Light earthquake, 4.8 mag strikes near Ozernovskiy in Russia

A light earthquake with magnitude 4.8 (ml/mb) was detected on Wednesday, 221 km ESE of Ozernovskiy, Russia (137 miles). Exact location, longitude 159.5944° East, latitude 51.0326° North, depth = 10 km. Global time and date of event 30/07/25 / 2025-07-30 04:35:33 / July 30, 2025 @ 4:35 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 10 km (6 miles). Id of earthquake: us6000qwan. Event ids that are associated: us6000qwan. The temblor was reported at 04:35:33 / 4:35 am (local time epicenter).

In the past 24 hours, there have been sixty-seven, in the last 10 days sixty-nine, in the past 30 days sixty-nine and in the last 365 days seventy-four earthquakes of magnitude 3.0 or greater that was reported nearby. 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.

Did you feel it?

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 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: 221 km ESE of Ozernovskiy, Russia.

Ozernovskiy Russia

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Parameter	Value	Description
Magnitude	4.8 mb	The magnitude for the event.
Longitude	159.5944° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.0326° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	221 km ESE 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	2025-07-30 04:35:33	Time when the event occurred. UTC/GMT
Updated	2025-07-31 01:36:05	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	354	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	25	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.077	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.24 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	130	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	us6000qwan	Id of event.
Event Code	6000qwan	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000qwan,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.8 mag strikes near Ozernovskiy in Russia

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