Early-est:     Mindanao, Philippines    2025.12.13-02:01:59.85    q:B      mb:4.5    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1765591319230.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765591319230.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765591319230.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765591319230.mech.fmamp_amp_mwp.thumb.jpg

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details:
Magnitude: mb: 4.5 [15]    Mwp: 4.5X [1]    Mwpd: - [0]
Region: Mindanao, Philippines
Origin Time: 2025.12.13-02:01:59.85 UTC
Hypocenter: lat: 7.48°  lon: 126.96°  [+/-12km]    depth: 31km  [+/-16km]
Location Quality: qualityCode:  B     stdErr: 2.1s   assocPhases: 53   usedPhases: 17
minDist: 1.4°   maxDist: 149.6°   AzGap: 124°   2ndAzGap: 183°   atten: -1.17 [+/-0.35]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 12km   azMaxHorUnc: 160°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 34°   majorAxisPlunge: 63°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 139°   intermediateAxisPlunge: 8°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [8]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.2s [7]
Closest plate boundaries:
   Philippine Sea \ Sunda [subduction zone]: distance: ~40km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (40km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       31km
       31km
       31km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1765591319230.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 68°   dip: 22°   rake: -138°
Nodal Plane 2: strike: 298°   dip: 76°   rake: -73°
Quality: azimuthalGap: -1°   stationPolarityCount: 12   misfitWeightCount: 3.1   misfit: 0.04   stationDistributionRatio: 0.55   meanDistP: 36.5   meanDistT: 40.3   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1765591319230.mech.fmamp_polarity.mechanism.jpg
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: 189°   stationPolarityCount: 12   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765591319230.mech.hash.mechanism.jpg
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
./hypo.1765591319230.mech.fmamp_amp_aref.mechanism.jpg
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
./hypo.1765591319230.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765591319230
Event info last updated: 2025.12.13-03:02:02 UTC
Event first association/location: 2025.12.13-02:18:12 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI