Early-est:     South of Fiji Islands    2026.08.11-03:11:17.40    q:A      mb:4.5*    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: 4.5* [22]    Mwp: - [0]    Mwpd: - [0] Region: South of Fiji Islands Origin Time: 2026.08.11-03:11:17.40 UTC Hypocenter: lat: -23.66°  lon: -179.17°  [+/-12km]    depth: 552km  [+/-16km] Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 46   usedPhases: 31 minDist: 5.7°   maxDist: 156.2°   AzGap: 117°   2ndAzGap: 155°   atten: -1.55 [+/-0.31] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 12km   azMaxHorUnc: 173° 68%ConfEllipsoid:   semiMajorAxisLength: 16km   majorAxisAzimuth: 140°   majorAxisPlunge: 74°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 359°   intermediateAxisPlunge: 12°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.3 [15]    Td: 0.3Xs [1]    Td*T50Ex: - [0]    To: 3.6s [15] Closest plate boundaries:    Kermadec - Australia [continental rift boundary]: distance: ~180km    Kermadec - Tonga [continental rift boundary]: distance: ~180km    Tonga - Australia [continental rift boundary]: distance: ~180km    Kermadec / Pacific [subduction zone]: distance: ~410km    Tonga / Pacific [subduction zone]: distance: ~430km Subduction geometry:    Zone: Kermadec-Tonga: DEBUG: error: [Errno 2] No such file or directory: 'gmt'    Slab depth at epicenter: error: evaluating slab depth: -999.9 Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (410km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        552km        552km        552km 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):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 154°   dip: 45°   rake: -77° Nodal Plane 2: strike: 316°   dip: 46°   rake: -103° Quality: azimuthalGap: -1°   stationPolarityCount: 28   misfitWeightCount: 10.5   misfit: 0.10   stationDistributionRatio: 0.52   meanDistP: 38.7   meanDistT: 37.4   qualityCode: C 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):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 178°   dip: 57°   rake: -67° Nodal Plane 2: strike: 319°   dip: 39°   rake: -121° Quality: azimuthalGap: 63°   stationPolarityCount: 28   misfit: 0.40   stationDistributionRatio: 0.57   rmsAngDiffAccPref: 33.57   fracAcc30degPref: 0.74   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1786417875835
Event info last updated: 2026.08.11-04:10:00 UTC
Event first association/location: 2026.08.11-03:15:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA