Early-est:     Northern Molucca Sea    2026.04.02-16:10:26.03    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* [35]    Mwp: 5.1X [1]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.04.02-16:10:26.03 UTC Hypocenter: lat: 1.29°  lon: 126.27°  [+/-20km]    depth: 15km  [+/-55km] Location Quality: qualityCode:  B     stdErr: 2.1s   assocPhases: 75   usedPhases: 47 minDist: 1.2°   maxDist: 159.3°   AzGap: 36°   2ndAzGap: 69°   atten: -1.13 [+/-0.26] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 20km   azMaxHorUnc: 64° 68%ConfEllipsoid:   semiMajorAxisLength: 55km   majorAxisAzimuth: 158°   majorAxisPlunge: 85°   semiIntermediateAxisLength: 25km   intermediateAxisAzimuth: 64°   intermediateAxisPlunge: 0°   semiMinorAxisLength: 20km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [26]    Td: 1.7Xs [3]    Td*T50Ex: - [0]    To: 4.1s [24] Closest plate boundaries:    Molucca Sea \ Sunda [subduction zone]: distance: ~30km    Molucca Sea \ Birds Head [subduction zone]: distance: ~30km    Birds Head / Sunda [subduction zone]: distance: ~50km    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 (30km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        15km        15km        15km 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: 175°   dip: 21°   rake: -106° Nodal Plane 2: strike: 12°   dip: 70°   rake: -84° Quality: azimuthalGap: -1°   stationPolarityCount: 34   misfitWeightCount: 10.7   misfit: 0.16   stationDistributionRatio: 0.46   meanDistP: 32.8   meanDistT: 38.8   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: 234°   dip: 31°   rake: -58° Nodal Plane 2: strike: 18°   dip: 65°   rake: -108° Quality: azimuthalGap: 70°   stationPolarityCount: 35   misfit: 0.19   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 28.07   fracAcc30degPref: 0.75   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775146226607
Event info last updated: 2026.04.02-17:09:00 UTC
Event first association/location: 2026.04.02-16:17:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA