Magnitude 2.8, Fri Jan 16 2026 2:55 AM


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Origin


PublicID 2026p039405
UTC Time 2026-01-15T13:55:11Z
Latitude -37.37 (± 61.5 km)
Longitude 176.62 (± 117.9 km)
Depth 46 km (± 114 km)
Depth Type free
Earth Model nz3drx
Used Phase Count 8
Used Station Count 8
Standard Error 1.46 (s)
Azimuthal Gap 268.30 (degrees)
Minimum Distance 0.98 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (M) 2.8  
MLv 2.8 (± 0.5) 4
M 2.8 4
ML 2.4 (± 0.4) 7

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


-6.0-4.0-2.00.02.04.06.0residual (s)012Distance (degrees)Pick Residuals

Station Magnitudes (MLv)


0.01.02.03.04.0MagnitudeDistance (degrees)Station Magnitudes (MLv)

Station Magnitudes (ML)


0.01.02.03.04.0Magnitude1Distance (degrees)Station Magnitudes (ML)

Magnitude Residuals (MLv)


-1.00.01.0ResidualDistance (degrees)Magnitude Residuals (MLv)

Magnitude Residuals (ML)


-2.0-1.00.01.02.0Residual1Distance (degrees)Magnitude Residuals (ML)