Early-est:     Sumbawa Region, Indonesia    2026.10.05-12:17:21.36    q:C      mb:4.0    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: 4.0 [7]    Mwp: - [0]    Mwpd: - [0] Region: Sumbawa Region, Indonesia Origin Time: 2026.10.05-12:17:21.36 UTC Hypocenter: lat: -9.78°  lon: 118.77°  [+/-15km]    depth: 10km  [+/-16km] Location Quality: qualityCode:  C     stdErr: 1.0s   assocPhases: 11   usedPhases: 8 minDist: 4.9°   maxDist: 124.4°   AzGap: 125°   2ndAzGap: 151°   atten: -0.60 [+/-0.61] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 80° 68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 262°   majorAxisPlunge: 13°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 358°   intermediateAxisPlunge: 22°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.6 [7]    Td: 7.8Xs [2]    Td*T50Ex: - [0]    To: 49.7Xs [1] Closest plate boundaries:    Sunda / Australia [subduction zone]: distance: ~180km Subduction geometry:    Zone: Sumatra-Java    Slab depth at epicenter: 34km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (180km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        10km        10km        10km Slab depth at epicenter:        34km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (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/_polarity
First-motion Focal Mechanism (HASH):    (No solution available) Nodal Plane 1: strike: 999°   dip: 99°   rake: 999° Nodal Plane 2: strike: 324°   dip: 13°   rake: 135° Quality: azimuthalGap: 0°   stationPolarityCount: 7   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: F 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/1791202641361
Event info last updated: 2026.10.05-13:17:40 UTC
Event first association/location: 2026.10.05-13:16:41 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI