Shallow M5.1 Earthquake hit in the North Pacific Ocean 198km from Dededo Village (Guam) on Thursday Evening.

Written by Earthquakelist.org on September 10th, 2026. Last updated October 7th, 2026.

A shallow and significant M5.1 earthquake struck in the North Pacific Ocean 198 kilometer from Dededo Village, Guam in the evening of Thursday September 10th, 2026. Such earthquakes in regions like this usually have a minimal impact on people and the economy.

Earthquake Summary

This earthquake hit under water in the North Pacific Ocean, 165 kilometers (102 mi) off the coast of Guam, 198 kilometer southwest of Dededo Village in Dededo. 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:	Sep 10, 2026 23:28 (Guam Time) - Sep 10, 2026 13:28 Universal Time.
Location:	198 km SW of Dededo Village, Dededo, Guam. Coordinates 12°2'10"N 143°49'44"E.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.1 Detected by 15 stations. Maximum Error Range ±0.08 .
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.

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 90% likelyhood of between 0 and 1 fatalities.

The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 90% likelyhood of between 0 and 1 million US Dollars in economic damage and impact.

Not many people felt this earthquake

All exposure to shaking was within the borders of Guam .

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

Nearby towns and cities

This earthquake may have been felt in Guam . Located 188 kilometer (117 mi) southwest of the epicenter of this earthquake, Guam Government House (Hagatna, Guam) is the nearest significant population center.

A complete list of nearby places is included below.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place
188 km (117 mi) NE from epicenter	Guam Government House Hagatna, Guam.
189 km (117 mi) NE from epicenter	Mangilao Village Mangilao, Guam.
189 km (117 mi) NE from epicenter	Hagåtña Hagatna, Guam.
192 km (119 mi) NE from epicenter	Tamuning Tamuning, Guam.
192 km (119 mi) NE from epicenter	Tamuning-Tumon-Harmon Village Tamuning, Guam.
198 km (123 mi) NE from epicenter	Dededo Village Dededo, Guam.
203 km (126 mi) NE from epicenter	Yigo Village Yigo, Guam.

Earthquake Intensity Map

The graph below overlays a map of the region around the epicenter with earthquake intensity data provided by the US Geographic Survey. The highest intensity level detected for this earthquake is 0.

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.

Aftershocks detected

Since this main shock, 1 smaller aftershock was detected. At a distance of 13 km (8 mi) south-east of this earthquake, an aftershock struck 7 mins later. It measured a magnitude of 4.7

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 5.1	Sep 10, 2026 23:28 (Guam Time)	-
Aftershock	M 4.7	7 mins later Sep 10, 2026 23:35 (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.

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 February 12th, 2026, when a 5.4 magnitude earthquake hit 230 km (143 mi) further north-east. An even stronger magnitude 6 earthquake struck on November 4th, 2025.

In total, 63 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 2 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 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 07/10/26 00:58 (). 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.