Early-est:     Southern Bolivia    2026.04.01-21:09:43.94    q:C      mb:4.2*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     fmamp_polarity_waveform:     hash:

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

Earthquake Details: Magnitude: mb: 4.2* [5]    Mwp: - [0]    Mwpd: - [0] Region: Southern Bolivia Origin Time: 2026.04.01-21:09:43.94 UTC Hypocenter: lat: -21.86°  lon: -66.84°  [+/-19km]    depth: 293km  [+/-18km] Location Quality: qualityCode:  C     stdErr: 1.5s   assocPhases: 11   usedPhases: 8 minDist: 4.2°   maxDist: 144.6°   AzGap: 131°   2ndAzGap: 181°   atten: -1.50 [+/-0.84] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 19km   azMaxHorUnc: 108° 68%ConfEllipsoid:   semiMajorAxisLength: 25km   majorAxisAzimuth: 286°   majorAxisPlunge: 27°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 180°   intermediateAxisPlunge: 28°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.6 [5]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.9s [5] Closest plate boundaries:    Altiplano - South America [continental rift boundary]: distance: ~50km    Nazca \ Altiplano [subduction zone]: distance: ~460km    Nazca \ South America [subduction zone]: distance: ~460km Subduction geometry:    Zone: South America: DEBUG: error: [Errno 2] No such file or directory: 'gmt'    Slab depth at epicenter: error: evaluating slab depth: -999.9 Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (460km)  no  no Prob underwater:  <1%  <1%  <1% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        293km        293km        293km Slab depth at epicenter:        n/a        -        - Tsunami and Rupture predictions (TEST!): No prediction: Event too small (Mwp<7.0) or too few Mwp readings (N<20)

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 (FMAMP_POLARITY_WAVEFORM):    (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_waveform
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: 5   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: F Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775077783936
Event info last updated: 2026.04.01-22:08:00 UTC
Event first association/location: 2026.04.01-21:16:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA