Early-est:     Minahassa Peninsula, Sulawesi    2025.08.02-20:33:57.98    q:B      mb:4.3*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754166851459.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754166851459.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754166851459.mech.hash.thumb.jpg

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

Earthquake Details:
Magnitude: mb: 4.3* [9]    Mwp: 4.5X [1]    Mwpd: - [0]
Region: Minahassa Peninsula, Sulawesi
Origin Time: 2025.08.02-20:33:57.98 UTC
Hypocenter: lat: 0.05°  lon: 123.29°  [+/-15km]    depth: 130km  [+/-16km]
Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 35   usedPhases: 16
minDist: 1.2°   maxDist: 158.4°   AzGap: 61°   2ndAzGap: 104°   atten: -1.07 [+/-0.34]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 15km   azMaxHorUnc: 116°
68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 296°   majorAxisPlunge: 13°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 119°   intermediateAxisPlunge: 77°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4X [1]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.9Xs [1]
Closest plate boundaries:
   Molucca Sea - Sunda [continental transform fault]: distance: ~90km
   Molucca Sea / Sunda [subduction zone]: distance: ~220km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (220km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       130km
       130km
       130km
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)
./hypo.1754166851459.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 43°   dip: 57°   rake: 155°
Nodal Plane 2: strike: 147°   dip: 69°   rake: 36°
Quality: azimuthalGap: -1°   stationPolarityCount: 14   misfitWeightCount: 6.1   misfit: 0.07   stationDistributionRatio: 0.50   meanDistP: 47.5   meanDistT: 51.7   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754166851459.mech.fmamp_polarity.mechanism.jpg
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
./hypo.1754166851459.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 354°   dip: 32°   rake: 67°
Nodal Plane 2: strike: 200°   dip: 61°   rake: 103°
Quality: azimuthalGap: 89°   stationPolarityCount: 14   misfit: 0.29   stationDistributionRatio: 0.78   rmsAngDiffAccPref: 41.81   fracAcc30degPref: 0.48   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754166851459.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754166851459
Event info last updated: 2025.08.02-21:32:06 UTC
Event first association/location: 2025.08.02-20:40:04 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA