Early-est:     Banda Sea    2026.08.11-10:49:52.32    q:B      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786445391426.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786445391426.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786445391426.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: - [0]    Mwpd: - [0]
Region: Banda Sea
Origin Time: 2026.08.11-10:49:52.32 UTC
Hypocenter: lat: -6.81°  lon: 129.82°  [+/-17km]    depth: 140km  [+/-18km]
Location Quality: qualityCode:  B     stdErr: 0.9s   assocPhases: 45   usedPhases: 12
minDist: 4.6°   maxDist: 150.9°   AzGap: 85°   2ndAzGap: 109°   atten: -1.91 [+/-0.48]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 17km   azMaxHorUnc: 112°
68%ConfEllipsoid:   semiMajorAxisLength: 22km   majorAxisAzimuth: 287°   majorAxisPlunge: 27°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 156°   intermediateAxisPlunge: 53°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [11]    Td: 0.2Xs [2]    Td*T50Ex: - [0]    To: 6.3s [11]
Closest plate boundaries:
   Banda Sea - Timor [continental convergent boundary]: distance: ~30km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (30km)
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       140km
       140km
       140km
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.1786445391426.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 118°   dip: 10°   rake: -164°
Nodal Plane 2: strike: 12°   dip: 87°   rake: -80°
Quality: azimuthalGap: -1°   stationPolarityCount: 16   misfitWeightCount: 9.6   misfit: 0.13   stationDistributionRatio: 0.41   meanDistP: 32.5   meanDistT: 37.5   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786445391426.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.1786445391426.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 55°   dip: 24°   rake: 130°
Nodal Plane 2: strike: 192°   dip: 72°   rake: 74°
Quality: azimuthalGap: 109°   stationPolarityCount: 16   misfit: 0.30   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 32.25   fracAcc30degPref: 0.67   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786445391426.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786445391426
Event info last updated: 2026.08.11-11:48:00 UTC
Event first association/location: 2026.08.11-10:54:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA