Early-est:     Northern Molucca Sea    2026.10.09-05:11:03.73    q:B      mb:4.9    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 4.9 [34]    Mwp: - [0]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.10.09-05:11:03.73 UTC Hypocenter: lat: 0.85°  lon: 126.27°  [+/-14km]    depth: 18km  [+/-12km] Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 73   usedPhases: 42 minDist: 8.8°   maxDist: 146.2°   AzGap: 78°   2ndAzGap: 92°   atten: -0.55 [+/-0.28] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 14km   azMaxHorUnc: 85° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 85°   majorAxisPlunge: 5°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 175°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 12km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [19]    Td: 1.9Xs [3]    Td*T50Ex: - [0]    To: 4.6s [15] Closest plate boundaries:    Molucca Sea \ Sunda [subduction zone]: distance: ~20km    Molucca Sea \ Birds Head [subduction zone]: distance: ~20km    Molucca Sea / Sunda [subduction zone]: distance: ~80km    Birds Head / Sunda [subduction zone]: distance: ~100km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (20km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        18km        18km        18km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 11°   dip: 32°   rake: -52° Nodal Plane 2: strike: 149°   dip: 65°   rake: -111° Quality: azimuthalGap: -1°   stationPolarityCount: 43   misfitWeightCount: 9.2   misfit: 0.21   stationDistributionRatio: 0.44   meanDistP: 34.5   meanDistT: 34.7   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 250°   dip: 36°   rake: 171° Nodal Plane 2: strike: 347°   dip: 85°   rake: 54° Quality: azimuthalGap: 78°   stationPolarityCount: 43   misfit: 0.42   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 38.12   fracAcc30degPref: 0.54   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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/_amp_aref
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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/_amp_mwp

Event ID: smi:KOERI/ee/event/1791522664299
Event info last updated: 2026.10.09-06:11:24 UTC
Event first association/location: 2026.10.09-05:18:30 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI