A significant Magnitude 5.1 earthquake struck in the North Pacific Ocean 58 kilometer from Petropavlovsk-Kamchatsky, Russia around noon of Wednesday October 22nd, 2025.
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Earthquake Summary
This earthquake hit under water in the North Pacific Ocean, 44 kilometers (27 mi) off the coast of Russia, 58 kilometer south-southeast of Petropavlovsk-Kamchatsky in Kamchatka. The center of this earthquake had an intermediate depth of 74 km.
| Date and Time: | Oct 22, 2025 11:37 (Kamchatka Time) - Oct 21, 2025 23:37 Universal Time. |
|---|---|
| Location: | 58 km SSE of Petropavlovsk-Kamchatsky, Kamchatka, Russia. Coordinates 52°35'46"N 159°0'8"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 5.1 Detected by 8 stations. Maximum Error Range ±0.11 . |
| Depth: | 74 km (46 mi) An intermediate depth. |
| Tsunami Risk: | Low tsunami risk Earthquakes under MAG-6.5 do not usually cause tsunami's. Always stay cautious - More info here. |
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 55 kilometer (34 mi) south-east of Vilyuchinsk.
Overview of nearby places
| Distance | Place |
|---|---|
| 55 km (34 mi) NW from epicenter |
Vilyuchinsk Kamchatka, Russia. |
| 58 km (36 mi) NNW from epicenter |
Petropavlovsk-Kamchatsky Kamchatka, Russia. |
| 78 km (48 mi) NNW from epicenter |
Yelizovo Kamchatka, Russia. |
4 Aftershocks detected
After this earthquake struck, 4 smaller aftershocks occurred. Just 4 hrs after this main shock, an earthquake measuring MAG-4.4 was detected 77 km (48 mi) south-east of this earthquake.
Before this earthquake struck, 2 smaller foreshocks occurred. Roughly 1 day before this earthquake, a foreshock measuring MAG-4.9 was detected nearby this earthquake.
Overview of foreshocks and aftershocks
| Classification | Magnitude | When | Where |
|---|---|---|---|
| Foreshock | M 4.4 |
2 days earlier Oct 20, 2025 12:56 (Kamchatka Time) | 77 km (48 mi) ENE from Main Shock. |
| Foreshock | M 4.9 |
1 day earlier Oct 21, 2025 10:43 (Kamchatka Time) | 79 km (49 mi) NE from Main Shock. |
| Main Shock This Earthquake |
M 5.1 |
Oct 22, 2025 11:37 (Kamchatka Time) | - |
| Aftershock | M 4.4 |
4 hrs later Oct 22, 2025 15:45 (Kamchatka Time) | 77 km (48 mi) SE from Main Shock. |
| Aftershock | M 4.1 |
2 days later Oct 24, 2025 06:12 (Kamchatka Time) | 67 km (42 mi) ESE from Main Shock. |
| Aftershock | M 4.2 |
2 days later Oct 24, 2025 14:31 (Kamchatka Time) | 86 km (53 mi) SE from Main Shock. |
| Aftershock | M 4.3 |
2 days later Oct 24, 2025 19:44 (Kamchatka Time) | 33 km (21 mi) SE from Main Shock. |
More earthquakes coming?
The risk of aftershocks decreases rapidly over time. Usually, aftershocks are at least one order of magnitude lower than a main shock.
In only six percent of cases, significant earthquakes are followed by a larger main shock, making the current earthquake a foreshock. While the chance of this happening is not so large, it is adviced to maintain cautiousness in the hours and days following a major earthquake.
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 October 19th, 2025, when a 5.2 magnitude earthquake hit 136 km (84 mi) further east. An even stronger magnitude 8.8 earthquake struck on July 29th, 2025.
In total, 255 earthquakes with a magnitude of 5.1 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 14 days.
Low tsunami risk
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 5.1. Earthquakes of this strength are unlikely to trigger a tsunami. |
This earthquake occurred at a depth of of 74 km (46 mi). Earthquakes this shallow could trigger a tsunami. |
Sources
Last updated 09/11/25 01:18 (). 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.
- US Geographic Society (USGS): Earthquake us6000rik5
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20251021_0000309
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
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