On Friday Night a Strong M6.1 Earthquake struck in the North Pacific Ocean 153km from Petropavlovsk-Kamchatsky (Russia).

Written by Earthquakelist.org on October 9th, 2025. Last updated December 4th, 2025.

A strong M6.1 earthquake struck in the North Pacific Ocean 153 kilometer from Petropavlovsk-Kamchatsky, Russia in the night of Friday October 10th, 2025. Roughly 270 thousand people may have felt this earthquake.

Earthquake Summary

This earthquake hit under water in the North Pacific Ocean, right off the coast of Russia (9 mi offshore), 153 kilometer south of Petropavlovsk-Kamchatsky in Kamchatka. The center of this earthquake had a quite shallow depth of 64 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Oct 10, 2025 01:28 (Kamchatka Time) - Oct 9, 2025 13:28 Universal Time.
Location:	153 km south of Petropavlovsk-Kamchatsky, Kamchatka, Russia. Coordinates 51°42'58"N 158°12'8"E.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 6.1 Detected by 54 stations. Maximum Error Range ±0.042 .
Depth:	64 km (40 mi) A quite shallow depth.
Max. Intensity:	VI Strong On the Modified Mercalli Scale.
Tsunami Risk:	Low tsunami risk Earthquakes under MAG-6.5 do not usually cause tsunami's. Always stay cautious - More info here.

Minimal impact predicted

Based on scientific estimates by the US Geographic Survey (USGS), the risk of high fatalities for this earthquake is classified at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 fatalities, and a 96% chance that the number of fatalities falls no higher than 10.

The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 million US Dollars in economic damage and impact, and a 96% chance that the economic impact of this earthquake falls no higher than 10 million USD.

Roughly 270 thousand people exposed to shaking

An estimated 270 thousand have been exposed to shaking (An MMI or Modified Mercalli Intensity level II or higher) as a result of this earthquake according scientific estimates published by the USGS.

The highest earthquake impact level for this earthquake is V, which corresponds with moderate shaking and very light damage. Roughly 30 people are expected to be exposed to this level. Intensity level III was experienced by the majority of people (around 220 thousand). In their region, weak shaking and probably no damage can be expected. All exposure to shaking was within the borders of Russia .

People	MMI Level	Shaking	Damage
0	I	Not noticable	None
0	II	Very weak	None
220,800	III	Weak	Probably none
45,440	IV	Light	Likely none
30	V	Moderate	Very light
0	VI	Strong	Light
0	VII	Very Strong	Moderate
0	VIII	Severe	Moderate to heavy
0	IX	Violent	Heavy
0	X	Extreme	Very heavy

Nearby towns and cities

This earthquake may have been felt in Russia . Vilyuchinsk in Kamchatka, Russia is the nearest significant place from the epicenter. The earthquake occurred 136 kilometer (85 mi) south of Vilyuchinsk. Vilyuchinsk experienced an earthquake intensity (MMI Scale) of roughly IV. That level implies light shaking and likely no damage.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place	Intensity (MMI)
136 km (85 mi) N from epicenter	Vilyuchinsk Kamchatka, Russia.	IV Light
153 km (95 mi) N from epicenter	Petropavlovsk-Kamchatsky Kamchatka, Russia.	III Weak
164 km (102 mi) N from epicenter	Yelizovo Kamchatka, Russia.	IV Light

Earthquake Intensity Map

The intensity in shaking and damage by this earthquake is illustrated through the map below. The highest intensity measured for this earthquake is VI.

I Not felt

II Weak

III Weak

IV Light

V Moderate

VI Strong

VII Very Strong

VIII Severe

IX Violent

X Extreme

Earthquake Intensity Map based on Shakemap Data provided by USGS.

3 Aftershocks detected

Since this main shock, 3 smaller aftershocks were detected. Just 2 hrs after this main shock, an earthquake measuring MAG-4.5 was detected 10 km (6 mi) east-southeast of this earthquake.

Overview of foreshocks and aftershocks

Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.
Classification	Magnitude	When	Where
Main Shock This Earthquake	M 6.1	Oct 10, 2025 01:28 (Kamchatka Time)	-
Aftershock	M 4.5	2 hrs later Oct 10, 2025 03:24 (Kamchatka Time)	10 km (6 mi) ESE from Main Shock.
Aftershock	M 4.1	1 day later Oct 11, 2025 04:25 (Kamchatka Time)	16 km (10 mi) N from Main Shock.
Aftershock	M 4.3	2 days later Oct 12, 2025 01:17 (Kamchatka Time)	47 km (29 mi) NE from Main Shock.

More earthquakes coming?

Aftershocks are usually at least 1 order of magnitude less strong than main shocks. The more time passes, the smaller the chance and likely strength of any potential aftershocks.

The chance that a significant earthquake like this one is followed by an even larger earthquake is not so large. On average, scientists estimate a 94% chance that a major earthquake will not be followed by an even larger one. It is still adviced to be aware of this risk

Read: How to Stay Safe during an Earthquake (cdc.gov).

Earthquakes like this happen often in the region

Earthquakes of this strength are very common in the region. This is the strongest earthquake to hit since September 18th, 2025, when a 7.8 magnitude earthquake hit 227 km (141 mi) further north-east. An even stronger magnitude 8.8 earthquake struck on July 29th, 2025.

In total, 16 earthquakes with a magnitude of 6.1 or higher have been registered within 300km (186 mi) of this epicenter in the past 10 years. This comes down to an average of once every 8 months.

Low tsunami risk

DISCLAIMER: We strongly suggest to closely monitor advice from local authorities with regards to tsunami risks. Our analysis is based on automatically collected data from external sources, and these might contain mistakes. In addition, earthquakes can cause landslides that may lead to a tsunami, or be a followed by another, potentially stonger, earthquake.

Based on early data it appears this earthquake was not strong enough (lower than MAG-6.5) to be likely to cause destructive tsunami's. However this earthquake appeared to have hit at a shallow depth under sea, so stay cautious and monitor advice from local authorities.

Tsunami Risk Factors

Factor	Under Sea?	MAG-6.5 or stronger?	Shallow depth?
Explanation	Almost all tsunami's are caused by earthquakes with their epicenter under sea or very near the sea. However stay cautious in coastal areas as earthquakes on land may cause landslides into sea, potentially still causing a local tsunami.	Under MAG 6.5: Very unlikely to cause a tsunami. MAG 6.5 to 7.5: Destructive tsunami's do occur, but are uncommon. Likely to observe small sea level changes. MAG 7.6+: Earthquakes with these magnitudes might produce destructive tsunami's.	Most destructive tsunami's are caused by shallow earthquakes with a depth between 0 and 100km under the surface of the earth. Deeper tsunami's are unlikely to displace to ocean floor.
This Earthquake	This earthquake appears to have struck under the sea.	Not this earthquake. This earthquake had a magnitude of 6.1. Earthquakes of this strength are unlikely to trigger a tsunami.	This earthquake occurred at a depth of of 64 km (40 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 04/12/25 21:28 (). This article is automatically generated based on available data. We keep checking multiple sources for additional information. This article gets updated as new details on this earthquake become available.