Early-est:     Philippine Islands Region    2024.12.19-19:22:27.27    q:B      mb:5.1*    Mwp:5.2    Mwpd:-    Td*T50Ex:0.7     fmamp_polarity:./hypo.1734636146035.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734636146035.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734636146035.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: 5.1* [58]    Mwp: 5.2 [5]    Mwpd: 5.4Xinv [4]
Region: Philippine Islands Region
Origin Time: 2024.12.19-19:22:27.27 UTC
Hypocenter: lat: 11.83°  lon: 126.78°  [+/-20km]    depth: 65km  [+/-41km]
Location Quality: qualityCode:  B     stdErr: 1.2s   assocPhases: 96   usedPhases: 79
minDist: 11.1°   maxDist: 169.8°   AzGap: 37°   2ndAzGap: 71°   atten: -0.88 [+/-0.24]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 20km   azMaxHorUnc: 82°
68%ConfEllipsoid:   semiMajorAxisLength: 41km   majorAxisAzimuth: 52°   majorAxisPlunge: 83°   semiIntermediateAxisLength: 24km   intermediateAxisAzimuth: 264°   intermediateAxisPlunge: 5°   semiMinorAxisLength: 20km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [42]    Td: 1.5s [6]    Td*T50Ex: 0.7 [6]    To: 3.7s [37]
Closest plate boundaries:
   Philippine Sea \ Sunda [subduction zone]: distance: ~60km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (60km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.7
   0.7
   0.7
Td*To:
     5.6
     5.6
     5.6
Mwp magnitude:
       5.2
       5.2
       5.2
Hypocenter depth:
       65km
       65km
       65km
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.1734636146035.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 155°   dip: 41°   rake: 16°
Nodal Plane 2: strike: 53°   dip: 80°   rake: 130°
Quality: azimuthalGap: -1°   stationPolarityCount: 60   misfitWeightCount: 14.2   misfit: 0.20   stationDistributionRatio: 0.49   meanDistP: 35.2   meanDistT: 47.2   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734636146035.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.1734636146035.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 94°   dip: 84°   rake: 160°
Nodal Plane 2: strike: 186°   dip: 70°   rake: 6°
Quality: azimuthalGap: 86°   stationPolarityCount: 60   misfit: 0.30   stationDistributionRatio: 0.81   rmsAngDiffAccPref: 19.30   fracAcc30degPref: 0.98   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734636146035.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734636146035
Event info last updated: 2024.12.19-20:21:00 UTC
Event first association/location: 2024.12.19-19:28:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA