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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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5.4

South Sandwich Islands region

29 October 2026, 08:06:48 (+03) 2026-10-29 05:06:48 UTC

3 sources: EMSC, USGS, GFZ mww
Did you feel this earthquake?
Magnitude
5.4 mww
Depth
8.6 km
Coordinates
-60.2079, -27.9532
Data consistency
91/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
0
Last 30 days
2

Approximate energy released

≈ 1.9 kt TNT

7.94e+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?

Your report adds to a community map of where and how this earthquake was felt. It takes less than a minute.

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 Maximum intensity (MMI): 3,1 PAGER: green ShakeMap

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

2 earthquakes

By magnitude

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

By depth

  • 0–10 km 1
  • 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).

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
SOUTH SANDWICH ISLANDS REGION
 5.4 mw 10.0 km 05:06:48.840 Δt 0.55 sn · 3.25 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
South Sandwich Islands region
 5.4 mww 8.6 km 05:06:48.289 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
South Sandwich Islands Region
 5.8 mb 10.0 km 05:06:48.970 Δt 0.68 sn · 12.25 km · ΔM +0.4 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. 29.10.2026 15:16:51 · EMSC · update

    latitude: -60.2267 → -60.2221 longitude: -27.8636 → -27.9019 magnitude: 5.6 → 5.4 time: 2026-10-29T05:06:48.760+00:00 → 2026-10-29T05:06:48.840+00:00

  2. 29.10.2026 11:22:16 · USGS · update

    depth: 10 → 8.56 latitude: -60.3419 → -60.2079 longitude: -28.0139 → -27.9532 magnitude: 5.6 → 5.4 time: 2026-10-29T05:06:48.297+00:00 → 2026-10-29T05:06:48.289+00:00

  3. 29.10.2026 11:22:16 · SISTEM · recompute

    depth: 10 → 8.56 latitude: -60.3419 → -60.2079 longitude: -28.0139 → -27.9532 magnitude: 5.6 → 5.4 time: 2026-10-29T05:06:48.297Z → 2026-10-29 05:06:48.289+00:00

  4. 29.10.2026 10:42:38 · EMSC · update

    latitude: -60.3419 → -60.2267 longitude: -28.0139 → -27.8636 time: 2026-10-29T05:06:48.297+00:00 → 2026-10-29T05:06:48.760+00:00

  5. 29.10.2026 08:24:23 · SISTEM · recompute

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

  6. 29.10.2026 08:24:21 · SISTEM · recompute

    latitude: -60.303 → -60.3419 longitude: -27.842 → -28.0139 magnitude: 5.8 → 5.6 time: 2026-10-29T05:06:48.970Z → 2026-10-29 05:06:48.297+00:00 source count: 1 → 2 magnitude type: mb → mw confirming sources: gfz → emsc,gfz preferred source: 5 → 3

  7. 29.10.2026 08:18:17 · GFZ · update

    latitude: -60.301 → -60.303 longitude: -27.775 → -27.842 time: 2026-10-29T05:06:48.790+00:00 → 2026-10-29T05:06:48.970+00:00

  8. 29.10.2026 08:18:17 · SISTEM · recompute

    latitude: -60.301 → -60.303 longitude: -27.775 → -27.842 time: 2026-10-29T05:06:48.790Z → 2026-10-29 05:06:48.970+00:00

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