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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Ozernovskiy in Russia


Earthquake location 50.9043S, 157.4601WA light earthquake magnitude 4.1 (ml/mb) has occurred on Monday, 93 km SE of Ozernovskiy, Russia (58 miles). Unique identifier: us7000qrb3. Ids that are associated to the event: us7000qrb3. Global date and time of event UTC/GMT: 04/08/25 / 2025-08-04 01:00:42 / August 4, 2025 @ 1:00 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude 157.4601 East, latitude 50.9043 North, depth = 69.365 km. The earthquake occurred at a depth of 69.365 km (43 miles). The 4.1-magnitude earthquake has occurred at 01:00:42 / 1:00 am (local time epicenter).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been eighty-five, in the last 10 days three hundred and fourty-one, in the past 30 days three hundred and fourty-one and in the last 365 days three hundred and fifty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

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: 93 km SE of Ozernovskiy, Russia.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 157.4601° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.9043° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 69.365 km Depth of the event in kilometers.
Place 93 km SE of Ozernovskiy, Russia Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-04 01:00:42 Time when the event occurred. UTC/GMT
Updated 2025-08-29 05:09:39 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 41 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.212 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.76 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 134 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 us7000qrb3 Id of event.
Event Code 7000qrb3 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qrb3, A comma-separated list of event ids that are associated to an event.

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