Early-est:     Northern Molucca Sea    2026.04.01-23:07:31.89    q:B      mb:5.1*    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: 5.1* [22]    Mwp: - [0]    Mwpd: - [0] Region: Northern Molucca Sea Origin Time: 2026.04.01-23:07:31.89 UTC Hypocenter: lat: 1.06°  lon: 126.61°  [+/-13km]    depth: 105km  [+/-17km] Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 54   usedPhases: 31 minDist: 6.9°   maxDist: 154.4°   AzGap: 47°   2ndAzGap: 81°   atten: -0.70 [+/-0.34] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 13km   azMaxHorUnc: 84° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 259°   majorAxisPlunge: 63°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 86°   intermediateAxisPlunge: 27°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [21]    Td: -s [0]    Td*T50Ex: - [0]    To: 16.9s [21] Closest plate boundaries:    Molucca Sea \ Sunda [subduction zone]: distance: ~50km    Molucca Sea \ Birds Head [subduction zone]: distance: ~50km    Birds Head / Sunda [subduction zone]: distance: ~70km    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 (50km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        105km        105km        105km 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: 64°   dip: 41°   rake: 18° Nodal Plane 2: strike: 320°   dip: 78°   rake: 130° Quality: azimuthalGap: -1°   stationPolarityCount: 23   misfitWeightCount: 7.0   misfit: 0.23   stationDistributionRatio: 0.35   meanDistP: 55.7   meanDistT: 56.3   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: 333°   dip: 81°   rake: 149° Nodal Plane 2: strike: 68°   dip: 59°   rake: 11° Quality: azimuthalGap: 97°   stationPolarityCount: 23   misfit: 0.37   stationDistributionRatio: 0.88   rmsAngDiffAccPref: 47.36   fracAcc30degPref: 0.45   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1775084851921
Event info last updated: 2026.04.02-00:06:01 UTC
Event first association/location: 2026.04.01-23:14:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA