Early-est:     Southern Bolivia    2026.10.06-06:54:11.78    q:B      mb:4.1    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: 4.1 [8]    Mwp: - [0]    Mwpd: - [0] Region: Southern Bolivia Origin Time: 2026.10.06-06:54:11.78 UTC Hypocenter: lat: -19.81°  lon: -67.52°  [+/-17km]    depth: 213km  [+/-16km] Location Quality: qualityCode:  B     stdErr: 0.8s   assocPhases: 18   usedPhases: 15 minDist: 3.0°   maxDist: 48.3°   AzGap: 99°   2ndAzGap: 151°   atten: -1.62 [+/-0.56] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 17km   azMaxHorUnc: 24° 68%ConfEllipsoid:   semiMajorAxisLength: 21km   majorAxisAzimuth: 23°   majorAxisPlunge: 5°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 288°   intermediateAxisPlunge: 42°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.0 [7]    Td: 0.2Xs [1]    Td*T50Ex: - [0]    To: 1.7Xs [3] Closest plate boundaries:    Altiplano - South America [continental rift boundary]: distance: ~190km    Nazca \ Altiplano [subduction zone]: distance: ~400km    Nazca \ South America [subduction zone]: distance: ~460km Subduction geometry:    Zone: South America    Slab depth at epicenter: 182km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (400km)  no  no Prob underwater:  <1%  <1%  <1% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        213km        213km        213km Slab depth at epicenter:        182km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 82°   dip: 27°   rake: 63° Nodal Plane 2: strike: 291°   dip: 66°   rake: 103° Quality: azimuthalGap: -1°   stationPolarityCount: 15   misfitWeightCount: 7.6   misfit: 0.05   stationDistributionRatio: 0.39   meanDistP: 29.0   meanDistT: 37.9   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (No solution available) Nodal Plane 1: strike: 999°   dip: 99°   rake: 999° Nodal Plane 2: strike: 324°   dip: 13°   rake: 135° Quality: azimuthalGap: 190°   stationPolarityCount: 15   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E 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: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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/1791269651744
Event info last updated: 2026.10.06-07:54:22 UTC
Event first association/location: 2026.10.06-06:58:38 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI