Magnitude 1.6, Tue Apr 22 2025 5:17 AM


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


0.01.02.0Magnitude0123456Time since earthquake (minutes)Magnitude Historyb

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


0100Depth (km)0123456Time since earthquake (minutes)Depth Historyb

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
2025-04-21T17:23:18Z best 1.6 95.7 -40.86 173.30
2025-04-21T17:18:37Z preliminary 1.9 97.1 -40.83 173.29
2025-04-21T17:18:37Z automatic 1.8 97.0 -40.89 173.32