Early-est:     Near Coast of Chiapas, Mexico    2025.01.28-07:57:44.03    q:A      mb:4.6    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1738051064219.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1738051064219.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1738051064219.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1738051064219.mech.fmamp_amp_mwp.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 [29]    Mwp: 4.8X [1]    Mwpd: - [0]
Region: Near Coast of Chiapas, Mexico
Origin Time: 2025.01.28-07:57:44.03 UTC
Hypocenter: lat: 15.63°  lon: -93.13°  [+/-8km]    depth: 111km  [+/-9km]
Location Quality: qualityCode:  A     stdErr: 1.2s   assocPhases: 59   usedPhases: 35
minDist: 1.2°   maxDist: 148.5°   AzGap: 77°   2ndAzGap: 96°   atten: -1.95 [+/-0.22]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 7km   maxHorUnc: 8km   azMaxHorUnc: 4°
68%ConfEllipsoid:   semiMajorAxisLength: 11km   majorAxisAzimuth: 186°   majorAxisPlunge: 36°   semiIntermediateAxisLength: 8km   intermediateAxisAzimuth: 305°   intermediateAxisPlunge: 33°   semiMinorAxisLength: 8km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 1%
T50Ex: 0.9 [21]    Td: 0.3Xs [1]    Td*T50Ex: - [0]    To: 60.7s [9]
Closest plate boundaries:
   Cocos \ North America [subduction zone]: distance: ~180km
Subduction geometry:    Zone: Central America    Slab depth at epicenter: 79km
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (180km)
 no
 no
Prob underwater:
 1%
 1%
 1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       111km
       111km
       111km
Slab depth at epicenter:
       79km
       -
       -
./hypo.1738051064219.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 294°   dip: 44°   rake: 99°
Nodal Plane 2: strike: 102°   dip: 47°   rake: 82°
Quality: azimuthalGap: -1°   stationPolarityCount: 33   misfitWeightCount: 14.6   misfit: 0.12   stationDistributionRatio: 0.49   meanDistP: 33.5   meanDistT: 25.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1738051064219.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 126°   dip: 30°   rake: 84°
Nodal Plane 2: strike: 313°   dip: 60°   rake: 94°
Quality: azimuthalGap: 72°   stationPolarityCount: 33   misfit: 0.25   stationDistributionRatio: 0.73   rmsAngDiffAccPref: 30.40   fracAcc30degPref: 0.73   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1738051064219.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: nan°
Nodal Plane 2: strike: nan°   dip: nan°   rake: nan°
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/_amp_aref
./hypo.1738051064219.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: nan°
Nodal Plane 2: strike: nan°   dip: nan°   rake: nan°
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/_amp_mwp
./hypo.1738051064219.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1738051064219
Event info last updated: 2025.01.28-08:58:02 UTC
Event first association/location: 2025.01.28-08:01:50 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI