Magnitude 4.2, Wed Aug 20 2025 8:39 PM


Location history for this earthquake. The automatic earthquake location system makes many locations for each quake. Not all quakes have a location history.

Magnitude History


0.01.02.03.04.05.0Magnitude0123456789101112131415161718Time since earthquake (minutes)Magnitude Historyp

The magnitude history for this event. The most recent value is shown as a larger circle and also labeled: c: caution, g: good b: best (reviewed by a duty person).

Depth History


0100200300400500600700Depth (km)0123456789101112131415161718Time since earthquake (minutes)Depth Historyp

The depth history for this event. The most recent value is shown as a larger circle and also labeled; c: caution, g: good b: best (reviewed by a duty person).

Origin History Map

Map of New Zealand.

Location History


Modification Time Quality Magnitude Depth Latitude Longitude
2025-08-20T08:58:03Z preliminary 4.2 600.0 -25.23 -176.90
2025-08-20T08:45:14Z automatic 1.4 114.7 -39.22 175.46
2025-08-20T08:44:10Z automatic 1.4 114.7 -39.22 175.46
2025-08-20T08:44:10Z automatic 1.4 114.7 -39.22 175.46
2025-08-20T08:43:26Z automatic 1.0 114.7 -39.22 175.46
2025-08-20T08:43:09Z automatic 1.0 103.5 -39.13 175.92
2025-08-20T08:43:08Z automatic 1.1 103.5 -39.13 175.92