Reported by GFZ today.
What the source measured
GFZ reported: Tonga Islands
GFZ recorded magnitude 5.4 at a depth of 187 km.
The seismic region given by the source is Tonga Islands.
This is the lowest magnitude we have recorded at this point, over 8 readings since 1 September 2026 — the previous range was 5.44 to 5.47.
How we know
One source: GFZ. Not yet confirmed by a second, independent source.
Our own score for this event is 20 out of 100, at 63 % 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) | 20 / 100 |
| Our confidence | 63% |
| Coordinates | -19.6470, -175.3410 |
| Nearest City | Nuku‘alofa (167 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-01T08:34:47.410Z |
| Source | https://geofon.gfz-potsdam.de/eqinfo/event.php?id=gfz2026rcue |
Score Breakdown
Technical Details
| Mag | 5.44 |
| Depth | 187.1 |
| MagType | mb |
| Region | Tonga Islands |
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 near Nuku‘alofa?
Calamity.live data shows a earthquake event with CalamityScore 20/100, in Tonga Islands (Tonga), based on data from gfz. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.