Early-est:     Jujuy Province, Argentina    2026.03.30-14:26:29.85    q:A      mb:4.4*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1774880790823.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1774880790823.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1774880790823.mech.hash.thumb.jpg

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

Earthquake Details:
Magnitude: mb: 4.4* [18]    Mwp: - [0]    Mwpd: - [0]
Region: Jujuy Province, Argentina
Origin Time: 2026.03.30-14:26:29.85 UTC
Hypocenter: lat: -23.28°  lon: -66.80°  [+/-8km]    depth: 193km  [+/-9km]
Location Quality: qualityCode:  A     stdErr: 0.8s   assocPhases: 64   usedPhases: 28
minDist: 3.2°   maxDist: 153.3°   AzGap: 80°   2ndAzGap: 93°   atten: -1.12 [+/-0.27]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 6km   maxHorUnc: 8km   azMaxHorUnc: 150°
68%ConfEllipsoid:   semiMajorAxisLength: 9km   majorAxisAzimuth: 152°   majorAxisPlunge: 7°   semiIntermediateAxisLength: 9km   intermediateAxisAzimuth: 265°   intermediateAxisPlunge: 73°   semiMinorAxisLength: 8km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.3 [11]    Td: 0.2Xs [2]    Td*T50Ex: - [0]    To: 1.9s [11]
Closest plate boundaries:
   Altiplano - South America [continental rift boundary]: distance: ~200km
   Nazca \ South America [subduction zone]: distance: ~470km
   Nazca \ Altiplano [subduction zone]: distance: ~480km
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 (470km)
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       193km
       193km
       193km
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)
./hypo.1774880790823.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 264°   dip: 66°   rake: -177°
Nodal Plane 2: strike: 173°   dip: 88°   rake: -24°
Quality: azimuthalGap: -1°   stationPolarityCount: 21   misfitWeightCount: 6.7   misfit: 0.05   stationDistributionRatio: 0.51   meanDistP: 50.1   meanDistT: 48.1   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1774880790823.mech.fmamp_polarity.mechanism.jpg
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
./hypo.1774880790823.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 262°   dip: 60°   rake: 169°
Nodal Plane 2: strike: 358°   dip: 80°   rake: 30°
Quality: azimuthalGap: 101°   stationPolarityCount: 21   misfit: 0.20   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 29.82   fracAcc30degPref: 0.73   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1774880790823.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1774880790823
Event info last updated: 2026.03.30-15:25:02 UTC
Event first association/location: 2026.03.30-14:31:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA