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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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5.0

111 km W of Petrolia, CA

5 November 2026, 07:56:02 (+03) 2026-11-05 04:56:02 UTC

3 sources: EMSC, USGS, GFZ mw
Did you feel this earthquake?
Magnitude
5.0 mw
Depth
10.0 km
Coordinates
40.4073, -125.5853
Data consistency
92/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
1
Last 30 days
10

Approximate energy released

≈ 477 t TNT

2.00e+12 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?

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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 Maximum intensity (MMI): 2,8 Felt reports: 121 PAGER: green 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

14 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 6
  • M3 7
  • M4 0
  • M5 1
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 6
  • 10–20 km 8
  • 20–40 km 0
  • 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).

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
OFFSHORE NORTHERN CALIFORNIA
 5.0 mw 10.0 km 04:56:04.590 Δt 1.92 sn · 15.41 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
111 km W of Petrolia, CA
 5.0 mw 10.0 km 04:56:02.670 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
Off Coast of Northern California
 4.9 mb 10.0 km 04:56:06.530 Δt 3.86 sn · 20.35 km · ΔM -0.1 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) GEOFON Program, GFZ Helmholtz Centre for Geosciences — CC BY 4.0

Revision history

  1. 05.11.2026 15:58:36 · EMSC · update

    latitude: 40.4716 → 40.4795 longitude: -125.4242 → -125.4302 time: 2026-11-05T04:56:04.530+00:00 → 2026-11-05T04:56:04.590+00:00

  2. 05.11.2026 14:48:52 · USGS · update

    depth: 2.14 → 10 latitude: 40.42533 → 40.40733 longitude: -125.62717 → -125.58533 time: 2026-11-05T04:56:01.430+00:00 → 2026-11-05T04:56:02.670+00:00 location: 114 km W of Petrolia, CA → 111 km W of Petrolia, CA

  3. 05.11.2026 14:48:52 · SISTEM · recompute

    depth: 2.14 → 10 latitude: 40.42533 → 40.40733 longitude: -125.62717 → -125.58533 time: 2026-11-05T04:56:01.430Z → 2026-11-05 04:56:02.670+00:00

  4. 05.11.2026 10:29:44 · EMSC · update

    latitude: 40.3891 → 40.4716 longitude: -125.6658 → -125.4242 time: 2026-11-05T04:55:58.594+00:00 → 2026-11-05T04:56:04.530+00:00

  5. 05.11.2026 08:09:03 · USGS · update

    magnitude: 4.6 → 5 magnitude type: ml → mw

  6. 05.11.2026 08:09:03 · SISTEM · recompute

    magnitude: 4.6 → 5 magnitude type: ml → mw

  7. 05.11.2026 08:06:45 · EMSC · update

    magnitude: 4.5 → 5 magnitude type: mb → mw

  8. 05.11.2026 08:04:37 · SISTEM · recompute

    source count: 2 → 3 confirming sources: emsc,usgs → emsc,usgs,gfz

  9. 05.11.2026 08:03:32 · USGS · update

    review status: automatic → reviewed

  10. 05.11.2026 08:03:32 · SISTEM · recompute

    depth: 10 → 2.14 latitude: 40.3891 → 40.42533 longitude: -125.6658 → -125.62717 magnitude: 4.5 → 4.6 time: 2026-11-05T04:55:58.594Z → 2026-11-05 04:56:01.430+00:00 review status: automatic → reviewed magnitude type: mb → ml preferred source: 3 → 4

  11. 05.11.2026 08:02:23 · SISTEM · recompute

    depth: 2.14 → 10 latitude: 40.42533 → 40.3891 longitude: -125.62717 → -125.6658 magnitude: 4.6 → 4.5 time: 2026-11-05T04:56:01.430Z → 2026-11-05 04:55:58.594+00:00 source count: 1 → 2 magnitude type: ml → mb confirming sources: usgs → emsc,usgs preferred source: 4 → 3

  12. 05.11.2026 08:01:25 · USGS · update

    depth: 8 → 2.14 latitude: 40.3121 → 40.42533 longitude: -125.3016 → -125.62717 time: 2026-11-05T04:56:06.000+00:00 → 2026-11-05T04:56:01.430+00:00 location: 92 km WSW of Ferndale, California → 114 km W of Petrolia, CA magnitude type: mw → ml

  13. 05.11.2026 08:01:25 · SISTEM · recompute

    depth: 8 → 2.14 latitude: 40.3121 → 40.42533 longitude: -125.3016 → -125.62717 time: 2026-11-05T04:56:06.000Z → 2026-11-05 04:56:01.430+00:00 magnitude type: mw → ml

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