Early-est:     Philippine Islands Region    2024.12.19-01:09:51.90    q:B      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734570592681.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734570592681.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734570592681.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* [31]    Mwp: - [0]    Mwpd: - [0]
Region: Philippine Islands Region
Origin Time: 2024.12.19-01:09:51.90 UTC
Hypocenter: lat: 17.51°  lon: 119.64°  [+/-12km]    depth: 2km  [+/-15km]
Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 52   usedPhases: 33
minDist: 9.4°   maxDist: 166.3°   AzGap: 107°   2ndAzGap: 110°   atten: -1.16 [+/-0.31]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 12km   azMaxHorUnc: 94°
68%ConfEllipsoid:   semiMajorAxisLength: 16km   majorAxisAzimuth: 141°   majorAxisPlunge: 44°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 240°   intermediateAxisPlunge: 10°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.3 [20]    Td: 2.6Xs [1]    Td*T50Ex: - [0]    To: 12.6s [15]
Closest plate boundaries:
   Philippine Sea / Sunda [subduction zone]: distance: ~50km
   Philippine Sea - Sunda [continental transform fault]: distance: ~110km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (50km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       2km
       2km
       2km
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.1734570592681.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 207°   dip: 73°   rake: 10°
Nodal Plane 2: strike: 114°   dip: 80°   rake: 162°
Quality: azimuthalGap: -1°   stationPolarityCount: 27   misfitWeightCount: 5.1   misfit: 0.08   stationDistributionRatio: 0.20   meanDistP: 56.5   meanDistT: 55.4   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734570592681.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.1734570592681.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 137°   dip: 57°   rake: 158°
Nodal Plane 2: strike: 240°   dip: 72°   rake: 36°
Quality: azimuthalGap: 107°   stationPolarityCount: 27   misfit: 0.32   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 47.72   fracAcc30degPref: 0.37   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734570592681.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734570592681
Event info last updated: 2024.12.19-02:08:00 UTC
Event first association/location: 2024.12.19-01:27:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA