Magnitude 2.4, Fri Jun 27 2025 5:25 AM


Download Event Information


Origin


PublicID 2025p477638
UTC Time 2025-06-26T17:25:47Z
Latitude -37.44 (± 10.2 km)
Longitude 177.27 (± 8.0 km)
Depth 37 km (± 11 km)
Depth Type free
Earth Model iasp91
Used Phase Count 14
Used Station Count 9
Standard Error 0.64 (s)
Azimuthal Gap 270.43 (degrees)
Minimum Distance 0.52 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (MLv) 2.4 (± 0.1)  
ML 2.4 (± 0.2) 7
MLv 2.4 (± 0.1) 2
M 2.4 2

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)012Distance (degrees)Pick Residuals

Station Magnitudes (ML)


0.01.02.03.0Magnitude1Distance (degrees)Station Magnitudes (ML)

Station Magnitudes (MLv)


0.01.02.03.0Magnitude1Distance (degrees)Station Magnitudes (MLv)

Magnitude Residuals (ML)


-1.00.01.0Residual1Distance (degrees)Magnitude Residuals (ML)

Magnitude Residuals (MLv)


-1.00.01.0Residual1Distance (degrees)Magnitude Residuals (MLv)