Early-est:     Sulawesi, Indonesia    2026.03.26-04:39:53.01    q:C      mb:5.0*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1774499992263.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1774499992263.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1774499992263.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: 5.0* [9]    Mwp: 5.0X [3]    Mwpd: 5.0Xinv [2]
Region: Sulawesi, Indonesia
Origin Time: 2026.03.26-04:39:53.01 UTC
Hypocenter: lat: -3.72°  lon: 123.29°  [+/-23km]    depth: 15km  [+/-46km]
Location Quality: qualityCode:  C     stdErr: 1.2s   assocPhases: 16   usedPhases: 13
minDist: 2.7°   maxDist: 162.9°   AzGap: 80°   2ndAzGap: 138°   atten: -1.63 [+/-0.32]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 23km   azMaxHorUnc: 150°
68%ConfEllipsoid:   semiMajorAxisLength: 49km   majorAxisAzimuth: 349°   majorAxisPlunge: 67°   semiIntermediateAxisLength: 25km   intermediateAxisAzimuth: 124°   intermediateAxisPlunge: 17°   semiMinorAxisLength: 18km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.3 [7]    Td: 0.8Xs [3]    Td*T50Ex: - [0]    To: 25.3s [7]
Closest plate boundaries:
   Molucca Sea - Banda Sea [oceanic convergent boundary]: distance: ~50km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (50km)
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       15km
       15km
       15km
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.1774499992263.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 109°   dip: 14°   rake: 16°
Nodal Plane 2: strike: 4°   dip: 86°   rake: 104°
Quality: azimuthalGap: -1°   stationPolarityCount: 12   misfitWeightCount: 7.1   misfit: 0.03   stationDistributionRatio: 0.63   meanDistP: 32.1   meanDistT: 34.2   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1774499992263.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.1774499992263.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 199°   dip: 13°   rake: 122°
Nodal Plane 2: strike: 346°   dip: 79°   rake: 83°
Quality: azimuthalGap: 80°   stationPolarityCount: 12   misfit: 0.16   stationDistributionRatio: 0.80   rmsAngDiffAccPref: 39.84   fracAcc30degPref: 0.50   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1774499992263.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1774499992263
Event info last updated: 2026.03.26-05:38:01 UTC
Event first association/location: 2026.03.26-04:44:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA