Early-est:     Solomon Islands    2026.08.09-18:11:32.36    q:C      mb:4.6*    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: 4.6* [18]    Mwp: - [0]    Mwpd: - [0] Region: Solomon Islands Origin Time: 2026.08.09-18:11:32.36 UTC Hypocenter: lat: -5.60°  lon: 154.46°  [+/-19km]    depth: 130km  [+/-38km] Location Quality: qualityCode:  C     stdErr: 1.1s   assocPhases: 32   usedPhases: 22 minDist: 2.7°   maxDist: 85.4°   AzGap: 120°   2ndAzGap: 128°   atten: -0.83 [+/-0.42] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 17km   maxHorUnc: 19km   azMaxHorUnc: 55° 68%ConfEllipsoid:   semiMajorAxisLength: 38km   majorAxisAzimuth: 10°   majorAxisPlunge: 78°   semiIntermediateAxisLength: 24km   intermediateAxisAzimuth: 244°   intermediateAxisPlunge: 7°   semiMinorAxisLength: 20km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.2 [9]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.1s [8] Closest plate boundaries:    Pacific - North Bismarck [continental transform fault]: distance: ~20km    North Bismarck - South Bismarck [oceanic transform fault]: distance: ~90km    South Bismarck / Solomon Sea [subduction zone]: distance: ~90km    North Bismarck / Solomon Sea [subduction zone]: distance: ~90km    Pacific / Solomon Sea [subduction zone]: distance: ~190km Subduction geometry:    Zone: Solomon 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 (90km)  no  YES (20km) Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        130km        130km        130km 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: 165°   dip: 25°   rake: -90° Nodal Plane 2: strike: 345°   dip: 65°   rake: -90° Quality: azimuthalGap: -1°   stationPolarityCount: 22   misfitWeightCount: 7.5   misfit: 0.09   stationDistributionRatio: 0.51   meanDistP: 44.2   meanDistT: 48.8   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: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 149°   dip: 8°   rake: -55° Nodal Plane 2: strike: 294°   dip: 84°   rake: -94° Quality: azimuthalGap: 129°   stationPolarityCount: 22   misfit: 0.24   stationDistributionRatio: 0.82   rmsAngDiffAccPref: 41.73   fracAcc30degPref: 0.40   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1786299092218
Event info last updated: 2026.08.09-19:10:00 UTC
Event first association/location: 2026.08.09-18:17:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA