Moderate M 5.4 Earthquake Strikes 69 km East of Tobelo, Indonesia

Source: USGS · Indonesia

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A magnitude 5.4 earthquake occurred near Tobelo, Indonesia, at a shallow depth of 10 kilometers on March 21, 2026. No tsunami warnings have been issued.

What this USGS earthquake report tells you, and what most readers miss

This notice was issued by USGS on March 6, 2026 and geographically references Indonesia. Its severity classification of "medium" signals how the issuing agency weighs the risk of harm if no action is taken — "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to — Earthquakes — determines the regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly USGS detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action — a single localized USGS earthquake report is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (earthquake, seismic, usgs, Indonesia) map to related alerts in the same area of risk — browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

What Happened

A moderate earthquake with a magnitude of 5.4 (mb) was recorded near Tobelo, Indonesia, on March 21, 2026. The seismic event occurred at 07:15:53 UTC. According to the U.S. Geological Survey (USGS), the earthquake originated at a shallow depth of 10 kilometers.

Location Details

The epicenter was located at coordinates 1.6466°N and 128.6314°E, approximately 69 kilometers east of Tobelo. The depth of 10 kilometers is classified as shallow; shallow earthquakes are typically felt more distinctly at the surface than deeper seismic events.

Impact Assessment

The USGS has assigned this event a "green" alert level, indicating a low likelihood of casualties and economic damage. The estimated Modified Mercalli Intensity (MMI) was 5.874, which corresponds to moderate shaking. There is no tsunami advisory, watch, or warning in effect. No felt reports have been officially submitted to the USGS at this time.

What You Should Know

A magnitude 5.4 earthquake is considered a moderate event. While it can cause damage to poorly constructed buildings, well-built structures typically sustain little to no damage. Residents in the region should be aware that aftershocks are a possibility following an event of this magnitude. In the event of shaking, remember to "Drop, Cover, and Hold On."

Source

Information and data provided by the USGS Earthquake Hazards Program.

Original source: USGS Official Notice ↗

All Earthquakes →

Frequently Asked Questions

Common questions about this USGS earthquake report.

What is this USGS earthquake report about?
A magnitude 5.4 earthquake occurred near Tobelo, Indonesia, at a shallow depth of 10 kilometers on March 21, 2026. No tsunami warnings have been issued.
Which agency issued this alert?
This alert was issued by USGS. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "medium" severity. Stay informed and follow agency guidance.
What area is affected?
This alert affects Indonesia. Check with USGS for the most current geographic scope.
Where can I find more Earthquakes updates?
Browse the full Earthquakes feed on Areazine at areazine.com/earthquakes/ for the latest updates from USGS and other agencies.