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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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4.9

South Sandwich Islands region

10 November 2026, 02:40:12 (+03) 2026-11-09 23:40:12 UTC

2 sources: EMSC, USGS mb
Did you feel this earthquake?
Magnitude
4.9 mb
Depth
10.0 km
Coordinates
-56.7537, -23.8725
Data consistency
85/100

Regional activity (100 km)

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

Approximate energy released

≈ 338 t TNT

1.41e+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

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 0
  • 10–20 km 2
  • 20–40 km 0
  • 40–70 km 0
  • 70–150 km 0
  • 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
 4.8 mb 10.0 km 23:40:13.980 Δt 1.05 sn · 16.62 km · ΔM -0.1 Original record
USGS Earthquake Hazards Program Displayed
South Sandwich Islands region
 4.9 mb 10.0 km 23:40:12.931 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. 11.11.2026 00:55:23 · SISTEM · recompute

    latitude: -56.8462 → -56.7537 longitude: -23.6591 → -23.8725 magnitude: 4.8 → 4.9 time: 2026-11-09T23:40:13.980Z → 2026-11-09 23:40:12.931+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  2. 10.11.2026 13:35:30 · EMSC · update

    magnitude: 5 → 4.8 magnitude type: m → mb

  3. 10.11.2026 13:35:30 · SISTEM · recompute

    magnitude: 5 → 4.8 magnitude type: m → mb

  4. 10.11.2026 11:33:22 · EMSC · update

    latitude: -56.86 → -56.8462 longitude: -23.654 → -23.6591 time: 2026-11-09T23:40:13.430+00:00 → 2026-11-09T23:40:13.980+00:00

  5. 10.11.2026 11:33:22 · SISTEM · recompute

    latitude: -56.86 → -56.8462 longitude: -23.654 → -23.6591 time: 2026-11-09T23:40:13.430Z → 2026-11-09 23:40:13.980+00:00

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