Early-est:     Oaxaca, Mexico    2025.08.02-17:58:47.27    q:A      mb:5.3    Mwp:5.8*    Mwpd:-    Td*T50Ex:2.6     fmamp_polarity:./hypo.1754157521883.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754157521883.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754157521883.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: 5.3 [83]    Mwp: 5.8* [20]    Mwpd: 6.1Xinv [20]
Region: Oaxaca, Mexico
Origin Time: 2025.08.02-17:58:47.27 UTC
Hypocenter: lat: 17.32°  lon: -96.02°  [+/-8km]    depth: 62km  [+/-19km]
Location Quality: qualityCode:  A     stdErr: 1.2s   assocPhases: 223   usedPhases: 104
minDist: 3.6°   maxDist: 149.3°   AzGap: 43°   2ndAzGap: 66°   atten: -1.38 [+/-0.18]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 6km   maxHorUnc: 8km   azMaxHorUnc: 25°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 33°   majorAxisPlunge: 75°   semiIntermediateAxisLength: 8km   intermediateAxisAzimuth: 191°   intermediateAxisPlunge: 14°   semiMinorAxisLength: 8km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.9 [70]    Td: 3.0s [30]    Td*T50Ex: 2.6 [30]    To: 51.4s [68]
Closest plate boundaries:
   Cocos \ North America [subduction zone]: distance: ~220km
Subduction geometry:    Zone: Central 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 (220km)
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   2.6
   2.6
   2.6
Td*To:
     154.2
     154.2
     154.2
Mwp magnitude:
       5.8*
       5.8*
       5.8*
Hypocenter depth:
       62km
       62km
       62km
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.1754157521883.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 152°   dip: 30°   rake: -74°
Nodal Plane 2: strike: 313°   dip: 61°   rake: -99°
Quality: azimuthalGap: -1°   stationPolarityCount: 84   misfitWeightCount: 25.4   misfit: 0.10   stationDistributionRatio: 0.59   meanDistP: 14.8   meanDistT: 15.9   qualityCode: A
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754157521883.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.1754157521883.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 179°   dip: 17°   rake: -60°
Nodal Plane 2: strike: 327°   dip: 75°   rake: -99°
Quality: azimuthalGap: 88°   stationPolarityCount: 84   misfit: 0.23   stationDistributionRatio: 0.76   rmsAngDiffAccPref: 28.59   fracAcc30degPref: 0.81   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754157521883.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754157521883
Event info last updated: 2025.08.02-18:57:01 UTC
Event first association/location: 2025.08.02-18:04:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA