Early-est:     Near Coast of Peru    2026.06.21-08:50:12.87    q:B      mb:4.6*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1782031812878.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1782031812878.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1782031812878.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: 4.6* [30]    Mwp: - [0]    Mwpd: - [0]
Region: Near Coast of Peru
Origin Time: 2026.06.21-08:50:12.87 UTC
Hypocenter: lat: -17.08°  lon: -70.67°  [+/-19km]    depth: 105km  [+/-25km]
Location Quality: qualityCode:  B     stdErr: 0.8s   assocPhases: 52   usedPhases: 32
minDist: 2.6°   maxDist: 92.2°   AzGap: 130°   2ndAzGap: 143°   atten: -0.85 [+/-0.31]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 19km   azMaxHorUnc: 58°
68%ConfEllipsoid:   semiMajorAxisLength: 30km   majorAxisAzimuth: 247°   majorAxisPlunge: 49°   semiIntermediateAxisLength: 20km   intermediateAxisAzimuth: 1°   intermediateAxisPlunge: 20°   semiMinorAxisLength: 18km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.5 [17]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.2s [17]
Closest plate boundaries:
   Nazca \ Altiplano [subduction zone]: distance: ~250km
Subduction geometry:    Zone: South America: DEBUG: error: [Errno 2] No such file or directory: 'gmt'    Slab depth at epicenter: error: evaluating slab depth: -999.9
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (250km)
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       105km
       105km
       105km
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.1782031812878.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 252°   dip: 18°   rake: 54°
Nodal Plane 2: strike: 109°   dip: 76°   rake: 100°
Quality: azimuthalGap: -1°   stationPolarityCount: 31   misfitWeightCount: 9.1   misfit: 0.06   stationDistributionRatio: 0.49   meanDistP: 46.9   meanDistT: 35.2   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1782031812878.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.1782031812878.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 288°   dip: 85°   rake: -159°
Nodal Plane 2: strike: 197°   dip: 69°   rake: -5°
Quality: azimuthalGap: 72°   stationPolarityCount: 31   misfit: 0.25   stationDistributionRatio: 0.74   rmsAngDiffAccPref: 28.56   fracAcc30degPref: 0.73   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1782031812878.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1782031812878
Event info last updated: 2026.06.21-09:49:01 UTC
Event first association/location: 2026.06.21-09:01:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA