Early-est:     Northern Molucca Sea    2026.04.02-02:11:02.72    q:B      mb:5.1*    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: 5.1* [39]    Mwp: - [0]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.04.02-02:11:02.72 UTC Hypocenter: lat: 1.31°  lon: 126.42°  [+/-17km]    depth: 68km  [+/-21km] Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 83   usedPhases: 59 minDist: 1.1°   maxDist: 159.3°   AzGap: 44°   2ndAzGap: 51°   atten: -0.91 [+/-0.21] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 15km   maxHorUnc: 17km   azMaxHorUnc: 145° 68%ConfEllipsoid:   semiMajorAxisLength: 23km   majorAxisAzimuth: 177°   majorAxisPlunge: 46°   semiIntermediateAxisLength: 20km   intermediateAxisAzimuth: 292°   intermediateAxisPlunge: 22°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [25]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.9s [22] 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: ~130km    Molucca Sea / Sunda [subduction zone]: distance: ~130km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (40km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        68km        68km        68km 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: 297°   dip: 41°   rake: 37° Nodal Plane 2: strike: 177°   dip: 67°   rake: 125° Quality: azimuthalGap: -1°   stationPolarityCount: 35   misfitWeightCount: 15.2   misfit: 0.16   stationDistributionRatio: 0.45   meanDistP: 41.5   meanDistT: 46.3   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: 38°   dip: 74°   rake: 168° Nodal Plane 2: strike: 132°   dip: 78°   rake: 16° Quality: azimuthalGap: 81°   stationPolarityCount: 35   misfit: 0.30   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 38.06   fracAcc30degPref: 0.61   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775095863207
Event info last updated: 2026.04.02-03:10:01 UTC
Event first association/location: 2026.04.02-02:18:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA