161 km S of Nikolski, Alaska
19 October 2026, 08:08:40 (+03) 2026-10-19 05:08:40 UTC
- Magnitude
- 4.0 mb
- Depth
- 10.0 km
- Coordinates
- 51.5152, -168.4220
- Data consistency
- 89/100
Regional activity (100 km)
- Last 24 hours
- 0
- Last 7 days
- 1
- Last 30 days
- 18
Approximate energy released
≈ 15 t TNT
6.31e+10 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
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- Community intensity
- Typical duration
- Farthest report
- felt it
Estimated, close to the MMI scale
Intensity distribution
Provinces with reports
Reported effects
Squares on the map show community reports (~11 km grid; colour = estimated intensity).
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): 1,3 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
21 earthquakes
By magnitude
- M0 0
- M1 0
- M2 10
- M3 8
- M4 3
- M5 0
- M6 0
- M7 0
- M8+ 0
By depth
- 0–10 km 7
- 10–20 km 13
- 20–40 km 1
- 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).
- M4,7 FOX ISLANDS, ALEUTIAN ISLANDS 15.10.2026 · 98 km
- M3,2 115 km SSW of Nikolski, Alaska 16.10.2026 · 82 km
- M3,2 96 km SSW of Nikolski, Alaska 20.09.2026 · 82 km
- M2,9 91 km SE of Nikolski, Alaska 17.10.2026 · 96 km
- M2,9 95 km SSW of Nikolski, Alaska 20.09.2026 · 82 km
- M2,8 103 km SSW of Nikolski, Alaska 18.10.2026 · 77 km
- M2,7 84 km S of Nikolski, Alaska 20.09.2026 · 78 km
- M2,6 102 km S of Nikolski, Alaska 19.10.2026 · 62 km
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
FOX ISLANDS, ALEUTIAN ISLANDS
|
3.9 ml | 20.0 km | 05:08:42.141 | Δt 1.74 sn · 6.77 km · ΔM -0.1 | Original record |
|
USGS Earthquake Hazards Program
Displayed
161 km S of Nikolski, Alaska
|
4.0 mb | 10.0 km | 05:08:40.403 | 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
-
19.10.2026 19:26:15 · EMSC · update
depth: 10 → 20 latitude: 51.5152 → 51.529 longitude: -168.422 → -168.517 magnitude: 4 → 3.9 time: 2026-10-19T05:08:40.403+00:00 → 2026-10-19T05:08:42.141+00:00 magnitude type: mb → ml
-
19.10.2026 16:24:46 · SISTEM · recompute
source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4
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