Magnitude 3.5, Mon Aug 18 2025 4:00 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


0.01.02.03.04.0Magnitude012345678910Time 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


0100200Depth (km)012345678910Time 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
2025-08-17T16:10:55Z best 3.5 213.5 -35.02 179.18
2025-08-17T16:03:47Z preliminary 3.5 195.9 -35.01 179.14
2025-08-17T16:03:20Z automatic 2.0 48.7 -37.67 178.03
2025-08-17T16:03:14Z automatic 1.9 48.7 -37.67 178.03
2025-08-17T16:03:12Z automatic 1.9 48.7 -37.67 178.03
2025-08-17T16:03:10Z automatic 1.5 48.7 -37.67 178.03
2025-08-17T16:03:03Z automatic 1.2 48.7 -37.67 178.03
2025-08-17T16:03:01Z automatic 1.0 48.7 -37.67 178.03