Early-est:     Near Coast of Central Chile    2026.10.12-18:17:18.29    q:B      mb:4.7    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: 4.7 [10]    Mwp: 4.3X [2]    Mwpd: - [0] Region: Near Coast of Central Chile Origin Time: 2026.10.12-18:17:18.29 UTC Hypocenter: lat: -33.64°  lon: -71.90°  [+/-16km]    depth: 10km  [+/-15km] Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 20   usedPhases: 17 minDist: 1.1°   maxDist: 144.1°   AzGap: 97°   2ndAzGap: 127°   atten: -1.02 [+/-0.21] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 16km   azMaxHorUnc: 93° 68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 93°   majorAxisPlunge: 4°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 190°   intermediateAxisPlunge: 54°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [8]    Td: -s [0]    Td*T50Ex: - [0]    To: 3.2s [5] Closest plate boundaries:    Nazca \ South America [subduction zone]: distance: ~90km Subduction geometry:    Zone: South America    Slab depth at epicenter: 24km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (90km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        10km        10km        10km Slab depth at epicenter:        24km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 174°   dip: 16°   rake: -0° Nodal Plane 2: strike: 264°   dip: 90°   rake: -106° Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 4.8   misfit: 0.09   stationDistributionRatio: 0.32   meanDistP: 44.9   meanDistT: 37.8   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 283°   dip: 80°   rake: -156° Nodal Plane 2: strike: 188°   dip: 66°   rake: -10° Quality: azimuthalGap: 102°   stationPolarityCount: 13   misfit: 0.27   stationDistributionRatio: 0.61   rmsAngDiffAccPref: 47.06   fracAcc30degPref: 0.36   qualityCode: D 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/1791829038995
Event info last updated: 2026.10.12-19:17:22 UTC
Event first association/location: 2026.10.12-18:19:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI