Early-est:     Salta Province, Argentina    2025.11.11-15:00:04.10    q:A      mb:4.8    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1762873204236.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1762873204236.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1762873204236.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1762873204236.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: 4.8 [18]    Mwp: - [0]    Mwpd: - [0]
Region: Salta Province, Argentina
Origin Time: 2025.11.11-15:00:04.10 UTC
Hypocenter: lat: -24.80°  lon: -63.58°  [+/-7km]    depth: 585km  [+/-8km]
Location Quality: qualityCode:  A     stdErr: 0.8s   assocPhases: 52   usedPhases: 28
minDist: 4.6°   maxDist: 160.3°   AzGap: 55°   2ndAzGap: 80°   atten: -1.45 [+/-0.54]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 5km   maxHorUnc: 7km   azMaxHorUnc: 79°
68%ConfEllipsoid:   semiMajorAxisLength: 10km   majorAxisAzimuth: 258°   majorAxisPlunge: 35°   semiIntermediateAxisLength: 7km   intermediateAxisAzimuth: 121°   intermediateAxisPlunge: 46°   semiMinorAxisLength: 6km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.1 [14]    Td: 0.5Xs [3]    Td*T50Ex: - [0]    To: 0.8Xs [2]
Closest plate boundaries:
Subduction geometry:    Zone: South America    Slab depth at epicenter: 527km
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       585km
       585km
       585km
Slab depth at epicenter:
       527km
       -
       -
./hypo.1762873204236.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 70°   dip: 60°   rake: -16°
Nodal Plane 2: strike: 168°   dip: 76°   rake: -149°
Quality: azimuthalGap: -1°   stationPolarityCount: 29   misfitWeightCount: 11.4   misfit: 0.06   stationDistributionRatio: 0.50   meanDistP: 20.5   meanDistT: 25.1   qualityCode: B
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1762873204236.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 162°   dip: 68°   rake: -149°
Nodal Plane 2: strike: 59°   dip: 61°   rake: -26°
Quality: azimuthalGap: 70°   stationPolarityCount: 29   misfit: 0.15   stationDistributionRatio: 0.54   rmsAngDiffAccPref: 22.69   fracAcc30degPref: 0.90   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1762873204236.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.1762873204236.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.1762873204236.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1762873204236
Event info last updated: 2025.11.11-16:01:09 UTC
Event first association/location: 2025.11.11-15:03:53 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI