Early-est:     Near Coast of Central Chile    2025.12.10-06:38:25.83    q:B      mb:5.1    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: 5.1 [21]    Mwp: 4.8X [2]    Mwpd: - [0] Region: Near Coast of Central Chile Origin Time: 2025.12.10-06:38:25.83 UTC Hypocenter: lat: -28.93°  lon: -71.54°  [+/-13km]    depth: 17km  [+/-20km] Location Quality: qualityCode:  B     stdErr: 1.4s   assocPhases: 69   usedPhases: 41 minDist: 4.1°   maxDist: 152.7°   AzGap: 93°   2ndAzGap: 115°   atten: -1.28 [+/-0.26] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 13km   azMaxHorUnc: 84° 68%ConfEllipsoid:   semiMajorAxisLength: 20km   majorAxisAzimuth: 285°   majorAxisPlunge: 82°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 81°   intermediateAxisPlunge: 8°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: 88% T50Ex: 0.7 [20]    Td: 1.5Xs [1]    Td*T50Ex: - [0]    To: 26.3s [11] Closest plate boundaries:    Nazca \ South America [subduction zone]: distance: ~90km Subduction geometry:    Zone: South America    Slab depth at epicenter: 23km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (90km)  no  no Prob underwater:  88%  88%  88% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        17km        17km        17km Slab depth at epicenter:        23km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 87°   dip: 9°   rake: 20° Nodal Plane 2: strike: 338°   dip: 87°   rake: 98° Quality: azimuthalGap: -1°   stationPolarityCount: 34   misfitWeightCount: 8.0   misfit: 0.10   stationDistributionRatio: 0.64   meanDistP: 23.3   meanDistT: 26.7   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: 182°   dip: 7°   rake: 110° Nodal Plane 2: strike: 342°   dip: 83°   rake: 88° Quality: azimuthalGap: 92°   stationPolarityCount: 34   misfit: 0.26   stationDistributionRatio: 0.62   rmsAngDiffAccPref: 21.01   fracAcc30degPref: 0.91   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/1765348705862
Event info last updated: 2025.12.10-07:39:06 UTC
Event first association/location: 2025.12.10-06:43:51 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI