Early-est:     Bali Sea    2026.08.17-18:10:05.69    q:A      mb:4.7*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786990204783.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786990204783.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786990204783.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: 4.7* [30]    Mwp: 5.0X [1]    Mwpd: - [0]
Region: Bali Sea
Origin Time: 2026.08.17-18:10:05.69 UTC
Hypocenter: lat: -7.01°  lon: 117.19°  [+/-10km]    depth: 495km  [+/-12km]
Location Quality: qualityCode:  A     stdErr: 1.0s   assocPhases: 61   usedPhases: 39
minDist: 3.2°   maxDist: 156.1°   AzGap: 42°   2ndAzGap: 56°   atten: -1.96 [+/-0.13]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 8km   maxHorUnc: 10km   azMaxHorUnc: 13°
68%ConfEllipsoid:   semiMajorAxisLength: 13km   majorAxisAzimuth: 334°   majorAxisPlunge: 60°   semiIntermediateAxisLength: 12km   intermediateAxisAzimuth: 204°   intermediateAxisPlunge: 20°   semiMinorAxisLength: 9km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.0 [21]    Td: 0.6Xs [3]    Td*T50Ex: - [0]    To: 1.3s [20]
Closest plate boundaries:
Subduction geometry:    Zone: Sumatra-Java: 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?:
 no
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       495km
       495km
       495km
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.1786990204783.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 260°   dip: 54°   rake: -41°
Nodal Plane 2: strike: 17°   dip: 58°   rake: -136°
Quality: azimuthalGap: -1°   stationPolarityCount: 29   misfitWeightCount: 15.2   misfit: 0.09   stationDistributionRatio: 0.45   meanDistP: 45.7   meanDistT: 31.0   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786990204783.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.1786990204783.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 59°   dip: 38°   rake: -49°
Nodal Plane 2: strike: 191°   dip: 62°   rake: -118°
Quality: azimuthalGap: 101°   stationPolarityCount: 29   misfit: 0.18   stationDistributionRatio: 0.66   rmsAngDiffAccPref: 16.10   fracAcc30degPref: 0.87   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786990204783.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786990204783
Event info last updated: 2026.08.17-19:09:00 UTC
Event first association/location: 2026.08.17-18:14:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA