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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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4.0

191 km NW of Oula Xiuma, China

16 October 2026, 03:37:46 (+03) 2026-10-16 00:37:46 UTC

2 sources: EMSC, USGS mb
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Magnitude
4.0 mb
Depth
10.0 km
Coordinates
35.3246, 99.4947
Data consistency
86/100

Regional activity (100 km)

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

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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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

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 0
  • M3 0
  • M4 1
  • M5 1
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 2
  • 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
SOUTHERN QINGHAI, CHINA
 4.0 mb 15.0 km 00:37:48.170 Δt 1.33 sn · 14.18 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
191 km NW of Oula Xiuma, China
 4.0 mb 10.0 km 00:37:46.842 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. 16.10.2026 21:05:20 · SISTEM · recompute

    depth: 15 → 10 latitude: 35.4506 → 35.3246 longitude: 99.5208 → 99.4947 time: 2026-10-16T00:37:48.170Z → 2026-10-16 00:37:46.842+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  2. 16.10.2026 14:52:51 · EMSC · update

    depth: 10 → 15 latitude: 35.3246 → 35.4506 longitude: 99.4947 → 99.5208 magnitude: 3.1 → 4 time: 2026-10-16T00:37:46.842+00:00 → 2026-10-16T00:37:48.170+00:00 magnitude type: m → mb

  3. 16.10.2026 14:52:51 · SISTEM · recompute

    depth: 10 → 15 latitude: 35.3246 → 35.4506 longitude: 99.4947 → 99.5208 magnitude: 3.1 → 4 time: 2026-10-16T00:37:46.842Z → 2026-10-16 00:37:48.170+00:00 magnitude type: m → mb

  4. 16.10.2026 07:18:41 · EMSC · update

    latitude: 35.38 → 35.3246 longitude: 99.55 → 99.4947 time: 2026-10-16T00:37:42.000+00:00 → 2026-10-16T00:37:46.842+00:00

  5. 16.10.2026 07:18:41 · SISTEM · recompute

    latitude: 35.38 → 35.3246 longitude: 99.55 → 99.4947 time: 2026-10-16T00:37:42.000Z → 2026-10-16 00:37:46.842+00:00

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