Early-est:     Chile - Argentina Border Region    2025.12.11-03:07:18.44    q:C      mb:-    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1765422438443.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765422438443.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765422438443.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765422438443.mech.fmamp_amp_mwp.thumb.jpg

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

Earthquake Details:
Magnitude: mb: - [0]    Mwp: - [0]    Mwpd: - [0]
Region: Chile - Argentina Border Region
Origin Time: 2025.12.11-03:07:18.44 UTC
Hypocenter: lat: -32.21°  lon: -70.94°  [+/-14km]    depth: 20km  [+/-35km]
Location Quality: qualityCode:  C     stdErr: 1.5s   assocPhases: 7   usedPhases: 7
minDist: 0.8°   maxDist: 9.4°   AzGap: 179°   2ndAzGap: 197°   atten: -9.90 [+/-0.00]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 14km   azMaxHorUnc: 86°
68%ConfEllipsoid:   semiMajorAxisLength: 35km   majorAxisAzimuth: 205°   majorAxisPlunge: 83°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 90°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: - [0]    Td: -s [0]    Td*T50Ex: - [0]    To: -s [0]
Closest plate boundaries:
   Nazca \ South America [subduction zone]: distance: ~170km
Subduction geometry:    Zone: South America    Slab depth at epicenter: 60km
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (170km)
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       20km
       20km
       20km
Slab depth at epicenter:
       60km
       -
       -
./hypo.1765422438443.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (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/_polarity
./hypo.1765422438443.mech.fmamp_polarity.mechanism.jpg
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: 94°   stationPolarityCount: 4   misfit: 0.99   stationDistributionRatio: 0.54   rmsAngDiffAccPref: 39.44   fracAcc30degPref: 0.00   qualityCode: F
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765422438443.mech.hash.mechanism.jpg
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
./hypo.1765422438443.mech.fmamp_amp_aref.mechanism.jpg
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
./hypo.1765422438443.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765422438443
Event info last updated: 2025.12.11-04:07:40 UTC
Event first association/location: 2025.12.11-04:07:40 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI