Significant M5.5 AFTERSHOCK struck on Thursday Morning in the Sulawesi Sea 140km from General Santos (The Philippines).

Written by Earthquakelist.org on June 11th, 2026.

In the Sulawesi Sea 140 kilometer from General Santos, The Philippines, a significant M5.5 aftershock occurred in the morning of Thursday June 11th, 2026. Shaking may have been felt by a total of 4 million people.

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Earthquake Summary

This earthquake hit under water in the Sulawesi Sea, 76 kilometers (47 mi) off the coast of The Philippines, 140 kilometer south of General Santos in Soccsksargen. The center of this earthquake had a quite shallow depth of 50 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Jun 11, 2026 09:56AM (Manila Time) - Jun 11, 2026 01:56 Universal Time.
Location:	140 km south of General Santos, Soccsksargen, The Philippines. Coordinates 4°52'40"N 125°26'8"E.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.5 Detected by 76 stations. Maximum Error Range ±0.068 .
Depth:	50 km (31 mi) A quite shallow depth.
Max. Intensity:	V Moderate On the Modified Mercalli Scale.
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.

Roughly 4 million people exposed to shaking

The USGS has published a report estimating the number of people exposed to this earthquake. Acoording to their analysis, roughly 4 million have been exposed to shaking at an MMI level of II or higher.

An estimated 70 people were exposed to level V. At this level, moderate shaking and very light damage can be expected. Intensity level III was experienced by the majority of people (around 3.8 million). In their region, weak shaking and probably no damage can be expected.

People in 2 countries have been exposed to shaking. In Indonesia , around 250 thousand people, with impact levels up to V (moderate shaking, very light damage). Roughly 3.7 million people were exposed to shaking in The Philippines .

Nearby towns and cities

This earthquake may have been felt in The Philippines . The closest significant population center near the earthquake is Glan in Soccsksargen, The Philippines. Glan is located 108 kilometer (67 mi) south of the epicenter. The intensity of shaking and damage in Glan is estimated to be around level IV on the Modified Mercalli Intensity scale (light shaking, likely no damage).

Multiple major population centers exist within 300km of the earthquake that struck today. Davao is located 245 km to the north (intensity unknown, possibly low). General Santos is located 140 km to the north and experienced an intensity of III (weak shaking, probably no damage). Budta is located 281 km to the northwest (intensity unknown, possibly low).

A complete list of nearby places is included below. Estimated intensity data (MMI) sourced from a shake-map published by the US Geographic Survey is shown where available (cities without data probably experienced little impact).

Overview of nearby places

Earthquake Intensity Map

The maximum intensity (MMI Scale) caused by this earthquake is IV. The map below shows in which areas this earthquake was the most and least impactful. It is based on data from the US Geographic Survey.

I Not felt

II Weak

III Weak

IV Light

V Moderate

VI Strong

VII Very Strong

VIII Severe

IX Violent

X Extreme

This is likely an aftershock

This earthquake was an aftershock. A larger mag. 5.7 earthquake struck 27 km (17 mi) northwest in advance of this 5.5 earthquake around 3 days earlier.

Overview of foreshocks and aftershocks

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.

Earthquakes like this happen often in the region

Earthquakes of this strength are very common in the region. In total, 97 earthquakes with a magnitude of 5.5 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 month.

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

Sources

Last updated 11/06/26 12:28 (). This article contains currently available information about the earthquake and is automatically composed. We continue to update this article up to a few days after the earthquake occurred.

1. US Geographic Society (USGS): Earthquake us7000ss57
2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20260611_0000019
3. Geonames.org: World Cities Database
4. Google Maps: Static API
5. Earthquakelist.org: Historic Earthquakes Database

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