Early-est:     Northern Molucca Sea    2026.04.02-14:34:59.54    q:A      mb:5.3*    Mwp:-    Mwpd:-    Td*T50Ex:1.8     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: 5.3* [64]    Mwp: 6.3X [2]    Mwpd: 6.4Xinv [2] Region: Northern Molucca Sea Origin Time: 2026.04.02-14:34:59.54 UTC Hypocenter: lat: 1.26°  lon: 126.56°  [+/-13km]    depth: 15km  [+/-14km] Location Quality: qualityCode:  A     stdErr: 2.2s   assocPhases: 135   usedPhases: 83 minDist: 0.9°   maxDist: 159.1°   AzGap: 44°   2ndAzGap: 52°   atten: -0.97 [+/-0.21] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 13km   azMaxHorUnc: 74° 68%ConfEllipsoid:   semiMajorAxisLength: 16km   majorAxisAzimuth: 254°   majorAxisPlunge: 0°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 344°   intermediateAxisPlunge: 1°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.6 [55]    Td: 3.2s [8]    Td*T50Ex: 1.8 [8]    To: 32.7s [49] Closest plate boundaries:    Birds Head / Sunda [subduction zone]: distance: ~50km    Molucca Sea \ Sunda [subduction zone]: distance: ~50km    Molucca Sea \ Birds Head [subduction zone]: distance: ~50km    Sunda - Birds Head [oceanic convergent boundary]: distance: ~130km    Molucca Sea / Sunda [subduction zone]: distance: ~140km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (50km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    1.8    1.8    1.8 Td*To:      104.6      104.6      104.6 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: 71°   dip: 33°   rake: 154° Nodal Plane 2: strike: 183°   dip: 76°   rake: 59° Quality: azimuthalGap: -1°   stationPolarityCount: 59   misfitWeightCount: 15.8   misfit: 0.22   stationDistributionRatio: 0.41   meanDistP: 46.0   meanDistT: 35.3   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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 22°   dip: 32°   rake: 147° Nodal Plane 2: strike: 141°   dip: 73°   rake: 63° Quality: azimuthalGap: 58°   stationPolarityCount: 59   misfit: 0.46   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 47.38   fracAcc30degPref: 0.36   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775140506354
Event info last updated: 2026.04.02-15:33:00 UTC
Event first association/location: 2026.04.02-14:40:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA