Early-est:     Northern Molucca Sea    2026.04.03-04:42:05.07    q:B      mb:5.2*    Mwp:-    Mwpd:-    Td*T50Ex:0.5     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: 5.2* [42]    Mwp: 5.0X [1]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.04.03-04:42:05.07 UTC Hypocenter: lat: 1.29°  lon: 126.19°  [+/-17km]    depth: 15km  [+/-35km] Location Quality: qualityCode:  B     stdErr: 1.4s   assocPhases: 82   usedPhases: 57 minDist: 1.3°   maxDist: 159.4°   AzGap: 44°   2ndAzGap: 45°   atten: -0.97 [+/-0.21] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 17km   azMaxHorUnc: 114° 68%ConfEllipsoid:   semiMajorAxisLength: 37km   majorAxisAzimuth: 119°   majorAxisPlunge: 71°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 275°   intermediateAxisPlunge: 18°   semiMinorAxisLength: 17km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [33]    Td: 1.2s [4]    Td*T50Ex: 0.5 [4]    To: 2.4s [31] 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: ~120km 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:    0.5    0.5    0.5 Td*To:      2.9      2.9      2.9 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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 351°   dip: 71°   rake: 164° Nodal Plane 2: strike: 87°   dip: 75°   rake: 19° Quality: azimuthalGap: -1°   stationPolarityCount: 43   misfitWeightCount: 11.3   misfit: 0.23   stationDistributionRatio: 0.32   meanDistP: 54.9   meanDistT: 52.6   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: 325°   dip: 75°   rake: -170° Nodal Plane 2: strike: 232°   dip: 80°   rake: -15° Quality: azimuthalGap: 79°   stationPolarityCount: 43   misfit: 0.29   stationDistributionRatio: 0.76   rmsAngDiffAccPref: 49.03   fracAcc30degPref: 0.31   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775191332564
Event info last updated: 2026.04.03-05:41:00 UTC
Event first association/location: 2026.04.03-04:48:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA