Early-est:     Banda Sea    2026.09.25-04:27:49.10    q:C      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1790310471279.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1790310471279.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1790310471279.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: 4.9* [25]    Mwp: - [0]    Mwpd: - [0]
Region: Banda Sea
Origin Time: 2026.09.25-04:27:49.10 UTC
Hypocenter: lat: -7.35°  lon: 125.88°  [+/-36km]    depth: 71km  [+/-51km]
Location Quality: qualityCode:  C     stdErr: 1.7s   assocPhases: 48   usedPhases: 28
minDist: 6.5°   maxDist: 150.3°   AzGap: 48°   2ndAzGap: 88°   atten: -1.09 [+/-0.23]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 27km   maxHorUnc: 36km   azMaxHorUnc: 72°
68%ConfEllipsoid:   semiMajorAxisLength: 56km   majorAxisAzimuth: 53°   majorAxisPlunge: 56°   semiIntermediateAxisLength: 40km   intermediateAxisAzimuth: 276°   intermediateAxisPlunge: 26°   semiMinorAxisLength: 30km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [16]    Td: 0.7Xs [3]    Td*T50Ex: - [0]    To: 28.9s [16]
Closest plate boundaries:
   Banda Sea - Timor [oceanic convergent boundary]: distance: ~20km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (20km)
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       71km
       71km
       71km
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.1790310471279.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 1°   dip: 52°   rake: -152°
Nodal Plane 2: strike: 253°   dip: 68°   rake: -42°
Quality: azimuthalGap: -1°   stationPolarityCount: 21   misfitWeightCount: 8.1   misfit: 0.11   stationDistributionRatio: 0.60   meanDistP: 52.0   meanDistT: 50.1   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1790310471279.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.1790310471279.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 309°   dip: 70°   rake: -139°
Nodal Plane 2: strike: 202°   dip: 52°   rake: -26°
Quality: azimuthalGap: 112°   stationPolarityCount: 21   misfit: 0.22   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 33.14   fracAcc30degPref: 0.68   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1790310471279.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1790310471279
Event info last updated: 2026.09.25-05:26:01 UTC
Event first association/location: 2026.09.25-04:35:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA