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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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4.2

4 km NNE of Mangatainoka, New Zealand

27 September 2026, 13:32:01 (+03) 2026-09-27 10:32:01 UTC

2 sources: EMSC, USGS mb
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Magnitude
4.2 mb
Depth
48.5 km
Coordinates
-40.3738, 175.8819
Data consistency
89/100

Regional activity (100 km)

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

Approximate energy released

≈ 30 t TNT

1.26e+11 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

13 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 8
  • M4 5
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 7
  • 20–40 km 4
  • 40–70 km 2
  • 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
NORTH ISLAND OF NEW ZEALAND
 4.2 mb 29.7 km 10:32:01.100 Δt 0.89 sn · 7.46 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
4 km NNE of Mangatainoka, New Zealand
 4.2 mb 48.5 km 10:32:01.985 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 17:40:29 · EMSC · update

    time: 2026-09-27T10:32:02.287+00:00 → 2026-09-27T10:32:01.100+00:00 magnitude type: ml → mb

  2. 27.09.2026 14:29:38 · SISTEM · recompute

    depth: 29.7 → 48.51 latitude: -40.3101 → -40.3738 longitude: 175.9097 → 175.8819 time: 2026-09-27T10:32:02.287Z → 2026-09-27 10:32:01.985+00:00 source count: 1 → 2 review status: automatic → reviewed magnitude type: ml → mb confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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