In the North Pacific Ocean 192 kilometer from Petropavlovsk-Kamchatsky, Russia, a shallow and significant Magnitude 5.1 earthquake occurred in the evening of Wednesday October 29th, 2025.
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Earthquake Summary
This earthquake hit under water in the North Pacific Ocean, 160 kilometers (99 mi) off the coast of Russia, 192 kilometer south-southeast of Petropavlovsk-Kamchatsky in Kamchatka. The center of this earthquake had a very shallow depth of 10 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.
| Date and Time: | Oct 29, 2025 18:56 (Kamchatka Time) - Oct 29, 2025 06:56 Universal Time. |
|---|---|
| Location: | 192 km SSE of Petropavlovsk-Kamchatsky, Kamchatka, Russia. Coordinates 51°28'35"N 159°43'51"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 5.1 Detected by 99 stations. Maximum Error Range ±0.057 . |
| Depth: | 10 km (6 mi) A very shallow 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 185 kilometer (115 mi) south-southeast of Vilyuchinsk.
Overview of nearby places
| Distance | Place |
|---|---|
| 185 km (115 mi) NNW from epicenter |
Vilyuchinsk Kamchatka, Russia. |
| 192 km (119 mi) NNW from epicenter |
Petropavlovsk-Kamchatsky Kamchatka, Russia. |
| 211 km (131 mi) NNW from epicenter |
Yelizovo Kamchatka, Russia. |
7 Aftershocks detected
Since this main shock, 7 smaller aftershocks were detected. Just 2 days after this main shock, an earthquake measuring MAG-4.9 was detected 23 km (14 mi) west-northwest of this earthquake.
This main shock was prefaced by 5 smaller foreshocks. A 4.8 magnitude earthquake hit 5 hrs earlier nearby.
Overview of foreshocks and aftershocks
| Classification | Magnitude | When | Where |
|---|---|---|---|
| Foreshock | M 4.6 |
3 days earlier Oct 27, 2025 04:23 (Kamchatka Time) | 79 km (49 mi) WNW from Main Shock. |
| Foreshock | M 4.7 |
2 days earlier Oct 27, 2025 21:56 (Kamchatka Time) | 99 km (62 mi) SSE from Main Shock. |
| Foreshock | M 4.5 |
1 day earlier Oct 28, 2025 11:17 (Kamchatka Time) | 34 km (21 mi) SSE from Main Shock. |
| Foreshock | M 4.3 |
23 hrs earlier Oct 28, 2025 20:08 (Kamchatka Time) | 11 km (7 mi) ENE from Main Shock. |
| Foreshock | M 4.8 |
5 hrs earlier Oct 29, 2025 14:17 (Kamchatka Time) | 87 km (54 mi) NNE from Main Shock. |
| Main Shock This Earthquake |
M 5.1 |
Oct 29, 2025 18:56 (Kamchatka Time) | - |
| Aftershock | M 4.5 |
15 hrs later Oct 30, 2025 10:25 (Kamchatka Time) | 16 km (10 mi) S from Main Shock. |
| Aftershock | M 4.7 |
19 hrs later Oct 30, 2025 14:23 (Kamchatka Time) | 77 km (48 mi) SSW from Main Shock. |
| Aftershock | M 4.6 |
20 hrs later Oct 30, 2025 14:39 (Kamchatka Time) | 68 km (42 mi) SW from Main Shock. |
| Aftershock | M 4.9 |
1 day later Oct 30, 2025 22:22 (Kamchatka Time) | 8 km (5 mi) NW from Main Shock. |
| Aftershock | M 4.5 |
1 day later Oct 31, 2025 03:45 (Kamchatka Time) | 76 km (47 mi) WNW from Main Shock. |
| Aftershock | M 4.9 |
2 days later Oct 31, 2025 20:57 (Kamchatka Time) | 23 km (14 mi) WNW from Main Shock. |
| Aftershock | M 4.4 |
2 days later Nov 1, 2025 00:03 (Kamchatka Time) | 96 km (59 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.
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 28th, 2025, when a 5.7 magnitude earthquake hit 205 km (127 mi) further southwest. An even stronger magnitude 8.8 earthquake struck on July 29th, 2025.
In total, 274 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 13 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 10 km (6 mi). Earthquakes this shallow could trigger a tsunami. |
Sources
Last updated 09/11/25 08:08 (). As more information on this earthquake becomes available this article will be updated. This article is automatically composed based on data originating from multiple sources.
- US Geographic Society (USGS): Earthquake us6000rk4j
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20251029_0000149
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
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