Early-est:     Minahassa Peninsula, Sulawesi    2026.10.07-10:57:30.77    q:B      mb:4.7    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 4.7 [16]    Mwp: - [0]    Mwpd: - [0] Region: Minahassa Peninsula, Sulawesi Origin Time: 2026.10.07-10:57:30.77 UTC Hypocenter: lat: 1.60°  lon: 124.64°  [+/-14km]    depth: 99km  [+/-19km] Location Quality: qualityCode:  B     stdErr: 0.5s   assocPhases: 49   usedPhases: 21 minDist: 16.3°   maxDist: 128.3°   AzGap: 138°   2ndAzGap: 171°   atten: -0.67 [+/-0.49] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 14km   azMaxHorUnc: 99° 68%ConfEllipsoid:   semiMajorAxisLength: 21km   majorAxisAzimuth: 130°   majorAxisPlunge: 60°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 259°   intermediateAxisPlunge: 20°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.0 [9]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.4s [7] Closest plate boundaries:    Molucca Sea - Sunda [continental transform fault]: distance: ~130km    Molucca Sea / Sunda [subduction zone]: distance: ~140km    Molucca Sea \ Sunda [subduction zone]: distance: ~180km    Molucca Sea \ Birds Head [subduction zone]: distance: ~180km    Birds Head / 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 (140km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        99km        99km        99km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 88°   dip: 58°   rake: 165° Nodal Plane 2: strike: 186°   dip: 77°   rake: 32° Quality: azimuthalGap: -1°   stationPolarityCount: 19   misfitWeightCount: 6.2   misfit: 0.09   stationDistributionRatio: 0.42   meanDistP: 51.0   meanDistT: 31.5   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 109°   dip: 85°   rake: 136° Nodal Plane 2: strike: 204°   dip: 46°   rake: 7° Quality: azimuthalGap: 137°   stationPolarityCount: 19   misfit: 0.23   stationDistributionRatio: 0.86   rmsAngDiffAccPref: 34.31   fracAcc30degPref: 0.59   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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/_amp_aref
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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/_amp_mwp

Event ID: smi:KOERI/ee/event/1791370650758
Event info last updated: 2026.10.07-11:57:44 UTC
Event first association/location: 2026.10.07-11:26:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI