Early-est:     Cook Strait, New Zealand    2025.08.06-18:34:53.12    q:C      mb:-    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     fmamp_polarity_waveform:     hash:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 4.6X [2]    Mwp: - [0]    Mwpd: - [0] Region: Cook Strait, New Zealand Origin Time: 2025.08.06-18:34:53.12 UTC Hypocenter: lat: -41.97°  lon: 174.28°  [+/-12km]    depth: 71km  [+/-18km] Location Quality: qualityCode:  C     stdErr: 1.1s   assocPhases: 13   usedPhases: 7 minDist: 0.7°   maxDist: 146.2°   AzGap: 79°   2ndAzGap: 101°   atten: -9.90 [+/-0.00] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 12km   azMaxHorUnc: 130° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 62°   majorAxisPlunge: 84°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 311°   intermediateAxisPlunge: 2°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: - [0]    Td: -s [0]    Td*T50Ex: - [0]    To: -s [0] Closest plate boundaries:    Australia - Pacific [continental transform fault]: distance: ~30km    Kermadec - Australia [continental convergent boundary]: distance: ~60km    Kermadec / Pacific [subduction zone]: distance: ~100km    Australia \ Pacific [subduction zone]: distance: ~500km    Pacific / Australia [subduction zone]: distance: ~680km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (100km)  YES (60km)  YES (30km) Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        71km        71km        71km Slab depth at epicenter:        n/a        -        - Tsunami and Rupture predictions (TEST!): No prediction: Event too small (Mwp<7.0) or too few Mwp readings (N<20)

First-motion Focal Mechanism (FMAMP_POLARITY):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: 0° Nodal Plane 2: strike: 270°   dip: 90°   rake: 90° Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: 0° Nodal Plane 2: strike: 270°   dip: 90°   rake: 90° Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
First-motion Focal Mechanism (HASH):    (No solution available) Nodal Plane 1: strike: 999°   dip: 99°   rake: 999° Nodal Plane 2: strike: 324°   dip: 13°   rake: 135° Quality: azimuthalGap: 83°   stationPolarityCount: 7   misfit: 0.99   stationDistributionRatio: 0.64   rmsAngDiffAccPref: 23.65   fracAcc30degPref: 0.00   qualityCode: F Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754505293083
Event info last updated: 2025.08.06-19:33:00 UTC
Event first association/location: 2025.08.06-18:44:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA