Early-est:     Solomon Islands    2025.06.07-04:44:15.41    q:B      mb:4.8    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 4.8 [32]    Mwp: - [0]    Mwpd: - [0] Region: Solomon Islands Origin Time: 2025.06.07-04:44:15.41 UTC Hypocenter: lat: -7.11°  lon: 155.74°  [+/-14km]    depth: 91km  [+/-17km] Location Quality: qualityCode:  B     stdErr: 0.7s   assocPhases: 61   usedPhases: 38 minDist: 8.8°   maxDist: 147.3°   AzGap: 94°   2ndAzGap: 108°   atten: -0.83 [+/-0.23] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 76° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 260°   majorAxisPlunge: 38°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 56°   intermediateAxisPlunge: 50°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.3 [19]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.5s [13] Closest plate boundaries:    Woodlark - Solomon Sea [oceanic transform fault]: distance: ~50km    Pacific / Solomon Sea [subduction zone]: distance: ~50km    Pacific / Woodlark [subduction zone]: distance: ~50km    Pacific - North Bismarck [oceanic convergent boundary]: distance: ~90km    North Bismarck / Solomon Sea [subduction zone]: distance: ~90km Subduction geometry:    Zone: Solomon Islands    Slab depth at epicenter: 28km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (50km)  YES (90km)  YES (50km) Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        91km        91km        91km Slab depth at epicenter:        28km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 5°   dip: 29°   rake: -29° Nodal Plane 2: strike: 121°   dip: 76°   rake: -116° Quality: azimuthalGap: -1°   stationPolarityCount: 33   misfitWeightCount: 11.1   misfit: 0.19   stationDistributionRatio: 0.59   meanDistP: 30.3   meanDistT: 34.4   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 271°   dip: 52°   rake: -174° Nodal Plane 2: strike: 177°   dip: 85°   rake: -38° Quality: azimuthalGap: 100°   stationPolarityCount: 33   misfit: 0.33   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 32.70   fracAcc30degPref: 0.62   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (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/_amp_aref
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (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/_amp_mwp

Event ID: smi:KOERI/ee/event/1749271458310
Event info last updated: 2025.06.07-05:44:27 UTC
Event first association/location: 2025.06.07-04:50:09 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI