Early-est:     Northern Colombia    2025.12.10-08:27:06.83    q:A      mb:5.3    Mwp:5.6    Mwpd:-    Td*T50Ex:0.7     fmamp_polarity:./hypo.1765355229979.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765355229979.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765355229979.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765355229979.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: 5.3 [114]    Mwp: 5.6 [13]    Mwpd: 5.8Xinv [2]
Region: Northern Colombia
Origin Time: 2025.12.10-08:27:06.83 UTC
Hypocenter: lat: 6.73°  lon: -73.04°  [+/-6km]    depth: 146km  [+/-7km]
Location Quality: qualityCode:  A     stdErr: 1.2s   assocPhases: 245   usedPhases: 162
minDist: 3.2°   maxDist: 169.4°   AzGap: 31°   2ndAzGap: 40°   atten: -1.62 [+/-0.14]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 6km   maxHorUnc: 6km   azMaxHorUnc: 42°
68%ConfEllipsoid:   semiMajorAxisLength: 8km   majorAxisAzimuth: 43°   majorAxisPlunge: 37°   semiIntermediateAxisLength: 7km   intermediateAxisAzimuth: 164°   intermediateAxisPlunge: 35°   semiMinorAxisLength: 7km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.5 [95]    Td: 1.4s [20]    Td*T50Ex: 0.7 [20]    To: 1.7s [78]
Closest plate boundaries:
   North Andes - South America [continental convergent boundary]: distance: ~110km
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:
 <1%
 <1%
 <1%
Td*T50Ex:
   0.7
   0.7
   0.7
Td*To:
     2.4
     2.4
     2.4
Mwp magnitude:
       5.6
       5.6
       5.6
Hypocenter depth:
       146km
       146km
       146km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1765355229979.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 75°   dip: 16°   rake: -145°
Nodal Plane 2: strike: 311°   dip: 81°   rake: -77°
Quality: azimuthalGap: -1°   stationPolarityCount: 141   misfitWeightCount: 33.7   misfit: 0.15   stationDistributionRatio: 0.62   meanDistP: 11.9   meanDistT: 11.8   qualityCode: A
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1765355229979.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 64°   dip: 22°   rake: -154°
Nodal Plane 2: strike: 310°   dip: 81°   rake: -70°
Quality: azimuthalGap: 31°   stationPolarityCount: 141   misfit: 0.28   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 33.24   fracAcc30degPref: 0.68   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765355229979.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):
Nodal Plane 1: strike: 44°   dip: 33°   rake: 161°
Nodal Plane 2: strike: 150°   dip: 80°   rake: 58°
Quality: azimuthalGap: -1°   stationPolarityCount: 17   misfitWeightCount: 10.2   misfit: 9999.90   stationDistributionRatio: 0.59   meanDistP: 28.5   meanDistT: 17.5   qualityCode: B
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_aref
./hypo.1765355229979.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 44°   dip: 29°   rake: 163°
Nodal Plane 2: strike: 148°   dip: 82°   rake: 62°
Quality: azimuthalGap: -1°   stationPolarityCount: 11   misfitWeightCount: 5.6   misfit: 9999.90   stationDistributionRatio: 0.71   meanDistP: 26.0   meanDistT: 28.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_mwp
./hypo.1765355229979.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765355229979
Event info last updated: 2025.12.10-09:27:25 UTC
Event first association/location: 2025.12.10-08:31:04 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI