Early-est:     Northern Molucca Sea    2026.04.02-10:10:31.97    q:C      mb:4.7*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     fmamp_polarity_waveform:     hash:

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

Earthquake Details: Magnitude: mb: 4.7* [14]    Mwp: - [0]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.04.02-10:10:31.97 UTC Hypocenter: lat: 0.72°  lon: 126.61°  [+/-19km]    depth: 55km  [+/-27km] Location Quality: qualityCode:  C     stdErr: 1.9s   assocPhases: 25   usedPhases: 19 minDist: 0.8°   maxDist: 147.2°   AzGap: 78°   2ndAzGap: 129°   atten: -0.66 [+/-0.58] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 19km   azMaxHorUnc: 7° 68%ConfEllipsoid:   semiMajorAxisLength: 29km   majorAxisAzimuth: 188°   majorAxisPlunge: 55°   semiIntermediateAxisLength: 19km   intermediateAxisAzimuth: 3°   intermediateAxisPlunge: 35°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [9]    Td: 2.1Xs [1]    Td*T50Ex: - [0]    To: 10.5s [7] Closest plate boundaries:    Molucca Sea \ Sunda [subduction zone]: distance: ~60km    Molucca Sea \ Birds Head [subduction zone]: distance: ~60km    Molucca Sea / Sunda [subduction zone]: distance: ~90km    Birds Head / Sunda [subduction zone]: distance: ~110km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (60km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        55km        55km        55km 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)

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 55°   dip: 21°   rake: 84° Nodal Plane 2: strike: 241°   dip: 69°   rake: 92° Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 7.1   misfit: 0.01   stationDistributionRatio: 0.63   meanDistP: 32.2   meanDistT: 40.9   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
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
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 263°   dip: 79°   rake: 129° Nodal Plane 2: strike: 7°   dip: 40°   rake: 18° Quality: azimuthalGap: 108°   stationPolarityCount: 13   misfit: 0.07   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 36.30   fracAcc30degPref: 0.56   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775124630901
Event info last updated: 2026.04.02-11:09:03 UTC
Event first association/location: 2026.04.02-10:17:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA