Magnitude 3.2, Thu May 29 2025 8:00 PM


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Origin


PublicID 2025p400904
UTC Time 2025-05-29T08:00:50Z
Latitude -31.62 (± 24.4 km)
Longitude 179.86 (± 61.9 km)
Depth 464 km (± 58 km)
Depth Type free
Earth Model iasp91
Used Phase Count 7
Used Station Count 7
Standard Error 0.34 (s)
Azimuthal Gap 352.43 (degrees)
Minimum Distance 6.29 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (Mw(mB)) 3.2 (± 0.4)  
MLv 4.4 (± 0.0) 2
mB 4.1 (± 0.1) 9
Mw(mB) 3.2 (± 0.4) 9
M 3.7 9

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)0123456789Distance (degrees)Pick Residuals

Station Magnitudes (MLv)


0.01.02.03.04.05.0MagnitudeDistance (degrees)Station Magnitudes (MLv)

Station Magnitudes (mB)


0.01.02.03.04.05.0Magnitude789Distance (degrees)Station Magnitudes (mB)

Magnitude Residuals (MLv)


-1.00.01.0ResidualDistance (degrees)Magnitude Residuals (MLv)

Magnitude Residuals (mB)


-1.00.01.0Residual789Distance (degrees)Magnitude Residuals (mB)