Early-est:     Flores Sea    2026.08.16-06:51:49.40    q:A      mb:5.2    Mwp:5.9*    Mwpd:-    Td*T50Ex:1.9     fmamp_polarity:./hypo.1786863110965.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786863110965.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786863110965.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 [44]    Mwp: 5.9* [14]    Mwpd: 6.0Xinv [10]
Region: Flores Sea
Origin Time: 2026.08.16-06:51:49.40 UTC
Hypocenter: lat: -7.95°  lon: 120.67°  [+/-10km]    depth: 18km  [+/-15km]
Location Quality: qualityCode:  A     stdErr: 1.5s   assocPhases: 111   usedPhases: 56
minDist: 1.7°   maxDist: 154.2°   AzGap: 39°   2ndAzGap: 59°   atten: -1.25 [+/-0.17]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 7km   maxHorUnc: 10km   azMaxHorUnc: 18°
68%ConfEllipsoid:   semiMajorAxisLength: 15km   majorAxisAzimuth: 318°   majorAxisPlunge: 87°   semiIntermediateAxisLength: 12km   intermediateAxisAzimuth: 198°   intermediateAxisPlunge: 2°   semiMinorAxisLength: 9km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6 [36]    Td: 3.1s [9]    Td*T50Ex: 1.9 [9]    To: 28.3s [35]
Closest plate boundaries:
   Banda Sea - Sunda [continental transform fault]: distance: ~20km
   Sunda - Timor [continental transform fault]: distance: ~20km
   Banda Sea - Timor [oceanic convergent boundary]: distance: ~20km
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
 YES (20km)
 YES (20km)
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   1.9
   1.9
   1.9
Td*To:
     87.7
     87.7
     87.7
Mwp magnitude:
       5.9*
       5.9*
       5.9*
Hypocenter depth:
       18km
       18km
       18km
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.1786863110965.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 5°   dip: 4°   rake: -18°
Nodal Plane 2: strike: 113°   dip: 89°   rake: -94°
Quality: azimuthalGap: -1°   stationPolarityCount: 41   misfitWeightCount: 10.4   misfit: 0.09   stationDistributionRatio: 0.51   meanDistP: 27.2   meanDistT: 43.3   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786863110965.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.1786863110965.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 332°   dip: 1°   rake: -36°
Nodal Plane 2: strike: 97°   dip: 89°   rake: -91°
Quality: azimuthalGap: 39°   stationPolarityCount: 41   misfit: 0.16   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 25.36   fracAcc30degPref: 0.70   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786863110965.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786863110965
Event info last updated: 2026.08.16-07:50:00 UTC
Event first association/location: 2026.08.16-06:58:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA