Magnitude 3.3, Sat Apr 25 2026 5:41 PM


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Origin


PublicID 2026p308750
UTC Time 2026-04-25T05:41:34Z
Latitude -34.90 (± 41.3 km)
Longitude -178.25 (± 44.7 km)
Depth 100 km (± 0 km)
Depth Type operator assigned
Earth Model iasp91
Used Phase Count 10
Used Station Count 7
Standard Error 0.62 (s)
Azimuthal Gap 351.75 (degrees)
Minimum Distance 3.97 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (Mw(mB)) 3.3 (± 0.5)  
MLv 3.5 (± 0.2) 3
mB 4.2 (± 0.5) 3
Mw(mB) 3.3 (± 0.5) 3
M 3.5 3

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


-2.0-1.00.01.02.0residual (s)012345Distance (degrees)Pick Residuals

Station Magnitudes (MLv)


0.01.02.03.04.0MagnitudeDistance (degrees)Station Magnitudes (MLv)

Station Magnitudes (mB)


0.01.02.03.04.05.0MagnitudeDistance (degrees)Station Magnitudes (mB)

Magnitude Residuals (MLv)


-1.00.01.0ResidualDistance (degrees)Magnitude Residuals (MLv)

Magnitude Residuals (mB)


-1.00.01.0ResidualDistance (degrees)Magnitude Residuals (mB)