Early-est:     Northern Molucca Sea    2026.04.02-03:17:55.96    q:B      mb:5.3*    Mwp:-    Mwpd:-    Td*T50Ex:1.0     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* [61]    Mwp: 5.8X [2]    Mwpd: 6.8Xinv [1] Region: Northern Molucca Sea Origin Time: 2026.04.02-03:17:55.96 UTC Hypocenter: lat: 1.23°  lon: 126.45°  [+/-30km]    depth: 32km  [+/-52km] Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 140   usedPhases: 72 minDist: 1.0°   maxDist: 159.2°   AzGap: 44°   2ndAzGap: 48°   atten: -1.16 [+/-0.18] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 26km   maxHorUnc: 30km   azMaxHorUnc: 86° 68%ConfEllipsoid:   semiMajorAxisLength: 56km   majorAxisAzimuth: 240°   majorAxisPlunge: 65°   semiIntermediateAxisLength: 34km   intermediateAxisAzimuth: 123°   intermediateAxisPlunge: 12°   semiMinorAxisLength: 29km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [54]    Td: 1.9s [21]    Td*T50Ex: 1.0 [21]    To: 19.7s [48] Closest plate boundaries:    Molucca Sea \ Sunda [subduction zone]: distance: ~40km    Molucca Sea \ Birds Head [subduction zone]: distance: ~40km    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 (40km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    1.0    1.0    1.0 Td*To:      37.4      37.4      37.4 Mwp magnitude:        -        -        - Hypocenter depth:        32km        32km        32km 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: 37°   dip: 43°   rake: 69° Nodal Plane 2: strike: 245°   dip: 51°   rake: 108° Quality: azimuthalGap: -1°   stationPolarityCount: 63   misfitWeightCount: 17.3   misfit: 0.14   stationDistributionRatio: 0.67   meanDistP: 40.7   meanDistT: 24.6   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: 279°   dip: 60°   rake: 127° Nodal Plane 2: strike: 43°   dip: 46°   rake: 45° Quality: azimuthalGap: 81°   stationPolarityCount: 63   misfit: 0.23   stationDistributionRatio: 0.73   rmsAngDiffAccPref: 39.15   fracAcc30degPref: 0.47   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775099877656
Event info last updated: 2026.04.02-04:16:01 UTC
Event first association/location: 2026.04.02-03:23:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA