Early-est:     Minahassa Peninsula, Sulawesi    2025.12.13-20:09:42.31    q:B      mb:4.7    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1765656579792.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765656579792.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765656579792.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765656579792.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: 4.7 [28]    Mwp: - [0]    Mwpd: - [0]
Region: Minahassa Peninsula, Sulawesi
Origin Time: 2025.12.13-20:09:42.31 UTC
Hypocenter: lat: -0.06°  lon: 121.77°  [+/-15km]    depth: 188km  [+/-24km]
Location Quality: qualityCode:  B     stdErr: 1.2s   assocPhases: 56   usedPhases: 30
minDist: 5.3°   maxDist: 144.3°   AzGap: 80°   2ndAzGap: 151°   atten: -0.83 [+/-0.27]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 15km   azMaxHorUnc: 57°
68%ConfEllipsoid:   semiMajorAxisLength: 25km   majorAxisAzimuth: 249°   majorAxisPlunge: 73°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 53°   intermediateAxisPlunge: 17°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.0 [19]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.2s [13]
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:
       188km
       188km
       188km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1765656579792.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 198°   dip: 79°   rake: 4°
Nodal Plane 2: strike: 107°   dip: 86°   rake: 169°
Quality: azimuthalGap: -1°   stationPolarityCount: 30   misfitWeightCount: 10.5   misfit: 0.12   stationDistributionRatio: 0.52   meanDistP: 47.2   meanDistT: 27.8   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1765656579792.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 304°   dip: 57°   rake: -153°
Nodal Plane 2: strike: 198°   dip: 68°   rake: -36°
Quality: azimuthalGap: 91°   stationPolarityCount: 30   misfit: 0.41   stationDistributionRatio: 0.76   rmsAngDiffAccPref: 37.05   fracAcc30degPref: 0.62   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765656579792.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.1765656579792.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.1765656579792.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765656579792
Event info last updated: 2025.12.13-21:10:03 UTC
Event first association/location: 2025.12.13-20:15:43 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI