Early-est:     Mindanao, Philippines    2025.01.27-06:40:44.48    q:B      mb:4.5    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1737960044994.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1737960044994.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1737960044994.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1737960044994.mech.fmamp_amp_mwp.thumb.jpg

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

Earthquake Details:
Magnitude: mb: 4.5 [33]    Mwp: - [0]    Mwpd: - [0]
Region: Mindanao, Philippines
Origin Time: 2025.01.27-06:40:44.48 UTC
Hypocenter: lat: 7.40°  lon: 124.55°  [+/-15km]    depth: 402km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 1.0s   assocPhases: 57   usedPhases: 40
minDist: 1.1°   maxDist: 144.1°   AzGap: 109°   2ndAzGap: 117°   atten: -0.76 [+/-0.30]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 15km   azMaxHorUnc: 12°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 1°   majorAxisPlunge: 35°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 253°   intermediateAxisPlunge: 24°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.3 [13]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.3s [10]
Closest plate boundaries:
   Philippine Sea \ Sunda [subduction zone]: distance: ~300km
   Molucca Sea / Sunda [subduction zone]: distance: ~600km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (300km)
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       402km
       402km
       402km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1737960044994.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 194°   dip: 44°   rake: 69°
Nodal Plane 2: strike: 42°   dip: 49°   rake: 109°
Quality: azimuthalGap: -1°   stationPolarityCount: 36   misfitWeightCount: 12.3   misfit: 0.14   stationDistributionRatio: 0.52   meanDistP: 49.0   meanDistT: 24.6   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1737960044994.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 52°   dip: 44°   rake: 115°
Nodal Plane 2: strike: 199°   dip: 51°   rake: 68°
Quality: azimuthalGap: 117°   stationPolarityCount: 36   misfit: 0.32   stationDistributionRatio: 0.77   rmsAngDiffAccPref: 31.65   fracAcc30degPref: 0.76   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1737960044994.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (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/_amp_aref
./hypo.1737960044994.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (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/_amp_mwp
./hypo.1737960044994.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1737960044994
Event info last updated: 2025.01.27-07:40:49 UTC
Event first association/location: 2025.01.27-06:46:34 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI