 / 2025-08-12 22:50:27 / August 12, 2025 @ 10:50 pm.

Nearest cities/city/towns to hypocenter/epicentrum was Yuzhno-Kuril’sk, Shibetsu, Nemuro (min 5000 pop). Event epicenter was 40 km (25 miles) from Nemuro (c. 31 200 pop), 88 km (55 miles) from Shibetsu (c. 21 700 pop), 90 km (56 miles) from Yuzhno-Kuril’sk (c. 6 500 pop). Close country/countries, Japan (c. 127 288 000 pop) (That might be effected).

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

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 40 km ESE of Nemuro, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 146.0537° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 43.2342° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 63.975 km Depth of the event in kilometers.
Place 40 km ESE of Nemuro, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-12 22:50:27 Time when the event occurred. UTC/GMT
Updated 2025-09-03 02:50:29 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 312 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 53 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.46 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.4 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 133 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 us6000r0c8 Id of event.
Event Code 6000r0c8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000r0c8, A comma-separated list of event ids that are associated to an event.

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