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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

Balleny Islands region

30 October 2026, 13:12:28 (+03) 2026-10-30 10:12:28 UTC

3 sources: EMSC, USGS, GFZ mb
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Magnitude
5.1 mb
Depth
10.0 km
Coordinates
-62.4457, 155.2618
Data consistency
92/100

Regional activity (100 km)

Last 24 hours
1
Last 7 days
1
Last 30 days
2

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

2 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 0
  • M4 0
  • M5 2
  • 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).

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
BALLENY ISLANDS REGION
 5.1 mb 10.0 km 10:12:27.800 Δt 0.42 sn · 12.21 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
Balleny Islands region
 5.1 mb 10.0 km 10:12:28.219 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
Balleny Islands Region
 5.3 mb 10.0 km 10:12:27.170 Δt 1.05 sn · 20.94 km · ΔM +0.2 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. 30.10.2026 15:05:01 · EMSC · update

    latitude: -62.4457 → -62.526 longitude: 155.2618 → 155.4229 time: 2026-10-30T10:12:28.219+00:00 → 2026-10-30T10:12:27.800+00:00

  2. 30.10.2026 13:32:17 · SISTEM · recompute

    source count: 2 → 3 confirming sources: usgs,gfz → emsc,usgs,gfz

  3. 30.10.2026 13:31:11 · SISTEM · recompute

    latitude: -62.527 → -62.4457 longitude: 155.628 → 155.2618 magnitude: 5.3 → 5.1 time: 2026-10-30T10:12:27.170Z → 2026-10-30 10:12:28.219+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: gfz → usgs,gfz preferred source: 5 → 4

  4. 30.10.2026 13:30:52 · GFZ · update

    latitude: -62.478 → -62.527 longitude: 155.345 → 155.628 magnitude: 5.2 → 5.3 time: 2026-10-30T10:12:28.600+00:00 → 2026-10-30T10:12:27.170+00:00

  5. 30.10.2026 13:30:52 · SISTEM · recompute

    latitude: -62.478 → -62.527 longitude: 155.345 → 155.628 magnitude: 5.2 → 5.3 time: 2026-10-30T10:12:28.600Z → 2026-10-30 10:12:27.170+00:00

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