Early-est:     Mindanao, Philippines    2026.06.26-11:34:41.87    q:B      mb:5.6    Mwp:6.3*    Mwpd:-    Td*T50Ex:2.0     fmamp_polarity:./hypo.1782473683484.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1782473683484.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1782473683484.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: 5.6 [104]    Mwp: 6.3* [65]    Mwpd: 6.5Xinv [71]
Region: Mindanao, Philippines
Origin Time: 2026.06.26-11:34:41.87 UTC
Hypocenter: lat: 5.39°  lon: 125.20°  [+/-16km]    depth: 30km  [+/-34km]
Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 300   usedPhases: 150
minDist: 1.7°   maxDist: 157.2°   AzGap: 37°   2ndAzGap: 42°   atten: -1.77 [+/-0.18]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 16km   azMaxHorUnc: 21°
68%ConfEllipsoid:   semiMajorAxisLength: 35km   majorAxisAzimuth: 136°   majorAxisPlunge: 81°   semiIntermediateAxisLength: 19km   intermediateAxisAzimuth: 28°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 17km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6 [99]    Td: 3.3s [44]    Td*T50Ex: 2.0 [44]    To: 40.5s [99]
Closest plate boundaries:
   Philippine Sea \ Sunda [subduction zone]: distance: ~250km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   2.0
   2.0
   2.0
Td*To:
     133.7
     133.7
     133.7
Mwp magnitude:
       6.3*
       6.3*
       6.3*
Hypocenter depth:
       30km
       30km
       30km
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.1782473683484.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 61°   dip: 83°   rake: -176°
Nodal Plane 2: strike: 331°   dip: 86°   rake: -7°
Quality: azimuthalGap: -1°   stationPolarityCount: 110   misfitWeightCount: 29.1   misfit: 0.07   stationDistributionRatio: 0.44   meanDistP: 7.3   meanDistT: 7.3   qualityCode: A
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1782473683484.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):
Nodal Plane 1: strike: 53°   dip: 80°   rake: -180°
Nodal Plane 2: strike: 323°   dip: 90°   rake: -10°
Quality: azimuthalGap: -1°   stationPolarityCount: 36   misfitWeightCount: 11.0   misfit: 0.01   stationDistributionRatio: 0.48   meanDistP: 22.3   meanDistT: 27.2   qualityCode: B
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1782473683484.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 52°   dip: 83°   rake: -174°
Nodal Plane 2: strike: 321°   dip: 84°   rake: -7°
Quality: azimuthalGap: 37°   stationPolarityCount: 110   misfit: 0.16   stationDistributionRatio: 0.72   rmsAngDiffAccPref: 42.07   fracAcc30degPref: 0.39   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1782473683484.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1782473683484
Event info last updated: 2026.06.26-12:33:02 UTC
Event first association/location: 2026.06.26-11:38:03 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA