Early-est:     Vanuatu Islands    2025.08.01-04:59:40.69    q:B      mb:4.8*    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: 4.8* [19]    Mwp: - [0]    Mwpd: - [0] Region: Vanuatu Islands Origin Time: 2025.08.01-04:59:40.69 UTC Hypocenter: lat: -13.42°  lon: 166.75°  [+/-12km]    depth: 177km  [+/-14km] Location Quality: qualityCode:  B     stdErr: 2.2s   assocPhases: 80   usedPhases: 41 minDist: 2.1°   maxDist: 152.7°   AzGap: 91°   2ndAzGap: 121°   atten: -0.94 [+/-0.25] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 12km   azMaxHorUnc: 40° 68%ConfEllipsoid:   semiMajorAxisLength: 16km   majorAxisAzimuth: 53°   majorAxisPlunge: 27°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 166°   intermediateAxisPlunge: 37°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: 97% T50Ex: 0.4 [14]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.8s [13] Closest plate boundaries:    New Hebrides - Pacific [continental convergent boundary]: distance: ~50km    Pacific / Australia [subduction zone]: distance: ~70km    New Hebrides / 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:  97%  97%  97% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        177km        177km        177km 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: 313°   dip: 9°   rake: 98° Nodal Plane 2: strike: 124°   dip: 81°   rake: 89° Quality: azimuthalGap: -1°   stationPolarityCount: 22   misfitWeightCount: 7.5   misfit: 0.11   stationDistributionRatio: 0.66   meanDistP: 36.3   meanDistT: 42.7   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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 247°   dip: 20°   rake: 19° Nodal Plane 2: strike: 139°   dip: 84°   rake: 109° Quality: azimuthalGap: 92°   stationPolarityCount: 22   misfit: 0.35   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 41.41   fracAcc30degPref: 0.52   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754024385610
Event info last updated: 2025.08.01-05:58:01 UTC
Event first association/location: 2025.08.01-05:07:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA