Reported by ISC today.
It is the 6th strongest of the 6 detections recorded within 20 km of this point since 1 September 2026.
What the source measured
ISC reported: Halmahera
ISC recorded magnitude 5.4 at a depth of 10 km.
The seismic region given by the source is Halmahera.
Nearby, since 1 September 2026
- September 1, 2026 · score 21 · 8.0 km
How we know
Confirmed by 3 independent sources, including ISC.
Our own score for this event is 19 out of 100, at 68 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Earthquake |
| Severity | medium |
| Calamity Score (ours) | 19 / 100 |
| Our confidence | 68% |
| Coordinates | 0.2400, 128.8000 |
| Nearest City | Sofifi (149 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-01T06:22:22.400Z |
| Source | http://www.isc.ac.uk/cgi-bin/web-db-run?event_id=646265655&out_format=IMS1.0&request=COMPREHENSIVE |
Score Breakdown
Technical Details
| Mag | 5.4 |
| Depth | 10 |
| MagType | Mw |
| Region | Halmahera |
| Ingv Mag | 5.6 |
| Ingv Depth | 11.7 |
| Ingv MagType | Mwp |
| Ingv Author | SURVEY-INGV-A |
| Ingv Region | Halmahera, Indonesia [Sea: Indonesia] |
| Gfz Mag | 5.4 |
| Gfz Depth | 10 |
| Gfz MagType | Mw |
| Gfz Region | Halmahera, Indonesia |
| MergedSources | [{"id":"ingv_47048412","source":"ingv","severity":"medium","severityValue":44.8,"timestamp":1788243743935,"latitude":0.189844,"longitude":128.918},{"id":"gfz_gfz2026rcpv","source":"gfz","severity":"medium","severityValue":43.2,"timestamp":1788243742010,"latitude":0.29,"longitude":128.831}] |
Safety Information
If you feel shaking: Drop, Cover, and Hold On. Move away from windows, heavy objects, and exterior walls. After shaking stops, check for injuries and structural damage. Be prepared for aftershocks, which can occur minutes to months after the mainshock. Follow instructions from local emergency management authorities.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a earthquake event with CalamityScore 19/100, in Halmahera (Indonesia), based on data from isc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.