Early-est:     Mindanao, Philippines    2026.08.13-09:23:00.12    q:A      mb:5.2*    Mwp:-    Mwpd:-    Td*T50Ex:0.5     fmamp_polarity:./hypo.1786612980759.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786612980759.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786612980759.mech.hash.thumb.jpg

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

Earthquake Details:
Magnitude: mb: 5.2* [34]    Mwp: 5.1X [2]    Mwpd: 5.4Xinv [2]
Region: Mindanao, Philippines
Origin Time: 2026.08.13-09:23:00.12 UTC
Hypocenter: lat: 6.24°  lon: 126.05°  [+/-14km]    depth: 90km  [+/-18km]
Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 75   usedPhases: 47
minDist: 5.6°   maxDist: 151.2°   AzGap: 54°   2ndAzGap: 66°   atten: -1.34 [+/-0.30]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 14km   azMaxHorUnc: 101°
68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 289°   majorAxisPlunge: 55°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 96°   intermediateAxisPlunge: 34°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [34]    Td: 1.0s [6]    Td*T50Ex: 0.5 [6]    To: 10.5s [31]
Closest plate boundaries:
   Philippine Sea \ Sunda [subduction zone]: distance: ~130km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (130km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.5
   0.5
   0.5
Td*To:
     10.5
     10.5
     10.5
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       90km
       90km
       90km
Slab depth at epicenter:
       n/a
       -
       -
Tsunami and Rupture predictions (TEST!): No prediction: Event too small (Mwp<7.0) or too few Mwp readings (N<20)
./hypo.1786612980759.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 144°   dip: 36°   rake: 1°
Nodal Plane 2: strike: 53°   dip: 89°   rake: 126°
Quality: azimuthalGap: -1°   stationPolarityCount: 32   misfitWeightCount: 9.0   misfit: 0.15   stationDistributionRatio: 0.55   meanDistP: 35.9   meanDistT: 37.8   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786612980759.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (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/_polarity_waveform
./hypo.1786612980759.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 65°   dip: 87°   rake: 126°
Nodal Plane 2: strike: 158°   dip: 36°   rake: 5°
Quality: azimuthalGap: 92°   stationPolarityCount: 32   misfit: 0.34   stationDistributionRatio: 0.84   rmsAngDiffAccPref: 35.11   fracAcc30degPref: 0.63   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786612980759.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786612980759
Event info last updated: 2026.08.13-10:21:00 UTC
Event first association/location: 2026.08.13-09:29:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA