Early-est:     Near Coast of Central Chile    2026.09.25-15:29:08.83    q:A      mb:5.2*    Mwp:-    Mwpd:-    Td*T50Ex:0.4     fmamp_polarity:./hypo.1790350139330.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1790350139330.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1790350139330.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: 5.2* [41]    Mwp: 5.4X [2]    Mwpd: 5.5Xinv [2]
Region: Near Coast of Central Chile
Origin Time: 2026.09.25-15:29:08.83 UTC
Hypocenter: lat: -34.03°  lon: -72.22°  [+/-3km]    depth: 31km  [+/-4km]
Location Quality: qualityCode:  A     stdErr: 1.0s   assocPhases: 90   usedPhases: 65
minDist: 1.0°   maxDist: 166.2°   AzGap: 71°   2ndAzGap: 108°   atten: -1.25 [+/-0.19]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 3km   maxHorUnc: 3km   azMaxHorUnc: 106°
68%ConfEllipsoid:   semiMajorAxisLength: 4km   majorAxisAzimuth: 186°   majorAxisPlunge: 84°   semiIntermediateAxisLength: 4km   intermediateAxisAzimuth: 285°   intermediateAxisPlunge: 1°   semiMinorAxisLength: 3km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [41]    Td: 1.1s [4]    Td*T50Ex: 0.4 [4]    To: 2.0s [39]
Closest plate boundaries:
   Nazca \ South America [subduction zone]: distance: ~70km
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 (70km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.4
   0.4
   0.4
Td*To:
     2.2
     2.2
     2.2
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       31km
       31km
       31km
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.1790350139330.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 159°   dip: 9°   rake: 14°
Nodal Plane 2: strike: 55°   dip: 88°   rake: 99°
Quality: azimuthalGap: -1°   stationPolarityCount: 46   misfitWeightCount: 11.4   misfit: 0.17   stationDistributionRatio: 0.48   meanDistP: 44.4   meanDistT: 35.8   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1790350139330.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.1790350139330.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 54°   dip: 64°   rake: -173°
Nodal Plane 2: strike: 321°   dip: 84°   rake: -26°
Quality: azimuthalGap: 80°   stationPolarityCount: 46   misfit: 0.41   stationDistributionRatio: 0.73   rmsAngDiffAccPref: 45.35   fracAcc30degPref: 0.55   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1790350139330.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1790350139330
Event info last updated: 2026.09.25-16:28:01 UTC
Event first association/location: 2026.09.25-15:31:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA