Early-est:     Northern Chile    2025.08.05-04:58:56.17    q:C      mb:4.6*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754369945029.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754369945029.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754369945029.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: 4.6* [10]    Mwp: - [0]    Mwpd: - [0]
Region: Northern Chile
Origin Time: 2025.08.05-04:58:56.17 UTC
Hypocenter: lat: -21.27°  lon: -69.22°  [+/-65km]    depth: 15km  [+/-45km]
Location Quality: qualityCode:  C     stdErr: 2.5s   assocPhases: 41   usedPhases: 15
minDist: 3.9°   maxDist: 84.4°   AzGap: 175°   2ndAzGap: 197°   atten: -1.12 [+/-0.67]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 24km   maxHorUnc: 65km   azMaxHorUnc: 142°
68%ConfEllipsoid:   semiMajorAxisLength: 85km   majorAxisAzimuth: 143°   majorAxisPlunge: 21°   semiIntermediateAxisLength: 36km   intermediateAxisAzimuth: 274°   intermediateAxisPlunge: 59°   semiMinorAxisLength: 29km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.8 [9]    Td: -s [0]    Td*T50Ex: - [0]    To: 44.6s [9]
Closest plate boundaries:
   Altiplano - South America [continental rift boundary]: distance: ~30km
   Nazca \ Altiplano [subduction zone]: distance: ~210km
   Nazca \ South America [subduction zone]: distance: ~230km
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 (210km)
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       15km
       15km
       15km
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.1754369945029.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 150°   dip: 65°   rake: -163°
Nodal Plane 2: strike: 53°   dip: 75°   rake: -26°
Quality: azimuthalGap: -1°   stationPolarityCount: 10   misfitWeightCount: 3.9   misfit: 0.09   stationDistributionRatio: 0.41   meanDistP: 45.4   meanDistT: 52.2   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754369945029.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.1754369945029.mech.fmamp_polarity_waveform.mechanism.jpg
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: 175°   stationPolarityCount: 10   misfit: 0.99   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 30.21   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754369945029.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754369945029
Event info last updated: 2025.08.05-05:57:04 UTC
Event first association/location: 2025.08.05-05:05:05 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA