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Light earthquake: M4.3 quake has struck near Urakawa in Japan


Earthquake location 41.9491S, 142.5911WA light earthquake magnitude 4.3 (ml/mb) has occurred on Monday, 27 kilometers (17 miles) from Urakawa in Japan. Global date and time of event UTC/GMT: 21/07/25 / 2025-07-21 06:05:53 / July 21, 2025 @ 6:05 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude 142.5911° East, latitude 41.9491° North, depth = 62.566 km. The 4.3-magnitude earthquake was detected at 06:05:53 / 6:05 am (local time epicenter). The earthquake occurred at a depth of 62.566 km (39 miles) below the earth’s surface. Event id: us7000qe7a. Ids that are associated to the earthquake: us7000qe7a.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Shizunai-furukawachō. Nearby country/countries, Japan (c. 127 288 000 pop) (That might be effected). Epicenter of the earthquake was 47 km (29 miles) from Shizunai-furukawachō (c. 22 400 pop).

Each year there are an estimated 13,000 light quakes 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 one, in the last 10 days four, in the past 30 days six and in the last 365 days fifty-six earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel it?

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. 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: 27 km SW of Urakawa, Japan.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 142.5911° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 41.9491° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 62.566 km Depth of the event in kilometers.
Place 27 km SW of Urakawa, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-07-21 06:05:53 Time when the event occurred. UTC/GMT
Updated 2025-07-21 17:59:57 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 68 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.427 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.51 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 107 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 us7000qe7a Id of event.
Event Code 7000qe7a An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qe7a, A comma-separated list of event ids that are associated to an event.

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