Early-est:     Flores Region, Indonesia    2026.10.08-04:49:10.02    q:B      mb:4.6    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: 4.6 [17]    Mwp: - [0]    Mwpd: - [0] Region: Flores Region, Indonesia Origin Time: 2026.10.08-04:49:10.02 UTC Hypocenter: lat: -8.40°  lon: 120.62°  [+/-14km]    depth: 20km  [+/-14km] Location Quality: qualityCode:  B     stdErr: 1.6s   assocPhases: 47   usedPhases: 20 minDist: 3.5°   maxDist: 159.3°   AzGap: 99°   2ndAzGap: 142°   atten: -0.92 [+/-0.25] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 128° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 128°   majorAxisPlunge: 0°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 38°   intermediateAxisPlunge: 2°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.5 [12]    Td: -s [0]    Td*T50Ex: - [0]    To: 12.7s [6] Closest plate boundaries:    Sunda - Timor [continental transform fault]: distance: ~10km    Banda Sea - Sunda [continental transform fault]: distance: ~70km    Banda Sea - Timor [oceanic convergent boundary]: distance: ~70km Subduction geometry:    Zone: Sumatra-Java    Slab depth at epicenter: 204km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  no  YES (70km)  YES (10km) Prob underwater:  <1%  <1%  <1% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        20km        20km        20km Slab depth at epicenter:        204km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 96°   dip: 25°   rake: 126° Nodal Plane 2: strike: 237°   dip: 70°   rake: 75° Quality: azimuthalGap: -1°   stationPolarityCount: 17   misfitWeightCount: 4.8   misfit: 0.14   stationDistributionRatio: 0.35   meanDistP: 46.0   meanDistT: 39.4   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 197°   dip: 79°   rake: -170° Nodal Plane 2: strike: 105°   dip: 80°   rake: -11° Quality: azimuthalGap: 125°   stationPolarityCount: 17   misfit: 0.34   stationDistributionRatio: 0.74   rmsAngDiffAccPref: 48.61   fracAcc30degPref: 0.43   qualityCode: D 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: 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
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

Event ID: smi:KOERI/ee/event/1791434950115
Event info last updated: 2026.10.08-05:49:42 UTC
Event first association/location: 2026.10.08-05:01:39 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI