In the North Pacific Ocean 181 kilometer from Petropavlovsk-Kamchatsky, Russia, a shallow Magnitude 4.9 aftershock occurred in the morning of Sunday October 4th, 2026.
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Earthquake Summary
This earthquake hit under water in the North Pacific Ocean, 154 kilometers (96 mi) off the coast of Russia, 181 kilometer south-east 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 4, 2026 08:00 (Kamchatka Time) - Oct 3, 2026 20:00 Universal Time. |
|---|---|
| Location: | 181 km SE of Petropavlovsk-Kamchatsky, Kamchatka, Russia. Coordinates 51°35'12"N 159°44'2"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 4.9 Detected by 10 stations. Maximum Error Range ±0.098 . |
| 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 . Located 175 kilometer (109 mi) south-east of the epicenter of this earthquake, Vilyuchinsk (Kamchatka, Russia) is the nearest significant population center.
Overview of nearby places
| Distance | Place |
|---|---|
| 175 km (109 mi) NW from epicenter |
Vilyuchinsk Kamchatka, Russia. |
| 181 km (112 mi) NW from epicenter |
Petropavlovsk-Kamchatsky Kamchatka, Russia. |
| 200 km (124 mi) NW from epicenter |
Yelizovo Kamchatka, Russia. |
This is likely an aftershock
This earthquake was an aftershock. A larger mag. 5.7 earthquake struck 24 km (15 mi) north in advance of this 4.9 earthquake around 1 day earlier.
Overview of foreshocks and aftershocks
| Classification | Magnitude | When | Where |
|---|---|---|---|
| Foreshock | M 5.0 |
2 days earlier Oct 1, 2026 06:21 (Kamchatka Time) | 73 km (46 mi) NE from Main Shock. |
| Foreshock | M 4.6 |
2 days earlier Oct 1, 2026 06:26 (Kamchatka Time) | 85 km (53 mi) NE from Main Shock. |
| Foreshock | M 4.9 |
2 days earlier Oct 1, 2026 06:36 (Kamchatka Time) | 76 km (47 mi) NE from Main Shock. |
| Foreshock | M 4.5 |
2 days earlier Oct 1, 2026 15:50 (Kamchatka Time) | 75 km (46 mi) E from Main Shock. |
| Main Shock | M 5.7 |
Oct 3, 2026 04:34 (Kamchatka Time) | - |
| Aftershock | M 4.7 |
16 mins later Oct 3, 2026 04:50 (Kamchatka Time) | 53 km (33 mi) SE from Main Shock. |
| Aftershock | M 4.5 |
16 mins later Oct 3, 2026 04:50 (Kamchatka Time) | 37 km (23 mi) S from Main Shock. |
| Aftershock | M 4.6 |
23 mins later Oct 3, 2026 04:57 (Kamchatka Time) | 62 km (39 mi) S from Main Shock. |
| Aftershock | M 4.6 |
23 mins later Oct 3, 2026 04:57 (Kamchatka Time) | 20 km (13 mi) SE from Main Shock. |
| Aftershock | M 4.2 |
30 mins later Oct 3, 2026 05:05 (Kamchatka Time) | 73 km (45 mi) SE from Main Shock. |
| Aftershock | M 4.6 |
31 mins later Oct 3, 2026 05:05 (Kamchatka Time) | 29 km (18 mi) S from Main Shock. |
| Aftershock | M 4.5 |
2 hrs later Oct 3, 2026 06:21 (Kamchatka Time) | 33 km (20 mi) SE from Main Shock. |
| Aftershock | M 5.0 |
2 hrs later Oct 3, 2026 06:25 (Kamchatka Time) | 22 km (14 mi) S from Main Shock. |
| Aftershock | M 4.2 |
3 hrs later Oct 3, 2026 07:11 (Kamchatka Time) | 38 km (23 mi) SE from Main Shock. |
| Aftershock | M 4.7 |
4 hrs later Oct 3, 2026 08:07 (Kamchatka Time) | 38 km (24 mi) SE from Main Shock. |
| Aftershock | M 4.9 |
