Early-est:     Northern Molucca Sea    2026.04.03-21:19:11.10    q:B      mb:5.0*    Mwp:4.7    Mwpd:-    Td*T50Ex:0.9     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: 5.0* [36]    Mwp: 4.7 [4]    Mwpd: 5.0Xinv [3] Region: Northern Molucca Sea Origin Time: 2026.04.03-21:19:11.10 UTC Hypocenter: lat: 1.37°  lon: 126.53°  [+/-20km]    depth: 74km  [+/-46km] Location Quality: qualityCode:  B     stdErr: 2.1s   assocPhases: 72   usedPhases: 48 minDist: 1.0°   maxDist: 159.2°   AzGap: 47°   2ndAzGap: 61°   atten: -1.11 [+/-0.21] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 18km   maxHorUnc: 20km   azMaxHorUnc: 175° 68%ConfEllipsoid:   semiMajorAxisLength: 49km   majorAxisAzimuth: 163°   majorAxisPlunge: 66°   semiIntermediateAxisLength: 23km   intermediateAxisAzimuth: 66°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 17km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [29]    Td: 1.6s [5]    Td*T50Ex: 0.9 [5]    To: 13.9s [27] Closest plate boundaries:    Birds Head / Sunda [subduction zone]: distance: ~40km    Molucca Sea \ Sunda [subduction zone]: distance: ~40km    Molucca Sea \ Birds Head [subduction zone]: distance: ~40km    Sunda - Birds Head [oceanic convergent boundary]: distance: ~110km    Molucca Sea / Sunda [subduction zone]: distance: ~150km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (40km)  YES (110km)  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    0.9    0.9    0.9 Td*To:      22.2      22.2      22.2 Mwp magnitude:        4.7        4.7        4.7 Hypocenter depth:        74km        74km        74km 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: 63°   dip: 30°   rake: -174° Nodal Plane 2: strike: 328°   dip: 87°   rake: -60° Quality: azimuthalGap: -1°   stationPolarityCount: 39   misfitWeightCount: 17.0   misfit: 0.23   stationDistributionRatio: 0.53   meanDistP: 45.2   meanDistT: 42.6   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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 31°   dip: 36°   rake: 153° Nodal Plane 2: strike: 143°   dip: 75°   rake: 57° Quality: azimuthalGap: 55°   stationPolarityCount: 39   misfit: 0.41   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 62.57   fracAcc30degPref: 0.18   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775251150655
Event info last updated: 2026.04.03-22:18:00 UTC
Event first association/location: 2026.04.03-21:25:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA