Early-est:     Solomon Islands    2026.10.02-11:14:29.47    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* [13]    Mwp: - [0]    Mwpd: - [0] Region: Solomon Islands Origin Time: 2026.10.02-11:14:29.47 UTC Hypocenter: lat: -6.76°  lon: 154.20°  [+/-15km]    depth: 105km  [+/-23km] Location Quality: qualityCode:  C     stdErr: 1.1s   assocPhases: 33   usedPhases: 9 minDist: 3.3°   maxDist: 159.2°   AzGap: 80°   2ndAzGap: 106°   atten: -1.46 [+/-1.23] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 12° 68%ConfEllipsoid:   semiMajorAxisLength: 24km   majorAxisAzimuth: 348°   majorAxisPlunge: 67°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 217°   intermediateAxisPlunge: 16°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [8]    Td: 0.4Xs [1]    Td*T50Ex: - [0]    To: 22.0s [7] Closest plate boundaries:    North Bismarck / Solomon Sea [subduction zone]: distance: ~30km    Pacific - North Bismarck [continental transform fault]: distance: ~50km    North Bismarck - South Bismarck [oceanic transform fault]: distance: ~60km    South Bismarck / Solomon Sea [subduction zone]: distance: ~60km    Pacific / Solomon Sea [subduction zone]: distance: ~100km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (30km)  no  YES (50km) Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        105km        105km        105km 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: 24°   dip: 39°   rake: -35° Nodal Plane 2: strike: 142°   dip: 69°   rake: -124° Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 7.6   misfit: 0.15   stationDistributionRatio: 0.47   meanDistP: 45.3   meanDistT: 52.0   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: 309°   dip: 25°   rake: -150° Nodal Plane 2: strike: 191°   dip: 78°   rake: -68° Quality: azimuthalGap: 125°   stationPolarityCount: 13   misfit: 0.20   stationDistributionRatio: 0.74   rmsAngDiffAccPref: 46.94   fracAcc30degPref: 0.39   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1790939669230
Event info last updated: 2026.10.02-12:13:02 UTC
Event first association/location: 2026.10.02-11:21:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA