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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

Kuril Islands

20 October 2026, 00:43:36 (+03) 2026-10-19 21:43:36 UTC

2 sources: EMSC, USGS mb
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Magnitude
4.5 mb
Depth
102.1 km
Coordinates
48.4485, 153.6468
Data consistency
83/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
0
Last 30 days
6

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

6 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 0
  • M4 5
  • 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 3
  • 70–150 km 1
  • 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
KURIL ISLANDS
 4.5 mb 100.0 km 21:43:35.510 Δt 1.07 sn · 19.96 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
Kuril Islands
 4.5 mb 102.1 km 21:43:36.577 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 09:46:02 · EMSC · update

    depth: 90 → 100 latitude: 48.12 → 48.2817 longitude: 153.96 → 153.7463 magnitude: 4.4 → 4.5 time: 2026-10-19T21:43:33.600+00:00 → 2026-10-19T21:43:35.510+00:00

  2. 20.10.2026 08:12:33 · EMSC · update

    depth: 102.1 → 90 latitude: 48.4485 → 48.12 longitude: 153.6468 → 153.96 magnitude: 4.5 → 4.4 time: 2026-10-19T21:43:36.577+00:00 → 2026-10-19T21:43:33.600+00:00

  3. 20.10.2026 01:35:46 · SISTEM · recompute

    depth: 102.1 → 102.09 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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