4 hrs later Oct 3, 2026 08:25 (Kamchatka Time) | 7 km (5 mi) W from Main Shock. |
| Aftershock | M 5.0 |
4 hrs later Oct 3, 2026 08:27 (Kamchatka Time) | 30 km (19 mi) S from Main Shock. |
| Aftershock | M 5.0 |
4 hrs later Oct 3, 2026 08:54 (Kamchatka Time) | 18 km (11 mi) S from Main Shock. |
| Aftershock | M 4.6 |
5 hrs later Oct 3, 2026 09:04 (Kamchatka Time) | 36 km (23 mi) SE from Main Shock. |
| Aftershock | M 4.6 |
5 hrs later Oct 3, 2026 09:14 (Kamchatka Time) | 28 km (17 mi) NW from Main Shock. |
| Aftershock | M 4.7 |
7 hrs later Oct 3, 2026 11:54 (Kamchatka Time) | 17 km (10 mi) SW from Main Shock. |
| Aftershock | M 4.6 |
7 hrs later Oct 3, 2026 11:59 (Kamchatka Time) | 24 km (15 mi) S from Main Shock. |
| Aftershock | M 4.8 |
7 hrs later Oct 3, 2026 12:01 (Kamchatka Time) | 34 km (21 mi) NW from Main Shock. |
| Aftershock | M 4.7 |
8 hrs later Oct 3, 2026 12:20 (Kamchatka Time) | 39 km (24 mi) SE from Main Shock. |
| Aftershock | M 4.3 |
8 hrs later Oct 3, 2026 13:01 (Kamchatka Time) | 78 km (48 mi) SW from Main Shock. |
| Aftershock | M 4.2 |
9 hrs later Oct 3, 2026 13:53 (Kamchatka Time) | 38 km (24 mi) SE from Main Shock. |
| Aftershock | M 5.1 |
10 hrs later Oct 3, 2026 14:59 (Kamchatka Time) | 73 km (45 mi) NE from Main Shock. |
| Aftershock | M 4.5 |
11 hrs later Oct 3, 2026 15:07 (Kamchatka Time) | 41 km (25 mi) E from Main Shock. |
| Aftershock | M 4.5 |
11 hrs later Oct 3, 2026 15:12 (Kamchatka Time) | 27 km (17 mi) S from Main Shock. |
| Aftershock | M 4.6 |
15 hrs later Oct 3, 2026 19:52 (Kamchatka Time) | 16 km (10 mi) S from Main Shock. |
| Aftershock | M 4.3 |
17 hrs later Oct 3, 2026 22:02 (Kamchatka Time) | 76 km (47 mi) E from Main Shock. |
| Aftershock | M 4.5 |
18 hrs later Oct 3, 2026 22:55 (Kamchatka Time) | 46 km (28 mi) S from Main Shock. |
| Aftershock | M 4.4 |
1 day later Oct 4, 2026 07:30 (Kamchatka Time) | 32 km (20 mi) S from Main Shock. |
| Aftershock This Earthquake |
M 4.9 |
1 day later Oct 4, 2026 08:00 (Kamchatka Time) | 24 km (15 mi) S from Main Shock. |
| Aftershock | M 4.4 |
2 days later Oct 4, 2026 16:34 (Kamchatka Time) | 69 km (43 mi) SE from Main Shock. |
| Aftershock | M 4.5 |
2 days later Oct 5, 2026 15:14 (Kamchatka Time) | 59 km (37 mi) S from Main Shock. |
| Aftershock | M 4.3 |
2 days later Oct 5, 2026 15:14 (Kamchatka Time) | 53 km (33 mi) SE from Main Shock. |
More earthquakes coming?
Earthquakes can create aftershocks. These are generally at least 1 magnitude lower than any main shock, and as time passes the chance and strength of aftershocks decreases.
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. In total, 861 earthquakes with a magnitude of 4.9 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 4 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 4.9. 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 23/10/26 22:38 (). 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 us6000tze2
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20261003_0000241
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
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