Significant M5.9 AFTERSHOCK struck on Saturday Morning in the Maluku Sea 142km from Manado (Indonesia).

Written by Earthquakelist.org on April 4th, 2026. Last updated April 11th, 2026.

A significant MAG-5.9 aftershock struck in the Maluku Sea 142 kilometer from Manado, Indonesia in the morning of Saturday April 4th, 2026. Around 2.9 million people have been exposed to shaking.

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Earthquake Summary

This earthquake hit under water in the Maluku Sea, 101 kilometers (63 mi) off the coast of Indonesia, 142 kilometer east of Manado in North Sulawesi. The center of this earthquake had a quite shallow depth of 49 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Apr 4, 2026 09:35 (Makassar Time) - Apr 4, 2026 01:35 Universal Time.
Location:	142 km east of Manado, North Sulawesi, Indonesia. Coordinates 1°6'39"N 126°4'24"E.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.9 Detected by 163 stations. Maximum Error Range ±0.048 .
Depth:	49 km (30 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 2.9 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 2.9 million have been exposed to shaking at an MMI level of II or higher.

Light shaking and likely no damage may have been experienced by an estimated 450,500 people. At IV, it is the highest MMI level this earthquake has caused. The majority of people (roughly 2.4 million) live in an area exposed to level III, where weak shaking and probably no damage is expected. All exposure to shaking was within the borders of Indonesia .

People	MMI Level	Shaking	Damage
0	I	Not noticable	None
9,460	II	Very weak	None
2,437,000	III	Weak	Probably none
450,500	IV	Light	Likely none
0	V	Moderate	Very light
0	VI	Strong	Light
0	VII	Very Strong	Moderate
0	VIII	Severe	Moderate to heavy
0	IX	Violent	Heavy
0	X	Extreme	Very heavy

Nearby towns and cities

This earthquake may have been felt in Indonesia . Tondano in North Sulawesi, Indonesia is the nearest significant place from the epicenter. The earthquake occurred 131 kilometer (81 mi) east of Tondano. Tondano experienced an earthquake intensity (MMI Scale) of roughly IV. That level implies light shaking and likely no damage.

Multiple large cities are in proximity of today's earthquake. Manado is located 142 km to the west and experienced an intensity of IV (light shaking, likely no damage). Ternate is located 150 km to the east and experienced an intensity of III (weak shaking, probably no damage). Gorontalo is located 341 km to the west (intensity unknown, possibly low).

An overview of nearby towns and cities is available in the overview below. If places don't have intensity data available, it likely means the experienced impact in those places was fairly small.

Overview of nearby places

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 IV.

Shaking reported by 3 people

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 3 people have reported shaking in one place in Indonesia.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

• Manado, Sulawesi Utara, Indonesia: 3 people.

This is likely an aftershock

Approximately 2 days before this earthquake hit, a larger 7.4 magnitude earthquake struck 25 km (15 mi) east of this one. For that reason, we classify the Mag. 5.9 earthquake as an aftershock.

Overview of foreshocks and aftershocks

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.

It's always adviced to be cautious of the risk of a larger shock following any significant earthquake, however this risk is fairly small. There is a roughly 94 percent change that no larger main shock will follow in the days following this 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. In total, 30 earthquakes with a magnitude of 5.9 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 months.

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 11/04/26 01:38 (). 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.

1. US Geographic Society (USGS): Earthquake us6000smgy
2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20260404_0000029
3. Geonames.org: World Cities Database
4. Google Maps: Static API
5. Earthquakelist.org: Historic Earthquakes Database

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