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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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3.0

7 km N of Alex, Oklahoma

12 October 2026, 08:38:55 (+03) 2026-10-12 05:38:55 UTC

2 sources: EMSC, USGS mb_lg
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Magnitude
3.0 mb_lg
Depth
10.1 km
Coordinates
34.9780, -97.7877
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
1
Last 7 days
7
Last 30 days
11

Approximate energy released

≈ 0.5 t TNT

2.00e+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?

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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 Felt reports: 4

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 7
  • M2 5
  • M3 2
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 11
  • 10–20 km 3
  • 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

Sources report different values.
Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
OKLAHOMA
 2.8 ml 7.9 km 05:38:55.520 Δt 0.23 sn · 1.29 km · ΔM -0.2 Original record
USGS Earthquake Hazards Program Displayed
7 km N of Alex, Oklahoma
 3.0 mb_lg 10.1 km 05:38:55.294 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. 12.10.2026 15:15:42 · EMSC · update

    depth: 10.1 → 7.9 latitude: 34.978 → 34.981 longitude: -97.7877 → -97.774 magnitude: 3 → 2.8 time: 2026-10-12T05:38:55.294+00:00 → 2026-10-12T05:38:55.520+00:00

  2. 12.10.2026 09:37:35 · SISTEM · recompute

    depth: 10.1 → 10.05 source count: 1 → 2 review status: automatic → reviewed magnitude type: ml → mb_lg confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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