Early-est:     Off Coast of Central Chile    2025.12.07-09:35:46.72    q:C      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 [5]    Mwp: - [0]    Mwpd: - [0] Region: Off Coast of Central Chile Origin Time: 2025.12.07-09:35:46.72 UTC Hypocenter: lat: -34.71°  lon: -74.08°  [+/-19km]    depth: 87km  [+/-30km] Location Quality: qualityCode:  C     stdErr: 1.4s   assocPhases: 12   usedPhases: 11 minDist: 2.2°   maxDist: 117.9°   AzGap: 189°   2ndAzGap: 227°   atten: -0.81 [+/-0.37] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 19km   azMaxHorUnc: 98° 68%ConfEllipsoid:   semiMajorAxisLength: 33km   majorAxisAzimuth: 93°   majorAxisPlunge: 59°   semiIntermediateAxisLength: 20km   intermediateAxisAzimuth: 287°   intermediateAxisPlunge: 30°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [5]    Td: 0.7Xs [1]    Td*T50Ex: - [0]    To: -s [0] Closest plate boundaries:    Nazca \ South America [subduction zone]: distance: ~40km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (40km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        87km        87km        87km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (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/_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: 0°   stationPolarityCount: 7   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: F 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/1765100146568
Event info last updated: 2025.12.07-10:36:03 UTC
Event first association/location: 2025.12.07-09:49:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI