Early-est:     Flores Sea    2026.08.16-10:14:36.45    q:B      mb:5.1    Mwp:5.6*    Mwpd:-    Td*T50Ex:2.0     fmamp_polarity:./hypo.1786875277788.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786875277788.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786875277788.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: 5.1 [26]    Mwp: 5.6* [8]    Mwpd: 5.9Xinv [6]
Region: Flores Sea
Origin Time: 2026.08.16-10:14:36.45 UTC
Hypocenter: lat: -7.80°  lon: 120.70°  [+/-18km]    depth: 9km  [+/-22km]
Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 70   usedPhases: 31
minDist: 1.7°   maxDist: 154.5°   AzGap: 48°   2ndAzGap: 79°   atten: -1.47 [+/-0.24]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 18km   azMaxHorUnc: 21°
68%ConfEllipsoid:   semiMajorAxisLength: 23km   majorAxisAzimuth: 24°   majorAxisPlunge: 40°   semiIntermediateAxisLength: 21km   intermediateAxisAzimuth: 193°   intermediateAxisPlunge: 49°   semiMinorAxisLength: 17km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6 [20]    Td: 3.4s [12]    Td*T50Ex: 2.0 [12]    To: 20.0s [17]
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:
   2.0
   2.0
   2.0
Td*To:
     68.0
     68.0
     68.0
Mwp magnitude:
       5.6*
       5.6*
       5.6*
Hypocenter depth:
       9km
       9km
       9km
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.1786875277788.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 339°   dip: 35°   rake: -70°
Nodal Plane 2: strike: 135°   dip: 57°   rake: -104°
Quality: azimuthalGap: -1°   stationPolarityCount: 27   misfitWeightCount: 10.3   misfit: 0.11   stationDistributionRatio: 0.51   meanDistP: 41.6   meanDistT: 43.0   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786875277788.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.1786875277788.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 124°   dip: 73°   rake: -163°
Nodal Plane 2: strike: 29°   dip: 73°   rake: -17°
Quality: azimuthalGap: 50°   stationPolarityCount: 25   misfit: 0.19   stationDistributionRatio: 0.70   rmsAngDiffAccPref: 32.14   fracAcc30degPref: 0.74   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786875277788.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786875277788
Event info last updated: 2026.08.16-11:13:00 UTC
Event first association/location: 2026.08.16-10:18:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA