Magnitude 2.5, Tue Jun 2 2026 2:36 AM


Download Event Information


Origin


PublicID 2026p409753
UTC Time 2026-06-01T14:36:50Z
Latitude -36.68 (± 27.4 km)
Longitude 177.07 (± 42.3 km)
Depth 239 km (± 36 km)
Depth Type free
Earth Model iasp91
Used Phase Count 12
Used Station Count 8
Standard Error 0.26 (s)
Azimuthal Gap 318.31 (degrees)
Minimum Distance 1.22 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (M) 2.5  
MLv 2.5 (± 0.3) 4
M 2.5 4

GeoNet combines magnitudes into a summary magnitude, M, which consists of a weighted average of the individual magnitudes and attempts to be a best possible compromise between all magnitudes for a range of earthquake sizes. Summary magnitude for GeoNet is then defined as:

M = (2 * MLv + (0.4 * number_of stations(Mw(mB)) - 1) * Mw(mB)) / (2 + (0.4 * number_of_stations(Mw(mB)) - 1))

Where MLv is local magnitude calculated on the vertical component and Mw(mB) is a Mw estimation based of mB by Bormann and Saul (2008).

Origin Map


Map of New Zealand.

Map showing stations with picks used to locate the earthquake. Stations with picks that have a zero weight in the solution are shown as small grey circles. Those with a higher weight are shown as larger circles. The quake is shown by the largest circle.

Pick Residuals


-3.0-2.0-1.00.01.02.03.0residual (s)01234Distance (degrees)Pick Residuals

Station Magnitudes (MLv)


0.01.02.03.0Magnitude23Distance (degrees)Station Magnitudes (MLv)

Magnitude Residuals (MLv)


-1.00.01.0Residual23Distance (degrees)Magnitude Residuals (MLv)