Magnitude 5.4, Sun May 17 2026 3:58 AM


Download Event Information


Origin


PublicID 2026p366672
UTC Time 2026-05-16T15:58:04Z
Latitude -17.84 (± 0.0 km)
Longitude 169.10 (± 0.0 km)
Depth 10 km (± 0 km)
Depth Type operator assigned
Earth Model
Used Phase Count 0
Used Station Count 0
Standard Error 1.54 (s)
Azimuthal Gap 0.00 (degrees)
Minimum Distance 0.00 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (mB) 5.4 (± 0.3)  
MLv 5.1 (± 0.1) 2
ML 5.1 (± 0.1) 2
mB 5.4 (± 0.3) 13
Mw(mB) 4.8 (± 0.4) 13
mB 5.7 (± 0.3) 4
Mw(mB) 5.2 (± 0.4) 4
M 4.9 13

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


-4.0-3.0-2.0-1.00.01.02.03.04.0residual (s)024681012141618202224262830323436384042444648505254565860Distance (degrees)Pick Residuals

Station Magnitudes (MLv)


0.01.02.03.04.05.06.0Magnitude4Distance (degrees)Station Magnitudes (MLv)

Station Magnitudes (ML)


0.01.02.03.04.05.06.0Magnitude4Distance (degrees)Station Magnitudes (ML)

Station Magnitudes (mB)


0.01.02.03.04.05.06.07.0Magnitude91113151719212325Distance (degrees)Station Magnitudes (mB)

Station Magnitudes (mB)


0.01.02.03.04.05.06.07.0Magnitude9111315171921Distance (degrees)Station Magnitudes (mB)

Magnitude Residuals (MLv)


-1.00.01.0Residual4Distance (degrees)Magnitude Residuals (MLv)

Magnitude Residuals (ML)


-1.00.01.0Residual4Distance (degrees)Magnitude Residuals (ML)

Magnitude Residuals (mB)


-1.00.01.0Residual91113151719212325Distance (degrees)Magnitude Residuals (mB)

Magnitude Residuals (mB)


-1.00.01.0Residual9111315171921Distance (degrees)Magnitude Residuals (mB)