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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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5.0

95 km NNE of Hihifo, Tonga

27 October 2026, 12:07:45 (+03) 2026-10-27 09:07:45 UTC

3 sources: EMSC, USGS, GFZ mb
Did you feel this earthquake?
Magnitude
5.0 mb
Depth
10.0 km
Coordinates
-15.1739, -173.4094
Data consistency
92/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
1
Last 30 days
4

Approximate energy released

≈ 477 t TNT

2.00e+12 J

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

Did you feel this earthquake?

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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

5 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 0
  • M4 2
  • M5 3
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 3
  • 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

Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
TONGA
 5.0 mb 28.0 km 09:07:47.380 Δt 2.26 sn · 19.89 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
95 km NNE of Hihifo, Tonga
 5.0 mb 10.0 km 09:07:45.122 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
Tonga Islands
 5.1 mb 10.0 km 09:07:45.180 Δt 0.06 sn · 9.37 km · ΔM +0.1 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. 27.10.2026 12:36:39 · EMSC · update

    depth: 10 → 28 latitude: -15.1739 → -15.2277 longitude: -173.4094 → -173.2328 time: 2026-10-27T09:07:45.122+00:00 → 2026-10-27T09:07:47.380+00:00

  2. 27.10.2026 12:27:59 · SISTEM · recompute

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

  3. 27.10.2026 12:27:56 · SISTEM · recompute

    latitude: -15.232 → -15.1739 longitude: -173.346 → -173.4094 magnitude: 5.1 → 5 time: 2026-10-27T09:07:45.180Z → 2026-10-27 09:07:45.122+00:00 source count: 1 → 2 confirming sources: gfz → emsc,gfz preferred source: 5 → 3

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