Early-est:     Northern Molucca Sea    2026.04.03-10:59:12.82    q:B      mb:4.9*    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: 4.9* [27]    Mwp: 4.8X [1]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.04.03-10:59:12.82 UTC Hypocenter: lat: 1.48°  lon: 126.64°  [+/-28km]    depth: 74km  [+/-42km] Location Quality: qualityCode:  B     stdErr: 2.2s   assocPhases: 61   usedPhases: 36 minDist: 1.0°   maxDist: 147.9°   AzGap: 63°   2ndAzGap: 96°   atten: -1.14 [+/-0.24] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 19km   maxHorUnc: 28km   azMaxHorUnc: 88° 68%ConfEllipsoid:   semiMajorAxisLength: 48km   majorAxisAzimuth: 95°   majorAxisPlunge: 56°   semiIntermediateAxisLength: 27km   intermediateAxisAzimuth: 238°   intermediateAxisPlunge: 28°   semiMinorAxisLength: 22km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [18]    Td: 1.3Xs [3]    Td*T50Ex: - [0]    To: 11.6s [15] Closest plate boundaries:    Birds Head / Sunda [subduction zone]: distance: ~30km    Molucca Sea \ Sunda [subduction zone]: distance: ~30km    Molucca Sea \ Birds Head [subduction zone]: distance: ~30km    Sunda - Birds Head [oceanic convergent boundary]: distance: ~100km    Molucca Sea / Sunda [subduction zone]: distance: ~160km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (30km)  YES (100km)  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - 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: 126°   dip: 46°   rake: 169° Nodal Plane 2: strike: 223°   dip: 82°   rake: 45° Quality: azimuthalGap: -1°   stationPolarityCount: 29   misfitWeightCount: 11.2   misfit: 0.14   stationDistributionRatio: 0.50   meanDistP: 30.7   meanDistT: 47.7   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: 152°   dip: 22°   rake: 156° Nodal Plane 2: strike: 264°   dip: 81°   rake: 70° Quality: azimuthalGap: 76°   stationPolarityCount: 29   misfit: 0.24   stationDistributionRatio: 0.78   rmsAngDiffAccPref: 27.41   fracAcc30degPref: 0.80   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775213952793
Event info last updated: 2026.04.03-11:58:01 UTC
Event first association/location: 2026.04.03-11:06:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA