Early-est:     Northern Molucca Sea    2026.04.02-10:21:30.24    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* [9]    Mwp: - [0]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.04.02-10:21:30.24 UTC Hypocenter: lat: 1.91°  lon: 126.47°  [+/-48km]    depth: 59km  [+/-43km] Location Quality: qualityCode:  C     stdErr: 2.0s   assocPhases: 42   usedPhases: 15 minDist: 1.4°   maxDist: 146.4°   AzGap: 162°   2ndAzGap: 258°   atten: -1.31 [+/-0.42] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 21km   maxHorUnc: 48km   azMaxHorUnc: 175° 68%ConfEllipsoid:   semiMajorAxisLength: 60km   majorAxisAzimuth: 354°   majorAxisPlunge: 11°   semiIntermediateAxisLength: 43km   intermediateAxisAzimuth: 222°   intermediateAxisPlunge: 74°   semiMinorAxisLength: 25km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [10]    Td: 1.5Xs [1]    Td*T50Ex: - [0]    To: 15.2s [8] Closest plate boundaries:    Birds Head / Sunda [subduction zone]: distance: ~20km    Molucca Sea \ Sunda [subduction zone]: distance: ~20km    Molucca Sea \ Birds Head [subduction zone]: distance: ~20km    Sunda - Birds Head [oceanic convergent boundary]: distance: ~70km    Molucca Sea / Sunda [subduction zone]: distance: ~200km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (20km)  YES (70km)  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        59km        59km        59km 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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 172°   dip: 53°   rake: -7° Nodal Plane 2: strike: 266°   dip: 84°   rake: -143° Quality: azimuthalGap: -1°   stationPolarityCount: 15   misfitWeightCount: 5.6   misfit: 0.04   stationDistributionRatio: 0.49   meanDistP: 50.3   meanDistT: 41.3   qualityCode: D 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: 284°   dip: 72°   rake: -145° Nodal Plane 2: strike: 182°   dip: 57°   rake: -22° Quality: azimuthalGap: 101°   stationPolarityCount: 15   misfit: 0.22   stationDistributionRatio: 0.65   rmsAngDiffAccPref: 39.63   fracAcc30degPref: 0.44   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775125291726
Event info last updated: 2026.04.02-11:20:00 UTC
Event first association/location: 2026.04.02-10:36:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA