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Major earthquake 7.8 mag, 145 km E of Petropavlovsk-Kamchatsky, Russia


Earthquake location 53S, 160.8WA major earthquake with magnitude 7.8 (ml/mb) was detected on Thursday, 145 kilometers (90 miles) from Petropavlovsk-Kamchatsky in Russia. Event id: at00t2ssp5. Ids that are associated to the earthquake: pt25261001, at00t2ssp5. A tsunami warning has been issued near Petropavlovsk-Kamchatsky in Russia (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, 160.8° East, 53° North, depth 10 km. Global date and time of event UTC/GMT: 18/09/25 / 2025-09-18 18:58:17 / September 18, 2025 @ 6:58 pm. The temblor was detected at 18:58:17 / 6:58 pm (local time epicenter). The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Yelizovo, Vilyuchinsk, Petropavlovsk-Kamchatsky. Earthquake epicenter was 144 km (89 miles) from Petropavlovsk-Kamchatsky (c. 187 300 pop), 163 km (101 miles) from Yelizovo (c. 40 700 pop), 161 km (100 miles) from Vilyuchinsk (c. 25 200 pop). Nearby country/countries that might be effected, Russia (c. 140 702 000 pop).

In the past 24 hours, there have been one, in the last 10 days twenty, in the past 30 days sixty-one and in the last 365 days nine hundred and thirty-one earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 15 major earthquakes in the world. Earthquakes 7.0 to 7.9 may cause serious damage.

Questions or comments?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 145 km E of Petropavlovsk-Kamchatsky, Russia.

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More information

Parameter Value Description
Magnitude 7.8 mb The magnitude for the event.
Longitude 160.8° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 53° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 145 km E of Petropavlovsk-Kamchatsky, Russia Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-09-18 18:58:17 Time when the event occurred. UTC/GMT
Updated 2025-09-18 19:07:38 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 1 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 936 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,pt,at, A comma-separated list of network contributors.
Number of Stations Used 99 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.170505 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.2 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 122.399990208 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type Mi The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID at00t2ssp5 Id of event.
Event Code 00t2ssp5 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pt25261001,at00t2ssp5, A comma-separated list of event ids that are associated to an event.

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