Early-est:     Mona Passage    2025.05.17-03:24:19.79    q:C      mb:4.6*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1747452258486.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1747452258486.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1747452258486.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: Mona Passage
Origin Time: 2025.05.17-03:24:19.79 UTC
Hypocenter: lat: 19.31°  lon: -67.02°  [+/-33km]    depth: 30km  [+/-33km]
Location Quality: qualityCode:  C     stdErr: 1.8s   assocPhases: 31   usedPhases: 14
minDist: 1.5°   maxDist: 133.0°   AzGap: 137°   2ndAzGap: 145°   atten: -1.72 [+/-0.22]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 27km   maxHorUnc: 33km   azMaxHorUnc: 30°
68%ConfEllipsoid:   semiMajorAxisLength: 41km   majorAxisAzimuth: 216°   majorAxisPlunge: 16°   semiIntermediateAxisLength: 36km   intermediateAxisAzimuth: 318°   intermediateAxisPlunge: 35°   semiMinorAxisLength: 30km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4X [3]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.8Xs [3]
Closest plate boundaries:
   Caribbean - North America [oceanic transform fault]: distance: ~50km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 YES (50km)
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       30km
       30km
       30km
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.1747452258486.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 112°   dip: 31°   rake: -108°
Nodal Plane 2: strike: 313°   dip: 61°   rake: -80°
Quality: azimuthalGap: -1°   stationPolarityCount: 11   misfitWeightCount: 3.5   misfit: 0.05   stationDistributionRatio: 0.51   meanDistP: 47.8   meanDistT: 51.3   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1747452258486.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.1747452258486.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 116°   dip: 17°   rake: -90°
Nodal Plane 2: strike: 296°   dip: 73°   rake: -90°
Quality: azimuthalGap: 144°   stationPolarityCount: 11   misfit: 0.49   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 38.89   fracAcc30degPref: 0.56   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1747452258486.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1747452258486
Event info last updated: 2025.05.17-04:23:01 UTC
Event first association/location: 2025.05.17-03:30:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA