Early-est:     Near Coast of Peru    2025.01.28-05:09:31.73    q:B      mb:4.9    Mwp:-    Mwpd:-    Td*T50Ex:0.4     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

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

Earthquake Details: Magnitude: mb: 4.9 [30]    Mwp: 5.0X [3]    Mwpd: 5.7Xinv [1] Region: Near Coast of Peru Origin Time: 2025.01.28-05:09:31.73 UTC Hypocenter: lat: -14.32°  lon: -76.37°  [+/-14km]    depth: 10km  [+/-14km] Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 66   usedPhases: 34 minDist: 2.4°   maxDist: 146.3°   AzGap: 100°   2ndAzGap: 137°   atten: -1.62 [+/-0.29] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 72° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 71°   majorAxisPlunge: 19°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 340°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [22]    Td: 0.9s [4]    Td*T50Ex: 0.4 [4]    To: 12.0s [17] Closest plate boundaries:    Nazca \ South America [subduction zone]: distance: ~70km    Altiplano - South America [continental rift boundary]: distance: ~140km    Nazca \ Altiplano [subduction zone]: distance: ~160km Subduction geometry:    Zone: South America    Slab depth at epicenter: 21km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (70km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    0.4    0.4    0.4 Td*To:      10.8      10.8      10.8 Mwp magnitude:        -        -        - Hypocenter depth:        10km        10km        10km Slab depth at epicenter:        21km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 50°   dip: 16°   rake: 152° Nodal Plane 2: strike: 167°   dip: 83°   rake: 76° Quality: azimuthalGap: -1°   stationPolarityCount: 32   misfitWeightCount: 9.4   misfit: 0.11   stationDistributionRatio: 0.29   meanDistP: 34.8   meanDistT: 33.9   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 17°   dip: 84°   rake: -146° Nodal Plane 2: strike: 282°   dip: 56°   rake: -8° Quality: azimuthalGap: 100°   stationPolarityCount: 32   misfit: 0.25   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 36.49   fracAcc30degPref: 0.63   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available) Nodal Plane 1: strike: 0°   dip: 0°   rake: nan° Nodal Plane 2: strike: nan°   dip: nan°   rake: nan° 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

Event ID: smi:KOERI/ee/event/1738040974093
Event info last updated: 2025.01.28-06:09:35 UTC
Event first association/location: 2025.01.28-05:16:01 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI