63 km SW of Adak, Alaska
19 October 2026, 03:59:03 (+03) 2026-10-19 00:59:03 UTC
- Magnitude
- 3.3 ml
- Depth
- 4.0 km
- Coordinates
- 51.4020, -177.1580
- Data consistency
- 82/100
Regional activity (100 km)
- Last 24 hours
- 0
- Last 7 days
- 7
- Last 30 days
- 45
Approximate energy released
≈ 1.3 t TNT
5.62e+9 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
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
50 earthquakes
By magnitude
- M0 0
- M1 0
- M2 35
- M3 12
- M4 3
- M5 0
- M6 0
- M7 0
- M8+ 0
By depth
- 0–10 km 6
- 10–20 km 17
- 20–40 km 25
- 40–70 km 1
- 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).
- M3,9 107 km SSE of Adak, Alaska 17.10.2026 · 85 km
- M3,5 126 km WSW of Adak, Alaska 25.09.2026 · 76 km
- M3,1 123 km WSW of Adak, Alaska 09.10.2026 · 71 km
- M3,0 63 km S of Adak, Alaska 16.10.2026 · 31 km
- M2,7 58 km SW of Adak, Alaska 19.10.2026 · 9 km
- M2,7 61 km SW of Adak, Alaska 18.10.2026 · 4 km
- M2,7 150 km SW of Adak, Alaska 17.10.2026 · 91 km
- M2,7 54 km SSE of Adak, Alaska 16.10.2026 · 54 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
ANDREANOF ISLANDS, ALEUTIAN IS.
|
3.0 ml | 18.3 km | 00:59:06.240 | Δt 2.85 sn · 17.11 km · ΔM -0.3 | Original record |
|
USGS Earthquake Hazards Program
Displayed
63 km SW of Adak, Alaska
|
3.3 ml | 4.0 km | 00:59:03.389 | 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
-
22.10.2026 01:08:21 · USGS · update
depth: 18.27 → 4 latitude: 51.553 → 51.402 longitude: -177.205 → -177.158 magnitude: 3 → 3.3 time: 2026-10-19T00:59:06.240+00:00 → 2026-10-19T00:59:03.389+00:00 location: 53 km SW of Adak, Alaska → 63 km SW of Adak, Alaska
-
22.10.2026 01:08:21 · SISTEM · recompute
depth: 18.27 → 4 latitude: 51.553 → 51.402 longitude: -177.205 → -177.158 magnitude: 3 → 3.3 time: 2026-10-19T00:59:06.240Z → 2026-10-19 00:59:03.389+00:00
-
20.10.2026 00:32:30 · SISTEM · recompute
depth: 18.3 → 18.27 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4
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