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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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3.6

6 km WSW of Hermosa Beach, CA

27 September 2026, 18:40:01 (+03) 2026-09-27 15:40:01 UTC

2 sources: EMSC, USGS mw
Did you feel this earthquake?
Magnitude
3.6 mw
Depth
11.9 km
Coordinates
33.8442, -118.4650
Data consistency
90/100

Regional activity (100 km)

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

Approximate energy released

≈ 3.8 t TNT

1.58e+10 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): 3,2 Felt reports: 562 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

12 earthquakes

By magnitude

  • M0 0
  • M1 1
  • M2 8
  • M3 3
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 6
  • 10–20 km 6
  • 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).

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
SANTA MONICA BAY, CALIFORNIA
 3.5 mw 11.9 km 15:40:01.580 Δt 0 sn · 0 km · ΔM -0.1 Original record
USGS Earthquake Hazards Program Displayed
6 km WSW of Hermosa Beach, CA
 3.6 mw 11.9 km 15:40:01.580 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. 27.09.2026 18:52:23 · USGS · update

    magnitude: 3.5 → 3.6 magnitude type: mlr → mw

  2. 27.09.2026 18:52:23 · SISTEM · recompute

    magnitude: 3.5 → 3.6 magnitude type: mlr → mw

  3. 27.09.2026 18:52:22 · EMSC · update

    time: 2026-09-27T15:40:00.730+00:00 → 2026-09-27T15:40:01.580+00:00 magnitude type: ml → mw

  4. 27.09.2026 18:51:20 · USGS · update

    review status: automatic → reviewed

  5. 27.09.2026 18:51:20 · SISTEM · recompute

    depth: 11.9 → 11.85 latitude: 33.8442 → 33.84417 time: 2026-09-27T15:40:00.730Z → 2026-09-27 15:40:01.580+00:00 review status: automatic → reviewed magnitude type: ml → mlr preferred source: 3 → 4

  6. 27.09.2026 18:51:19 · EMSC · update

    depth: 10 → 11.9 latitude: 33.7114 → 33.8442 longitude: -118.5141 → -118.465 time: 2026-09-27T15:39:59.330+00:00 → 2026-09-27T15:40:00.730+00:00 location: CHANNEL ISLANDS REG., CALIFORNIA → SANTA MONICA BAY, CALIFORNIA

  7. 27.09.2026 18:51:19 · SISTEM · recompute

    depth: 10 → 11.9 latitude: 33.7114 → 33.8442 longitude: -118.5141 → -118.465 time: 2026-09-27T15:39:59.330Z → 2026-09-27 15:40:00.730+00:00

  8. 27.09.2026 18:49:15 · EMSC · update

    depth: 11.9 → 10 latitude: 33.8442 → 33.7114 longitude: -118.465 → -118.5141 time: 2026-09-27T15:40:01.580+00:00 → 2026-09-27T15:39:59.330+00:00 location: SANTA MONICA BAY, CALIFORNIA → CHANNEL ISLANDS REG., CALIFORNIA

  9. 27.09.2026 18:49:15 · SISTEM · recompute

    depth: 11.9 → 10 latitude: 33.8442 → 33.7114 longitude: -118.465 → -118.5141 time: 2026-09-27T15:40:01.580Z → 2026-09-27 15:39:59.330+00:00

  10. 27.09.2026 18:43:08 · SISTEM · recompute

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

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