Early-est:     Minahassa Peninsula, Sulawesi    2025.12.12-04:29:25.69    q:B      mb:4.6    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1765513766593.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765513766593.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765513766593.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765513766593.mech.fmamp_amp_mwp.thumb.jpg

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

Earthquake Details:
Magnitude: mb: 4.6 [36]    Mwp: - [0]    Mwpd: - [0]
Region: Minahassa Peninsula, Sulawesi
Origin Time: 2025.12.12-04:29:25.69 UTC
Hypocenter: lat: 0.09°  lon: 121.97°  [+/-15km]    depth: 205km  [+/-21km]
Location Quality: qualityCode:  B     stdErr: 0.9s   assocPhases: 77   usedPhases: 48
minDist: 5.6°   maxDist: 161.0°   AzGap: 102°   2ndAzGap: 124°   atten: -0.88 [+/-0.19]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 15km   azMaxHorUnc: 63°
68%ConfEllipsoid:   semiMajorAxisLength: 22km   majorAxisAzimuth: 234°   majorAxisPlunge: 58°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 77°   intermediateAxisPlunge: 30°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.0 [20]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.5s [17]
Closest plate boundaries:
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       205km
       205km
       205km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1765513766593.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 146°   dip: 31°   rake: 67°
Nodal Plane 2: strike: 351°   dip: 62°   rake: 103°
Quality: azimuthalGap: -1°   stationPolarityCount: 46   misfitWeightCount: 10.8   misfit: 0.16   stationDistributionRatio: 0.44   meanDistP: 43.4   meanDistT: 36.7   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1765513766593.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 253°   dip: 71°   rake: 159°
Nodal Plane 2: strike: 350°   dip: 70°   rake: 20°
Quality: azimuthalGap: 96°   stationPolarityCount: 46   misfit: 0.27   stationDistributionRatio: 0.73   rmsAngDiffAccPref: 25.87   fracAcc30degPref: 0.87   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765513766593.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (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/_amp_aref
./hypo.1765513766593.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (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/_amp_mwp
./hypo.1765513766593.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765513766593
Event info last updated: 2025.12.12-05:29:50 UTC
Event first association/location: 2025.12.12-04:35:41 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI