Magnitude 4.0, Sat Apr 18 2026 10:36 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


0.01.02.03.04.05.0Magnitude01234Time since earthquake (weeks)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


010203040Depth (km)01234Time since earthquake (weeks)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
2026-05-22T03:59:00Z best 4.0 33.0 -33.19 -177.75
2026-04-18T02:00:05Z best 4.0 33.0 -33.16 -177.66
2026-04-17T22:45:16Z preliminary 4.0 33.0 -33.15 -177.82
2026-04-17T22:45:16Z preliminary 4.3 33.0 -33.15 -177.82
2026-04-17T22:40:18Z automatic 2.6 8.9 -37.30 178.38
2026-04-17T22:40:06Z automatic 2.5 8.9 -37.30 178.38
2026-04-17T22:39:42Z automatic 2.4 8.9 -37.30 178.38
2026-04-17T22:39:31Z automatic 2.4 8.9 -37.30 178.38
2026-04-17T22:39:19Z automatic 2.3 8.9 -37.30 178.38
2026-04-17T22:39:12Z automatic 2.3 8.9 -37.30 178.38
2026-04-17T22:39:05Z automatic 2.5 8.9 -37.30 178.38