Early-est:     Flores Sea    2026.08.17-10:42:42.41    q:C      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786963366199.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786963366199.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786963366199.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* [12]    Mwp: 5.2X [1]    Mwpd: 5.6Xinv [1]
Region: Flores Sea
Origin Time: 2026.08.17-10:42:42.41 UTC
Hypocenter: lat: -7.71°  lon: 120.56°  [+/-36km]    depth: 9km  [+/-25km]
Location Quality: qualityCode:  C     stdErr: 2.3s   assocPhases: 36   usedPhases: 18
minDist: 1.9°   maxDist: 146.9°   AzGap: 124°   2ndAzGap: 135°   atten: -0.70 [+/-0.42]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 36km   azMaxHorUnc: 8°
68%ConfEllipsoid:   semiMajorAxisLength: 48km   majorAxisAzimuth: 188°   majorAxisPlunge: 23°   semiIntermediateAxisLength: 20km   intermediateAxisAzimuth: 282°   intermediateAxisPlunge: 9°   semiMinorAxisLength: 18km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.8 [11]    Td: 1.5Xs [1]    Td*T50Ex: - [0]    To: 46.7s [10]
Closest plate boundaries:
   Banda Sea - Sunda [continental transform fault]: distance: ~10km
   Sunda - Timor [continental transform fault]: distance: ~10km
   Banda Sea - Timor [oceanic convergent boundary]: distance: ~10km
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 (10km)
 YES (10km)
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
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.1786963366199.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 114°   dip: 77°   rake: -174°
Nodal Plane 2: strike: 23°   dip: 84°   rake: -13°
Quality: azimuthalGap: -1°   stationPolarityCount: 15   misfitWeightCount: 5.0   misfit: 0.04   stationDistributionRatio: 0.36   meanDistP: 52.1   meanDistT: 52.1   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786963366199.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.1786963366199.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (No solution available)
Nodal Plane 1: strike: 999°   dip: 99°   rake: 999°
Nodal Plane 2: strike: 324°   dip: 13°   rake: 135°
Quality: azimuthalGap: 167°   stationPolarityCount: 11   misfit: 0.99   stationDistributionRatio: 0.56   rmsAngDiffAccPref: 38.82   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786963366199.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786963366199
Event info last updated: 2026.08.17-11:41:00 UTC
Event first association/location: 2026.08.17-10:53:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA