Early-est:     Mindanao, Philippines    2025.12.15-04:30:49.66    q:C      mb:4.5    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: 4.5 [10]    Mwp: - [0]    Mwpd: - [0] Region: Mindanao, Philippines Origin Time: 2025.12.15-04:30:49.66 UTC Hypocenter: lat: 6.11°  lon: 125.98°  [+/-20km]    depth: 115km  [+/-29km] Location Quality: qualityCode:  C     stdErr: 1.8s   assocPhases: 15   usedPhases: 14 minDist: 1.0°   maxDist: 158.0°   AzGap: 135°   2ndAzGap: 176°   atten: -1.34 [+/-0.51] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 20km   azMaxHorUnc: 154° 68%ConfEllipsoid:   semiMajorAxisLength: 36km   majorAxisAzimuth: 333°   majorAxisPlunge: 51°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 235°   intermediateAxisPlunge: 6°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [6]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.2Xs [3] Closest plate boundaries:    Philippine Sea \ Sunda [subduction zone]: distance: ~150km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (150km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        115km        115km        115km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 154°   dip: 4°   rake: -13° Nodal Plane 2: strike: 257°   dip: 89°   rake: -94° Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 3.8   misfit: 0.08   stationDistributionRatio: 0.74   meanDistP: 42.0   meanDistT: 31.3   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: 14°   dip: 8°   rake: -141° Nodal Plane 2: strike: 245°   dip: 85°   rake: -84° Quality: azimuthalGap: 135°   stationPolarityCount: 13   misfit: 0.29   stationDistributionRatio: 0.85   rmsAngDiffAccPref: 43.06   fracAcc30degPref: 0.33   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: 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/1765773049563
Event info last updated: 2025.12.15-05:31:01 UTC
Event first association/location: 2025.12.15-04:40:48 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI