Early-est:     Banda Sea    2026.08.15-13:56:25.59    q:B      mb:4.5*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786802185551.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786802185551.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786802185551.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: 4.5* [12]    Mwp: - [0]    Mwpd: - [0]
Region: Banda Sea
Origin Time: 2026.08.15-13:56:25.59 UTC
Hypocenter: lat: -6.59°  lon: 129.87°  [+/-11km]    depth: 146km  [+/-18km]
Location Quality: qualityCode:  B     stdErr: 0.7s   assocPhases: 22   usedPhases: 13
minDist: 4.4°   maxDist: 150.2°   AzGap: 88°   2ndAzGap: 132°   atten: -1.44 [+/-0.37]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 10km   maxHorUnc: 11km   azMaxHorUnc: 44°
68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 235°   majorAxisPlunge: 84°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 43°   intermediateAxisPlunge: 6°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [8]    Td: 0.2Xs [3]    Td*T50Ex: - [0]    To: 29.2s [8]
Closest plate boundaries:
   Banda Sea - Timor [continental convergent boundary]: distance: ~10km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (10km)
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       146km
       146km
       146km
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.1786802185551.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 117°   dip: 17°   rake: -158°
Nodal Plane 2: strike: 6°   dip: 84°   rake: -75°
Quality: azimuthalGap: -1°   stationPolarityCount: 10   misfitWeightCount: 4.9   misfit: 0.05   stationDistributionRatio: 0.55   meanDistP: 46.3   meanDistT: 40.3   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786802185551.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.1786802185551.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 129°   dip: 87°   rake: 137°
Nodal Plane 2: strike: 221°   dip: 47°   rake: 4°
Quality: azimuthalGap: 131°   stationPolarityCount: 10   misfit: 0.34   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 48.13   fracAcc30degPref: 0.28   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786802185551.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786802185551
Event info last updated: 2026.08.15-14:55:01 UTC
Event first association/location: 2026.08.15-14:02:03 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA