Rat Islands, Aleutian Islands, Alaska
19 October 2026, 19:27:45 (+03) 2026-10-19 16:27:45 UTC
- Magnitude
- 4.2 mb
- Depth
- 52.2 km
- Coordinates
- 51.5183, 178.3686
- Data consistency
- 88/100
Regional activity (100 km)
- Last 24 hours
- 0
- Last 7 days
- 4
- Last 30 days
- 16
Approximate energy released
≈ 30 t TNT
1.26e+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
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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): 2,9 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 11
- M3 6
- M4 4
- M5 0
- M6 0
- M7 0
- M8+ 0
By depth
- 0–10 km 5
- 10–20 km 4
- 20–40 km 1
- 40–70 km 6
- 70–150 km 5
- 150+ km 0
Largest previous earthquakes within 100 km
Largest earthquakes in the platform catalogue and entries from historical catalogues (with citation).
- M4,6 Rat Islands, Aleutian Islands, Alaska 27.09.2026 · 95 km
- M4,4 275 km W of Adak, Alaska 11.10.2026 · 74 km
- M4,1 Rat Islands, Aleutian Islands, Alaska 17.10.2026 · 27 km
- M3,8 RAT ISLANDS, ALEUTIAN ISLANDS 14.10.2026 · 94 km
- M3,6 RAT ISLANDS, ALEUTIAN ISLANDS 13.10.2026 · 57 km
- M3,1 Rat Islands, Aleutian Islands, Alaska 12.10.2026 · 58 km
- M3,0 Rat Islands, Aleutian Islands, Alaska 12.10.2026 · 45 km
- M2,9 Rat Islands, Aleutian Islands, Alaska 16.10.2026 · 28 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
RAT ISLANDS, ALEUTIAN ISLANDS
|
4.5 ml | 52.2 km | 16:27:45.503 | Δt 0 sn · 0 km · ΔM +0.3 | Original record |
|
USGS Earthquake Hazards Program
Displayed
Rat Islands, Aleutian Islands, Alaska
|
4.2 mb | 52.2 km | 16:27:45.503 | 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 19:54:55 · USGS · update
depth: 39.2 → 52.17 latitude: 51.354 → 51.5183 longitude: 178.218 → 178.3686 magnitude: 4.5 → 4.2 time: 2026-10-19T16:27:44.382+00:00 → 2026-10-19T16:27:45.503+00:00 magnitude type: ml → mb
-
19.10.2026 19:54:55 · SISTEM · recompute
depth: 39.2 → 52.17 latitude: 51.354 → 51.5183 longitude: 178.218 → 178.3686 magnitude: 4.5 → 4.2 time: 2026-10-19T16:27:44.382Z → 2026-10-19 16:27:45.503+00:00 magnitude type: ml → mb
-
19.10.2026 19:54:53 · SISTEM · recompute
source count: 1 → 2 confirming sources: usgs → emsc,usgs
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