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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag was detected near Severo-Kuril’sk in Russia

Posted by admin on September 21, 2025 0 Comments

Earthquake location 50.4992S, 156.6548WA light earthquake with magnitude 4 (ml/mb) was detected on Saturday, 42 km ESE of Severo-Kuril’sk, Russia (26 miles). The temblor was reported at 08:07:15 / 8:07 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 23/08/25 / 2025-08-23 08:07:15 / August 23, 2025 @ 8:07 am. Exact location of earthquake, longitude 156.6548 East, latitude 50.4992 North, depth = 81.998 km. The epicenter of the earthquake was roughly 81.998 km (51 miles) below the earth’s surface. Event id: us7000qwxe. Ids that are associated to the earthquake: us7000qwxe.

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

Did you feel the quake?

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: 42 km ESE of Severo-Kuril’sk, Russia.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 156.6548° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.4992° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 81.998 km Depth of the event in kilometers.
Place 42 km ESE of Severo-Kuril’sk, Russia Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-23 08:07:15 Time when the event occurred. UTC/GMT
Updated 2025-09-21 05:26:37 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 246 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 21 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.692 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.7 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 137 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 us7000qwxe Id of event.
Event Code 7000qwxe An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qwxe, A comma-separated list of event ids that are associated to an event.

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