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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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4.5

100 km SSW of Alo, Wallis and Futuna

20 October 2026, 11:58:37 (+03) 2026-10-20 08:58:37 UTC

3 sources: EMSC, USGS, GFZ mb
Did you feel this earthquake?
Magnitude
4.5 mb
Depth
417.5 km
Coordinates
-15.1536, -178.4627
Data consistency
97/100

Regional activity (100 km)

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

Approximate energy released

≈ 85 t TNT

3.55e+11 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

1 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 0
  • M4 1
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

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

Largest previous earthquakes within 100 km

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

No records.

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
FIJI REGION
 4.5 mb 420.0 km 08:58:37.530 Δt 0.35 sn · 4.61 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
100 km SSW of Alo, Wallis and Futuna
 4.5 mb 417.5 km 08:58:37.177 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
Fiji Islands Region
 4.8 mb 412.8 km 08:58:37.400 Δt 0.22 sn · 1.47 km · ΔM +0.3 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. 20.10.2026 12:51:30 · EMSC · update

    depth: 417.5 → 420 latitude: -15.1536 → -15.1711 longitude: -178.4627 → -178.4238 time: 2026-10-20T08:58:37.177+00:00 → 2026-10-20T08:58:37.530+00:00

  2. 20.10.2026 12:23:42 · SISTEM · recompute

    depth: 417.5 → 417.49 source count: 2 → 3 review status: automatic → reviewed confirming sources: emsc,gfz → emsc,usgs,gfz preferred source: 3 → 4

  3. 20.10.2026 12:23:07 · EMSC · update

    depth: 389 → 417.5 latitude: -15.1895 → -15.1536 longitude: -178.4273 → -178.4627 magnitude: 5 → 4.5 time: 2026-10-20T08:58:35.430+00:00 → 2026-10-20T08:58:37.177+00:00

  4. 20.10.2026 12:23:07 · SISTEM · recompute

    depth: 389 → 417.5 latitude: -15.1895 → -15.1536 longitude: -178.4273 → -178.4627 magnitude: 5 → 4.5 time: 2026-10-20T08:58:35.430Z → 2026-10-20 08:58:37.177+00:00

  5. 20.10.2026 12:17:31 · SISTEM · recompute

    source count: 1 → 2 confirming sources: emsc → emsc,gfz

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