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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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3.1

18 km ESE of Forks, Washington

17 October 2026, 06:37:39 (+03) 2026-10-17 03:37:39 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
3.1 ml
Depth
40.1 km
Coordinates
47.9157, -124.1382
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
1
Last 30 days
2

Approximate energy released

≈ 0.7 t TNT

2.82e+9 J

Approximated with the Gutenberg–Richter relation (log E = 1.5 M + 4.8); depends on magnitude type. Gutenberg & Richter (1956).

Did you feel this earthquake?

Your report adds to a community map of where and how this earthquake was felt. It takes less than a minute.

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 Maximum intensity (MMI): 1,8 Felt reports: 20 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

2 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 1
  • M3 1
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 0
  • 20–40 km 0
  • 40–70 km 2
  • 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

Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
OLYMPIC PENINSULA, WASHINGTON
 3.1 ml 44.8 km 03:37:38.446 Δt 0.59 sn · 5.13 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
18 km ESE of Forks, Washington
 3.1 ml 40.1 km 03:37:39.040 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 22:18:30 · USGS · update

    depth: 40.46 → 40.07 latitude: 47.92083 → 47.91567 longitude: -124.13017 → -124.13817 time: 2026-10-17T03:37:39.030+00:00 → 2026-10-17T03:37:39.040+00:00 location: 19 km E of Forks, Washington → 18 km ESE of Forks, Washington

  2. 20.10.2026 22:18:30 · SISTEM · recompute

    depth: 40.46 → 40.07 latitude: 47.92083 → 47.91567 longitude: -124.13017 → -124.13817 time: 2026-10-17T03:37:39.030Z → 2026-10-17 03:37:39.040+00:00

  3. 18.10.2026 04:41:30 · EMSC · update

    depth: 40.5 → 44.8 latitude: 47.9208 → 47.9552 longitude: -124.1302 → -124.1737 time: 2026-10-17T03:37:39.030+00:00 → 2026-10-17T03:37:38.446+00:00

  4. 17.10.2026 07:52:03 · USGS · update

    depth: 37.85 → 40.46 latitude: 47.9165 → 47.92083 longitude: -124.116 → -124.13017 time: 2026-10-17T03:37:39.230+00:00 → 2026-10-17T03:37:39.030+00:00 location: 20 km E of Forks, Washington → 19 km E of Forks, Washington

  5. 17.10.2026 07:52:03 · SISTEM · recompute

    depth: 37.85 → 40.46 latitude: 47.9165 → 47.92083 longitude: -124.116 → -124.13017 time: 2026-10-17T03:37:39.230Z → 2026-10-17 03:37:39.030+00:00

  6. 17.10.2026 07:52:02 · EMSC · update

    depth: 37.9 → 40.5 latitude: 47.9165 → 47.9208 longitude: -124.116 → -124.1302 time: 2026-10-17T03:37:39.230+00:00 → 2026-10-17T03:37:39.030+00:00

  7. 17.10.2026 06:59:55 · USGS · update

    depth: 37.67 → 37.85 latitude: 47.92133 → 47.9165 longitude: -124.11367 → -124.116 magnitude: 3.2 → 3.1 time: 2026-10-17T03:37:39.280+00:00 → 2026-10-17T03:37:39.230+00:00

  8. 17.10.2026 06:59:55 · SISTEM · recompute

    depth: 37.67 → 37.85 latitude: 47.92133 → 47.9165 longitude: -124.11367 → -124.116 magnitude: 3.2 → 3.1 time: 2026-10-17T03:37:39.280Z → 2026-10-17 03:37:39.230+00:00

  9. 17.10.2026 06:59:55 · EMSC · update

    depth: 37.7 → 37.9 latitude: 47.9213 → 47.9165 longitude: -124.1137 → -124.116 magnitude: 3.2 → 3.1 time: 2026-10-17T03:37:39.280+00:00 → 2026-10-17T03:37:39.230+00:00

  10. 17.10.2026 06:53:45 · USGS · update

    depth: 38.99 → 37.67 latitude: 47.91433 → 47.92133 longitude: -124.12984 → -124.11367 magnitude: 3.3 → 3.2 time: 2026-10-17T03:37:39.130+00:00 → 2026-10-17T03:37:39.280+00:00 location: 19 km ESE of Forks, Washington → 20 km E of Forks, Washington

  11. 17.10.2026 06:53:45 · SISTEM · recompute

    depth: 38.99 → 37.67 latitude: 47.91433 → 47.92133 longitude: -124.12984 → -124.11367 magnitude: 3.3 → 3.2 time: 2026-10-17T03:37:39.130Z → 2026-10-17 03:37:39.280+00:00

  12. 17.10.2026 06:53:43 · EMSC · update

    depth: 39 → 37.7 latitude: 47.9143 → 47.9213 longitude: -124.1298 → -124.1137 magnitude: 3.3 → 3.2 time: 2026-10-17T03:37:39.130+00:00 → 2026-10-17T03:37:39.280+00:00

  13. 17.10.2026 06:49:37 · USGS · update

    review status: automatic → reviewed

  14. 17.10.2026 06:49:37 · SISTEM · recompute

    depth: 39 → 38.99 latitude: 47.9143 → 47.91433 longitude: -124.1298 → -124.12984 review status: automatic → reviewed preferred source: 3 → 4

  15. 17.10.2026 06:41:22 · SISTEM · recompute

    source count: 1 → 2 confirming sources: emsc → emsc,usgs

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