Early-est:     Vanuatu Islands    2026.08.09-07:05:40.95    q:B      mb:4.2*    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: 4.2* [11]    Mwp: - [0]    Mwpd: - [0] Region: Vanuatu Islands Origin Time: 2026.08.09-07:05:40.95 UTC Hypocenter: lat: -14.01°  lon: 166.89°  [+/-20km]    depth: 265km  [+/-22km] Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 41   usedPhases: 18 minDist: 7.0°   maxDist: 147.0°   AzGap: 132°   2ndAzGap: 186°   atten: -1.18 [+/-0.36] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 20km   azMaxHorUnc: 165° 68%ConfEllipsoid:   semiMajorAxisLength: 26km   majorAxisAzimuth: 170°   majorAxisPlunge: 34°   semiIntermediateAxisLength: 21km   intermediateAxisAzimuth: 312°   intermediateAxisPlunge: 49°   semiMinorAxisLength: 17km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5X [3]    Td: -s [0]    Td*T50Ex: - [0]    To: 15.5Xs [2] Closest plate boundaries:    New Hebrides - Pacific [continental convergent boundary]: distance: ~50km    New Hebrides / Australia [subduction zone]: distance: ~70km    Pacific / Australia [subduction zone]: distance: ~80km 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 (70km)  YES (50km)  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        265km        265km        265km 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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 332°   dip: 63°   rake: 154° Nodal Plane 2: strike: 74°   dip: 67°   rake: 30° Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 4.9   misfit: 0.07   stationDistributionRatio: 0.48   meanDistP: 49.8   meanDistT: 46.3   qualityCode: D 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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 324°   dip: 77°   rake: 140° Nodal Plane 2: strike: 65°   dip: 52°   rake: 17° Quality: azimuthalGap: 90°   stationPolarityCount: 13   misfit: 0.44   stationDistributionRatio: 0.58   rmsAngDiffAccPref: 41.64   fracAcc30degPref: 0.39   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1786259141595
Event info last updated: 2026.08.09-08:04:05 UTC
Event first association/location: 2026.08.09-07:11:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA