Early-est:     Philippine Islands Region    2024.12.19-16:51:22.23    q:B      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734627082451.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734627082451.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734627082451.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: 4.9* [15]    Mwp: 4.3X [1]    Mwpd: - [0]
Region: Philippine Islands Region
Origin Time: 2024.12.19-16:51:22.23 UTC
Hypocenter: lat: 5.60°  lon: 127.32°  [+/-20km]    depth: 47km  [+/-21km]
Location Quality: qualityCode:  B     stdErr: 1.6s   assocPhases: 35   usedPhases: 10
minDist: 2.3°   maxDist: 85.8°   AzGap: 165°   2ndAzGap: 179°   atten: -1.18 [+/-0.37]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 20km   azMaxHorUnc: 52°
68%ConfEllipsoid:   semiMajorAxisLength: 24km   majorAxisAzimuth: 51°   majorAxisPlunge: 1°   semiIntermediateAxisLength: 23km   intermediateAxisAzimuth: 320°   intermediateAxisPlunge: 59°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6 [10]    Td: 1.1Xs [1]    Td*T50Ex: - [0]    To: 3.1s [9]
Closest plate boundaries:
   Philippine Sea \ Sunda [subduction zone]: distance: ~20km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (20km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       47km
       47km
       47km
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.1734627082451.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 23°   dip: 39°   rake: 139°
Nodal Plane 2: strike: 147°   dip: 66°   rake: 59°
Quality: azimuthalGap: -1°   stationPolarityCount: 14   misfitWeightCount: 7.2   misfit: 0.09   stationDistributionRatio: 0.45   meanDistP: 46.0   meanDistT: 51.4   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734627082451.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.1734627082451.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 201°   dip: 65°   rake: 144°
Nodal Plane 2: strike: 307°   dip: 58°   rake: 30°
Quality: azimuthalGap: 145°   stationPolarityCount: 14   misfit: 0.45   stationDistributionRatio: 0.61   rmsAngDiffAccPref: 30.42   fracAcc30degPref: 0.81   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734627082451.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734627082451
Event info last updated: 2024.12.19-17:50:00 UTC
Event first association/location: 2024.12.19-16:57:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA