In the early afternoon of Saturday October 10th, 2026, a significant MAG-5.3 earthquake hit in the Philippine Sea 46 kilometer from Dededo Village, Guam. Another country near the epicenter is Northern Mariana Islands.
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Earthquake Summary
This earthquake hit under water in the Philippine Sea, 32 kilometers (20 mi) off the coast of Guam, 46 kilometer north-east of Dededo Village in Dededo. The center of this earthquake had an intermediate depth of 111 km.
| Date and Time: | Oct 10, 2026 13:58 (Guam Time) - Oct 10, 2026 03:58 Universal Time. |
|---|---|
| Location: | 46 km NE of Dededo Village, Dededo, Guam. Coordinates 13°50'35"N 145°5'55"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 5.3 Detected by 74 stations. Maximum Error Range ±0.067 . |
| Depth: | 111 km (69 mi) An intermediate depth. |
| Tsunami Risk: | Tsunami very unlikely Earthquakes under MAG-6.5 at depths deeper than 100km are very unlikely to cause tsunami's. Always stay cautious - More info here. |
Nearby towns and cities
2 countries can be found within 300km of the epicenter of this earthquake: Guam and Northern Mariana Islands .
Yigo Village in Yigo, Guam is the nearest significant place from the epicenter. The earthquake occurred 41 kilometer (25 mi) north-east of Yigo Village.
The table below provides an overview of all places in proximity of today's earthquake.
Overview of nearby places
| Distance | Place |
|---|---|
| 41 km (25 mi) SW from epicenter |
Yigo Village Yigo, Guam. |
| 46 km (29 mi) SW from epicenter |
Dededo Village Dededo, Guam. |
| 52 km (32 mi) SW from epicenter |
Tamuning-Tumon-Harmon Village Tamuning, Guam. |
| 52 km (32 mi) SW from epicenter |
Tamuning Tamuning, Guam. |
| 54 km (34 mi) SW from epicenter |
Mangilao Village Mangilao, Guam. |
| 56 km (35 mi) SW from epicenter |
Hagåtña Hagatna, Guam. |
| 56 km (35 mi) SW from epicenter |
Guam Government House Hagatna, Guam. |
| 168 km (104 mi) NE from epicenter |
Saipan Saipan, Northern Mariana Islands. |
2 Aftershocks detected
After this earthquake struck, 2 smaller aftershocks occurred. At a distance of 13 km (8 mi) south-east of this earthquake, an aftershock struck 2 days later. It measured a magnitude of 4.5
Overview of foreshocks and aftershocks
| Classification | Magnitude | When | Where |
|---|---|---|---|
| Main Shock This Earthquake |
M 5.3 |
Oct 10, 2026 13:58 (Guam Time) | - |
| Aftershock | M 4.1 |
6 mins later Oct 10, 2026 14:04 (Guam Time) | 18 km (11 mi) SE from Main Shock. |
| Aftershock | M 4.5 |
2 days later Oct 12, 2026 05:44 (Guam Time) | 13 km (8 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.
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 September 20th, 2026, when a 5.3 magnitude earthquake hit 121 km (75 mi) further south-east. An even stronger magnitude 6.2 earthquake struck on April 2nd, 2024.
In total, 53 earthquakes with a magnitude of 5.3 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 2 months.
Tsunami very unlikely
For a serious tsunami to occur, earthquakes usually need to have a magnitude of at least 6.5 and occur at a shallow depth of maximum 100km. Neither are the case with this earthquake. However always 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 5.3. Earthquakes of this strength are unlikely to trigger a tsunami. |
Not this earthquake. This earthquake occurred at a depth of 111 km (69 mi). Earthquakes this deep in the earth are unlikely to trigger a tsunami. |
Sources
Last updated 07/11/26 01:18 (). 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 us6000u1cd
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20261010_0000071
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
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