Early-est:     Flores Sea    2026.08.16-13:38:40.21    q:C      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786887519467.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786887519467.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786887519467.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: 4.8* [11]    Mwp: 5.4X [1]    Mwpd: - [0]
Region: Flores Sea
Origin Time: 2026.08.16-13:38:40.21 UTC
Hypocenter: lat: -7.29°  lon: 120.87°  [+/-38km]    depth: 15km  [+/-24km]
Location Quality: qualityCode:  C     stdErr: 1.4s   assocPhases: 20   usedPhases: 17
minDist: 1.9°   maxDist: 85.9°   AzGap: 136°   2ndAzGap: 173°   atten: -1.30 [+/-0.32]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 38km   azMaxHorUnc: 13°
68%ConfEllipsoid:   semiMajorAxisLength: 47km   majorAxisAzimuth: 193°   majorAxisPlunge: 3°   semiIntermediateAxisLength: 24km   intermediateAxisAzimuth: 313°   intermediateAxisPlunge: 84°   semiMinorAxisLength: 20km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 97%
T50Ex: 0.4 [11]    Td: -s [0]    Td*T50Ex: - [0]    To: 30.4s [11]
Closest plate boundaries:
   Banda Sea - Sunda [continental transform fault]: distance: ~50km
   Sunda - Timor [continental transform fault]: distance: ~70km
   Banda Sea - Timor [oceanic convergent boundary]: distance: ~70km
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 (70km)
 YES (50km)
Prob underwater:
 97%
 97%
 97%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       15km
       15km
       15km
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.1786887519467.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 89°   dip: 5°   rake: 54°
Nodal Plane 2: strike: 305°   dip: 86°   rake: 93°
Quality: azimuthalGap: -1°   stationPolarityCount: 15   misfitWeightCount: 7.0   misfit: 0.11   stationDistributionRatio: 0.46   meanDistP: 47.4   meanDistT: 50.2   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786887519467.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.1786887519467.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 210°   dip: 32°   rake: 171°
Nodal Plane 2: strike: 307°   dip: 85°   rake: 58°
Quality: azimuthalGap: 136°   stationPolarityCount: 15   misfit: 0.15   stationDistributionRatio: 0.64   rmsAngDiffAccPref: 38.15   fracAcc30degPref: 0.51   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786887519467.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786887519467
Event info last updated: 2026.08.16-14:37:00 UTC
Event first association/location: 2026.08.16-13:45:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA