Early-est:     Oaxaca, Mexico    2026.02.08-21:42:11.72    q:A      mb:5.2    Mwp:5.9*    Mwpd:-    Td*T50Ex:2.4     fmamp_polarity:./hypo.1770586932898.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1770586932898.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1770586932898.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 [53]    Mwp: 5.9* [24]    Mwpd: 6.2Xinv [22]
Region: Oaxaca, Mexico
Origin Time: 2026.02.08-21:42:11.72 UTC
Hypocenter: lat: 16.30°  lon: -96.63°  [+/-15km]    depth: 5km  [+/-15km]
Location Quality: qualityCode:  A     stdErr: 1.1s   assocPhases: 110   usedPhases: 59
minDist: 8.9°   maxDist: 150.5°   AzGap: 98°   2ndAzGap: 106°   atten: -1.51 [+/-0.26]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 34°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 33°   majorAxisPlunge: 13°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 302°   intermediateAxisPlunge: 5°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.7 [39]    Td: 3.4s [22]    Td*T50Ex: 2.4 [22]    To: 38.8s [37]
Closest plate boundaries:
   Cocos \ North America [subduction zone]: distance: ~100km
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 (100km)
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   2.4
   2.4
   2.4
Td*To:
     131.9
     131.9
     131.9
Mwp magnitude:
       5.9*
       5.9*
       5.9*
Hypocenter depth:
       5km
       5km
       5km
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.1770586932898.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 148°   dip: 12°   rake: -13°
Nodal Plane 2: strike: 251°   dip: 87°   rake: -102°
Quality: azimuthalGap: -1°   stationPolarityCount: 44   misfitWeightCount: 6.9   misfit: 0.10   stationDistributionRatio: 0.35   meanDistP: 45.1   meanDistT: 35.6   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1770586932898.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 141°   dip: 36°   rake: 36°
Nodal Plane 2: strike: 21°   dip: 70°   rake: 120°
Quality: azimuthalGap: -1°   stationPolarityCount: 14   misfitWeightCount: 4.2   misfit: 0.00   stationDistributionRatio: 0.40   meanDistP: 48.5   meanDistT: 41.7   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1770586932898.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: 160°   stationPolarityCount: 44   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1770586932898.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1770586932898
Event info last updated: 2026.02.08-22:41:00 UTC
Event first association/location: 2026.02.08-21:48:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA