Early-est:     Philippine Islands Region    2025.11.12-12:02:22.24    q:B      mb:5.0    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: 5.0 [44]    Mwp: - [0]    Mwpd: - [0] Region: Philippine Islands Region Origin Time: 2025.11.12-12:02:22.24 UTC Hypocenter: lat: 20.79°  lon: 121.14°  [+/-13km]    depth: 10km  [+/-12km] Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 78   usedPhases: 52 minDist: 2.0°   maxDist: 148.1°   AzGap: 80°   2ndAzGap: 85°   atten: -1.17 [+/-0.15] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 13km   azMaxHorUnc: 80° 68%ConfEllipsoid:   semiMajorAxisLength: 16km   majorAxisAzimuth: 80°   majorAxisPlunge: 2°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 349°   intermediateAxisPlunge: 15°   semiMinorAxisLength: 12km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [33]    Td: 2.2Xs [2]    Td*T50Ex: - [0]    To: 3.3s [28] Closest plate boundaries:    Philippine Sea / Sunda [subduction zone]: distance: ~90km    Yangtze - Sunda [continental convergent boundary]: distance: ~120km    Philippine Sea - Yangtze [continental convergent boundary]: distance: ~120km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (90km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        10km        10km        10km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 104°   dip: 36°   rake: -117° Nodal Plane 2: strike: 315°   dip: 59°   rake: -72° Quality: azimuthalGap: -1°   stationPolarityCount: 39   misfitWeightCount: 10.1   misfit: 0.16   stationDistributionRatio: 0.50   meanDistP: 23.0   meanDistT: 28.1   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 145°   dip: 28°   rake: -93° Nodal Plane 2: strike: 328°   dip: 62°   rake: -88° Quality: azimuthalGap: 80°   stationPolarityCount: 39   misfit: 0.19   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 26.81   fracAcc30degPref: 0.75   qualityCode: C 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/1762948940295
Event info last updated: 2025.11.12-13:03:12 UTC
Event first association/location: 2025.11.12-12:07:35 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI