Early-est:     South of Fiji Islands    2026.10.09-15:18:56.05    q:A      mb:4.7    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: 4.7 [44]    Mwp: - [0]    Mwpd: - [0] Region: South of Fiji Islands Origin Time: 2026.10.09-15:18:56.05 UTC Hypocenter: lat: -24.71°  lon: -179.95°  [+/-15km]    depth: 502km  [+/-18km] Location Quality: qualityCode:  A     stdErr: 1.2s   assocPhases: 117   usedPhases: 80 minDist: 7.2°   maxDist: 155.7°   AzGap: 75°   2ndAzGap: 123°   atten: -1.12 [+/-0.23] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 42° 68%ConfEllipsoid:   semiMajorAxisLength: 20km   majorAxisAzimuth: 43°   majorAxisPlunge: 41°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 212°   intermediateAxisPlunge: 49°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.0 [31]    Td: -s [0]    Td*T50Ex: - [0]    To: 0.9s [26] Closest plate boundaries: Subduction geometry:    Zone: Kermadec-Tonga    Slab depth at epicenter: 487km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  no  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        502km        502km        502km Slab depth at epicenter:        487km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 29°   dip: 56°   rake: -173° Nodal Plane 2: strike: 295°   dip: 84°   rake: -34° Quality: azimuthalGap: -1°   stationPolarityCount: 69   misfitWeightCount: 16.7   misfit: 0.19   stationDistributionRatio: 0.59   meanDistP: 28.2   meanDistT: 36.4   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 322°   dip: 37°   rake: 58° Nodal Plane 2: strike: 180°   dip: 59°   rake: 112° Quality: azimuthalGap: 83°   stationPolarityCount: 69   misfit: 0.32   stationDistributionRatio: 0.50   rmsAngDiffAccPref: 32.93   fracAcc30degPref: 0.70   qualityCode: D 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/1791559135612
Event info last updated: 2026.10.09-16:19:04 UTC
Event first association/location: 2026.10.09-15:24:03 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI