Early-est:     El Salvador    2026.10.04-23:36:37.13    q:C      mb:4.6    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: 4.6 [5]    Mwp: - [0]    Mwpd: 7.6Xinv [1] Region: El Salvador Origin Time: 2026.10.04-23:36:37.13 UTC Hypocenter: lat: 13.06°  lon: -89.41°  [+/-14km]    depth: 77km  [+/-21km] Location Quality: qualityCode:  C     stdErr: 0.5s   assocPhases: 9   usedPhases: 7 minDist: 2.3°   maxDist: 42.8°   AzGap: 198°   2ndAzGap: 221°   atten: -1.46 [+/-0.29] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 2° 68%ConfEllipsoid:   semiMajorAxisLength: 21km   majorAxisAzimuth: 33°   majorAxisPlunge: 74°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 169°   intermediateAxisPlunge: 12°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [4]    Td: 219.4Xs [1]    Td*T50Ex: - [0]    To: 8.2Xs [2] Closest plate boundaries:    Caribbean / Cocos [subduction zone]: distance: ~90km    Caribbean - North America [continental rift boundary]: distance: ~150km    Cocos \ North America [subduction zone]: distance: ~170km Subduction geometry:    Zone: Central America    Slab depth at epicenter: 41km 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:        77km        77km        77km Slab depth at epicenter:        41km        -        -

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
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: 99°   stationPolarityCount: 7   misfit: 0.99   stationDistributionRatio: 0.72   rmsAngDiffAccPref: 42.18   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: 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/1791156997126
Event info last updated: 2026.10.05-00:36:47 UTC
Event first association/location: 2026.10.04-23:53:38 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI