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Significant earthquake

This summarises a recorded earthquake only; it is not a warning or a prediction. Follow AFAD and the competent authorities for official statements and guidance.

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5.1

91 km ENE of Hihifo, Tonga

8 November 2026, 02:27:09 (+03) 2026-11-07 23:27:09 UTC

3 sources: EMSC, USGS, GFZ mb
Did you feel this earthquake?
Magnitude
5.1 mb
Depth
10.0 km
Coordinates
-15.6837, -172.9847
Data consistency
84/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
1
Last 30 days
5

Approximate energy released

≈ 674 t TNT

2.82e+12 J

Approximated with the Gutenberg–Richter relation (log E = 1.5 M + 4.8); depends on magnitude type. Gutenberg & Richter (1956).

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Community reports

Based on voluntary reports from users; not an instrumental measurement or official intensity. For official information follow AFAD and Kandilli Observatory announcements.

Impact information reported by sources

  • USGS Earthquake Hazards Program Tsunami flag: No

These values are automatic products of the respective agency, not an assessment by this platform. For tsunami warnings follow the Kandilli Observatory Regional Earthquake-Tsunami Monitoring Center and AFAD.

Nearby places

No records.

Nearby faults (50 km)

No mapped fault within 50 km.

Last year, within 100 km

6 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 0
  • M4 3
  • M5 3
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 4
  • 20–40 km 1
  • 40–70 km 0
  • 70–150 km 1
  • 150+ km 0

Largest previous earthquakes within 100 km

Largest earthquakes in the platform catalogue and entries from historical catalogues (with citation).

Comparison with past records

…

No earlier earthquakes are recorded in this area.

  • Source:

Where does this earthquake come from?

Source comparison

Sources report different values.
Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
SAMOA ISLANDS REGION
 4.9 mw 29.0 km 23:27:11.230 Δt 1.79 sn · 3.3 km · ΔM -0.2 Original record
USGS Earthquake Hazards Program Displayed
91 km ENE of Hihifo, Tonga
 5.1 mb 10.0 km 23:27:09.444 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
Tonga Islands
 5.3 mb 10.0 km 23:27:08.720 Δt 0.72 sn · 30.67 km · ΔM +0.2 Original record

This value summarises agreement between sources; it is not a measure of scientific accuracy. Euro-Mediterranean Seismological Centre (EMSC-CSEM) — CC BY 4.0 U.S. Geological Survey (USGS) Earthquake Hazards Program — Public domain (U.S. Government) GEOFON Program, GFZ Helmholtz Centre for Geosciences — CC BY 4.0

Revision history

  1. 09.11.2026 01:10:35 · EMSC · update

    depth: 10 → 29 latitude: -15.6837 → -15.668 longitude: -172.9847 → -172.9585 magnitude: 5.1 → 4.9 time: 2026-11-07T23:27:09.444+00:00 → 2026-11-07T23:27:11.230+00:00 magnitude type: mb → mw

  2. 08.11.2026 02:45:50 · SISTEM · recompute

    source count: 2 → 3 confirming sources: emsc,usgs → emsc,usgs,gfz

  3. 08.11.2026 02:44:58 · SISTEM · recompute

    source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  4. 08.11.2026 02:44:57 · EMSC · update

    depth: 34 → 10 latitude: -15.8467 → -15.6837 longitude: -172.6705 → -172.9847 magnitude: 5.3 → 5.1 time: 2026-11-07T23:27:14.660+00:00 → 2026-11-07T23:27:09.444+00:00 magnitude type: m → mb

  5. 08.11.2026 02:44:57 · SISTEM · recompute

    depth: 34 → 10 latitude: -15.8467 → -15.6837 longitude: -172.6705 → -172.9847 magnitude: 5.3 → 5.1 time: 2026-11-07T23:27:14.660Z → 2026-11-07 23:27:09.444+00:00 magnitude type: m → mb

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