Earthquake 213 km WSW of Hihifo, Tonga
Reported by USGS 3 days ago.
What the source measured
USGS reported: 213 km WSW of Hihifo, Tonga
USGS recorded magnitude 4.3 at a depth of 334 km.
How we know
Confirmed by 2 independent sources, including USGS.
Our own score for this event is 3 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 | low |
| Calamity Score (ours) | 3 / 100 |
| Our confidence | 68% |
| Coordinates | -16.5532, -175.6958 |
| Timestamp | 2026-08-29T00:09:59.567Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/us7000tcqt |
Score Breakdown
Technical Details
| Mag | 4.3 |
| Depth | 334.01 |
| Tsunami | false |
| Sig | 284 |
| Emsc Mag | 4.3 |
| Emsc Depth | -334 |
| Emsc MagType | mb |
| Emsc Region | TONGA |
| Emsc Auth | NEIC |
| Emsc SourceId | 2052713 |
| MergedSources | [{"id":"emsc_20260829_0000040","source":"emsc","severity":"low","severityValue":25.799999999999997,"timestamp":1787962199567,"latitude":-16.5532,"longitude":-175.6958}] |
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.
Calamity.live data shows a earthquake event with CalamityScore 3/100, 213 km WSW of Hihifo, Tonga, based on data from usgs. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.