USGS Reports M4.4 Earthquake 129 km West of Ternate, Indonesia
On April 16, 2026, at 19:19 GMT (April 17, 2026, 04:19 AM local time, GMT+9), the United States Geological Survey (USGS) recorded a magnitude 4.4 earthquake in the Northern Molucca Sea region of Indonesia. The event was centered approximately 129 km west of Ternate, North Maluku Province, at coordinates Lat 0.6634 / Lng 126.2286, with a focal depth of 35 km (22 miles). This USGS M4.4 Ternate Indonesia event is being closely monitored by seismologists and earthquake tracking platforms, including GeoQuake.org, which provides real-time global seismic data to the public.
Earthquake Parameters and USGS Data Summary
According to the official USGS report, the key parameters for this seismic event are as follows:
- Magnitude: 4.4 Mw
- Date/Time (UTC): April 16, 2026 β 19:19 GMT
- Local Time: April 17, 2026 β 04:19 AM (GMT+9)
- Depth: 35 km (approximately 22 miles)
- Coordinates: 0.6634Β°N / 126.2286Β°E
- Location: 129 km W of Ternate, Indonesia
- Data Source: USGS Earthquake Hazards Program
The intermediate depth of 35 km places this earthquake within the upper portion of the subducting slab system beneath the Molucca Sea. Events at this depth range are common in the North Maluku region due to the area’s highly complex tectonic configuration. GeoQuake.org automatically indexes all USGS-sourced events and presents them in an easy-to-read, user-friendly format for researchers, emergency managers, and the general public.
Tectonic Setting: Molucca Sea and the Halmahera Slab
The 4.4 earthquake near Ternate, Indonesia occurred within one of the most seismically active and tectonically complex zones on Earth. The Molucca Sea tectonic setting is characterized by the collision of two opposing subduction systems β the Halmahera Arc to the east and the Sangihe Arc to the west β both converging toward the center of the Molucca Sea basin.
The Halmahera Slab and Sunda Plate Interaction
The Halmahera slab is a remnant oceanic plate being consumed from both sides, creating an unusual double-vergent subduction system. The region sits at the intersection of the Sunda plate, the Philippine Sea Plate, and the Pacific Plate, making it one of the most geologically intricate complex plate boundary zones in Indonesia.
This tectonic complexity means that regional seismicity in North Maluku is persistently high, with hundreds of earthquakes recorded each year across a wide range of magnitudes and depths. The Northern Molucca Sea earthquake on April 16, 2026, is consistent with the background seismicity expected in this region. GeoQuake.org maintains a comprehensive historical database of seismic events in## Shaking, Tsunami Risk, and Expected Impact
For a magnitude 4.4 quake Ternate April 2026, impacts are typically limited. Because this event occurred 129 km west of Ternate and at an intermediate depth 35 km, any shaking would likely be weak to light and mainly noticeable offshore or in isolated coastal areas. At the time of reporting, no felt reports reported had been widely published for this earthquake.
Was There a Tsunami Threat?
There was no tsunami statement associated with this event. That is consistent with a moderate offshore earthquake of this size and depth in the Northern Molucca Sea earthquake zone. In most cases, a USGS M4.4 Ternate Indonesia event does not generate significant seafloor displacement, so tsunami potential remains very low.
Damage Potential and Aftershocks
Based on the available parameters, no damage expected is the most reasonable assessment. A 4.4 earthquake Ternate Indonesia is generally below the threshold for structural damage at this offshore distance. In addition, aftershocks unlikely for M4.4 is a fair expectation, although small follow-up events can never be ruled out completely in a complex plate boundary Indonesia setting.
Why This Earthquake Matters for Regional Monitoring
Even when an event is modest, it still contributes important data for seismic analysis. The magnitude 4.4 quake Ternate April 2026 helps scientists better understand stress patterns in the Molucca Sea tectonic setting, especially around the Halmahera slab Sunda plate interaction zone. Each recorded earthquake improves models of fault behavior, slab geometry, and regional seismicity North Maluku.
GeoQuake.org makes these updates easier to follow by collecting, organizing, and presenting earthquake data from trusted scientific sources. For readers tracking Indonesian seismic activity, the platform offers a practical way to monitor earthquake locations, depths, magnitudes, and timing in near real time.
What GeoQuake.org Provides
GeoQuake.org is designed for users who want fast and clear earthquake information without unnecessary complexity. The website highlights:
- real-time global earthquake listings
- USGS-based event summaries
- location, magnitude, and depth details
- regional context for active seismic zones
- easy access to recent earthquake activity worldwide
For those following earthquakes in Indonesia, GeoQuake.org is especially useful because the country sits across multiple active plate boundaries and experiences frequent seismic activity.
Ternate, North Maluku, and the Broader Seismic Context
Ternate lies in a part of eastern Indonesia where earthquakes are common due to continuous tectonic interaction beneath the sea and island arcs. The light shaking possible offshore from this event fits the broader pattern of daily seismicity in the region. While this specific USGS M4.4 Ternate Indonesia earthquake was not large, it is part of the ongoing movement that defines the Molucca Sea tectonic setting.
In practical terms, events like this remind residents, travelers, and researchers that North Maluku remains an active earthquake region. Monitoring platforms such as GeoQuake.org help turn raw seismic alerts into understandable public information.
Final Overview
The 4.4 earthquake Ternate Indonesia recorded on April 16, 2026, occurred in the Northern Molucca Sea at a depth of 35 km, about 129 km west of Ternate. With no tsunami statement, no felt reports reported, and no damage expected, this event appears to be a routine but scientifically meaningful offshore earthquake within a highly active tectonic zone.
For continued updates on the magnitude 4.4 quake Ternate April 2026 and other global seismic events, GeoQuake.org remains a reliable destination for timely, accurate, and accessible earthquake reporting.