10 km N of Lake Pillsbury, CA
28 October 2026, 15:01:11 (+03) 2026-10-28 12:01:11 UTC
- Magnitude
- 4.0 mw
- Depth
- 11.6 km
- Coordinates
- 39.5008, -122.9522
- Data consistency
- 90/100
Regional activity (100 km)
- Last 24 hours
- 1
- Last 7 days
- 5
- Last 30 days
- 34
Approximate energy released
≈ 15 t TNT
6.31e+10 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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Reporting for this earthquake has closed; results are below.
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Community reports
No reports yet. Be the first to report.
- 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): 3,7 Felt reports: 7 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
40 earthquakes
By magnitude
- M0 0
- M1 0
- M2 37
- M3 2
- M4 1
- M5 0
- M6 0
- M7 0
- M8+ 0
By depth
- 0–10 km 37
- 10–20 km 2
- 20–40 km 1
- 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).
- M3,7 10 km W of Boonville, CA 26.09.2026 · 71 km
- M3,1 NORTHERN CALIFORNIA 10.10.2026 · 37 km
- M2,9 NORTHERN CALIFORNIA 15.10.2026 · 78 km
- M2,7 NORTHERN CALIFORNIA 26.09.2026 · 71 km
- M2,6 NORTHERN CALIFORNIA 27.09.2026 · 34 km
- M2,5 NORTHERN CALIFORNIA 20.10.2026 · 81 km
- M2,4 NORTHERN CALIFORNIA 24.10.2026 · 75 km
- M2,4 NORTHERN CALIFORNIA 20.10.2026 · 63 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
NORTHERN CALIFORNIA
|
3.8 mw | 11.6 km | 12:01:11.490 | Δt 0 sn · 0 km · ΔM -0.2 | Original record |
|
USGS Earthquake Hazards Program
Displayed
10 km N of Lake Pillsbury, CA
|
4.0 mw | 11.6 km | 12:01:11.490 | 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
-
28.10.2026 19:23:33 · USGS · update
depth: 10.59 → 11.59 latitude: 39.5005 → 39.50083 longitude: -122.95184 → -122.95217 time: 2026-10-28T12:01:11.470+00:00 → 2026-10-28T12:01:11.490+00:00
-
28.10.2026 19:23:33 · SISTEM · recompute
depth: 10.59 → 11.59 latitude: 39.5005 → 39.50083 longitude: -122.95184 → -122.95217 time: 2026-10-28T12:01:11.470Z → 2026-10-28 12:01:11.490+00:00
-
28.10.2026 19:23:31 · EMSC · update
depth: 10 → 11.6 latitude: 39.4915 → 39.5008 longitude: -122.9434 → -122.9522 time: 2026-10-28T12:01:11.226+00:00 → 2026-10-28T12:01:11.490+00:00
-
28.10.2026 15:43:14 · EMSC · update
depth: 10.6 → 10 latitude: 39.5005 → 39.4915 longitude: -122.9518 → -122.9434 magnitude: 4 → 3.8 time: 2026-10-28T12:01:11.470+00:00 → 2026-10-28T12:01:11.226+00:00
-
28.10.2026 15:18:25 · USGS · update
magnitude: 3.9 → 4 magnitude type: ml → mw
-
28.10.2026 15:18:25 · SISTEM · recompute
magnitude: 3.9 → 4 magnitude type: ml → mw
-
28.10.2026 15:18:22 · EMSC · update
magnitude: 3.9 → 4 magnitude type: ml → mw
-
28.10.2026 15:06:36 · USGS · update
review status: automatic → reviewed
-
28.10.2026 15:06:36 · SISTEM · recompute
depth: 10.6 → 10.59 longitude: -122.9518 → -122.95184 review status: automatic → reviewed preferred source: 3 → 4
-
28.10.2026 15:05:34 · SISTEM · recompute
source count: 1 → 2 confirming sources: emsc → emsc,usgs
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