Early-est:     Vanuatu Islands    2026.06.18-12:48:46.58    q:B      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: Vanuatu Islands Origin Time: 2026.06.18-12:48:46.58 UTC Hypocenter: lat: -18.97°  lon: 169.22°  [+/-15km]    depth: 236km  [+/-16km] Location Quality: qualityCode:  B     stdErr: 0.6s   assocPhases: 9   usedPhases: 9 minDist: 2.7°   maxDist: 97.9°   AzGap: 151°   2ndAzGap: 296°   atten: -1.31 [+/-0.15] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 15km   azMaxHorUnc: 3° 68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 184°   majorAxisPlunge: 9°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 346°   intermediateAxisPlunge: 81°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: 79% T50Ex: - [0]    Td: -s [0]    Td*T50Ex: - [0]    To: -s [0] Closest plate boundaries:    New Hebrides / Australia [subduction zone]: distance: ~150km Subduction geometry:    Zone: Santa Cruz Islands/Vanuatu/Loyalty Islands: 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 (150km)  no  no Prob underwater:  79%  79%  79% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        236km        236km        236km 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: 0°   stationPolarityCount: 5   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: F Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1781786925491
Event info last updated: 2026.06.18-13:47:00 UTC
Event first association/location: 2026.06.18-13:03:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA