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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

South Sandwich Islands region

19 October 2026, 20:45:50 (+03) 2026-10-19 17:45:50 UTC

2 sources: EMSC, USGS mb Under moderator review
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Magnitude
5.1 mb
Depth
101.5 km
Coordinates
-56.3542, -27.0851
Data consistency
90/100

Regional activity (100 km)

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

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

4 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 0
  • M4 0
  • M5 4
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 0
  • 20–40 km 0
  • 40–70 km 1
  • 70–150 km 3
  • 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
SOUTH SANDWICH ISLANDS REGION
 5.1 mb 102.0 km 17:45:50.830 Δt 0.35 sn · 3.55 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
South Sandwich Islands region
 5.1 mb 101.5 km 17:45:50.479 Δt 0 sn · 0 km · ΔM 0 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)

Revision history

  1. 20.10.2026 09:43:57 · EMSC · update

    depth: 101.5 → 102 latitude: -56.3542 → -56.3234 longitude: -27.0851 → -27.0703 time: 2026-10-19T17:45:50.479+00:00 → 2026-10-19T17:45:50.830+00:00

  2. 19.10.2026 21:09:08 · SISTEM · recompute

    depth: 101.5 → 101.46 source count: 1 → 2 confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  3. 19.10.2026 21:02:06 · EMSC · update

    depth: 49 → 101.5 latitude: -56.2215 → -56.3542 longitude: -26.615 → -27.0851 magnitude: 5.2 → 5.1 time: 2026-10-19T17:45:45.650+00:00 → 2026-10-19T17:45:50.479+00:00 magnitude type: m → mb

  4. 19.10.2026 21:02:06 · SISTEM · recompute

    depth: 49 → 101.5 latitude: -56.2215 → -56.3542 longitude: -26.615 → -27.0851 magnitude: 5.2 → 5.1 time: 2026-10-19T17:45:45.650Z → 2026-10-19 17:45:50.479+00:00 magnitude type: m → mb

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