Early-est:     Kermadec Islands, New Zealand    2025.01.31-15:58:10.16    q:B      mb:5.0    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

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

Earthquake Details: Magnitude: mb: 5.0 [26]    Mwp: 4.6X [1]    Mwpd: - [0] Region: Kermadec Islands, New Zealand Origin Time: 2025.01.31-15:58:10.16 UTC Hypocenter: lat: -30.75°  lon: -177.65°  [+/-14km]    depth: 17km  [+/-19km] Location Quality: qualityCode:  B     stdErr: 1.9s   assocPhases: 67   usedPhases: 47 minDist: 1.5°   maxDist: 164.0°   AzGap: 75°   2ndAzGap: 82°   atten: -0.74 [+/-0.34] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 10km   maxHorUnc: 14km   azMaxHorUnc: 96° 68%ConfEllipsoid:   semiMajorAxisLength: 20km   majorAxisAzimuth: 108°   majorAxisPlunge: 61°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 269°   intermediateAxisPlunge: 28°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [18]    Td: -s [0]    Td*T50Ex: - [0]    To: 4.0s [14] Closest plate boundaries:    Kermadec / Pacific [subduction zone]: distance: ~80km    Kermadec - Australia [continental rift boundary]: distance: ~160km Subduction geometry:    Zone: Kermadec-Tonga    Slab depth at epicenter: 30km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (80km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        17km        17km        17km Slab depth at epicenter:        30km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 41°   dip: 37°   rake: -105° Nodal Plane 2: strike: 240°   dip: 55°   rake: -79° Quality: azimuthalGap: -1°   stationPolarityCount: 40   misfitWeightCount: 5.8   misfit: 0.04   stationDistributionRatio: 0.65   meanDistP: 33.2   meanDistT: 35.5   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 32°   dip: 39°   rake: -106° Nodal Plane 2: strike: 233°   dip: 53°   rake: -77° Quality: azimuthalGap: 75°   stationPolarityCount: 40   misfit: 0.15   stationDistributionRatio: 0.42   rmsAngDiffAccPref: 23.99   fracAcc30degPref: 0.85   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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/_amp_aref
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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/_amp_mwp

Event ID: smi:KOERI/ee/event/1738339090584
Event info last updated: 2025.01.31-16:58:34 UTC
Event first association/location: 2025.01.31-16:05:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI