Early-est:     Banda Sea    2026.06.27-10:37:02.24    q:A      mb:5.0    Mwp:5.8*    Mwpd:-    Td*T50Ex:0.4     fmamp_polarity:./hypo.1782556625131.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1782556625131.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1782556625131.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: 5.0 [54]    Mwp: 5.8* [16]    Mwpd: 6.0Xinv [14]
Region: Banda Sea
Origin Time: 2026.06.27-10:37:02.24 UTC
Hypocenter: lat: -6.79°  lon: 125.71°  [+/-14km]    depth: 512km  [+/-17km]
Location Quality: qualityCode:  A     stdErr: 1.2s   assocPhases: 183   usedPhases: 90
minDist: 3.3°   maxDist: 153.2°   AzGap: 28°   2ndAzGap: 44°   atten: -1.70 [+/-0.19]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 27°
68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 34°   majorAxisPlunge: 27°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 162°   intermediateAxisPlunge: 51°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.3 [43]    Td: 1.2s [10]    Td*T50Ex: 0.4 [10]    To: 2.7s [41]
Closest plate boundaries:
   Banda Sea - Timor [oceanic convergent boundary]: distance: ~70km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (70km)
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.4
   0.4
   0.4
Td*To:
     3.2
     3.2
     3.2
Mwp magnitude:
       5.8*
       5.8*
       5.8*
Hypocenter depth:
       512km
       512km
       512km
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.1782556625131.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 335°   dip: 45°   rake: -62°
Nodal Plane 2: strike: 118°   dip: 51°   rake: -115°
Quality: azimuthalGap: -1°   stationPolarityCount: 55   misfitWeightCount: 26.0   misfit: 0.11   stationDistributionRatio: 0.58   meanDistP: 13.1   meanDistT: 20.1   qualityCode: A
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1782556625131.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.1782556625131.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 331°   dip: 40°   rake: -63°
Nodal Plane 2: strike: 117°   dip: 55°   rake: -111°
Quality: azimuthalGap: 28°   stationPolarityCount: 55   misfit: 0.19   stationDistributionRatio: 0.74   rmsAngDiffAccPref: 19.11   fracAcc30degPref: 0.93   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1782556625131.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1782556625131
Event info last updated: 2026.06.27-11:36:00 UTC
Event first association/location: 2026.06.27-10:40:04 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA