Early-est:     East Central Pacific Ocean    2026.08.10-05:41:47.34    q:B      mb:5.2    Mwp:5.6*    Mwpd:-    Td*T50Ex:0.8     fmamp_polarity:./hypo.1786340505297.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786340505297.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786340505297.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: 5.2 [57]    Mwp: 5.6* [19]    Mwpd: 5.6Xinv [17]
Region: East Central Pacific Ocean
Origin Time: 2026.08.10-05:41:47.34 UTC
Hypocenter: lat: 0.44°  lon: -114.59°  [+/-24km]    depth: 15km  [+/-21km]
Location Quality: qualityCode:  B     stdErr: 1.1s   assocPhases: 105   usedPhases: 64
minDist: 24.3°   maxDist: 153.1°   AzGap: 45°   2ndAzGap: 83°   atten: -0.23 [+/-0.46]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 15km   maxHorUnc: 24km   azMaxHorUnc: 78°
68%ConfEllipsoid:   semiMajorAxisLength: 30km   majorAxisAzimuth: 79°   majorAxisPlunge: 18°   semiIntermediateAxisLength: 20km   intermediateAxisAzimuth: 236°   intermediateAxisPlunge: 70°   semiMinorAxisLength: 18km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.3 [47]    Td: 3.2s [12]    Td*T50Ex: 0.8 [12]    To: 2.0s [45]
Closest plate boundaries:
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:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.8
   0.8
   0.8
Td*To:
     6.4
     6.4
     6.4
Mwp magnitude:
       5.6*
       5.6*
       5.6*
Hypocenter depth:
       15km
       15km
       15km
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.1786340505297.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 130°   dip: 74°   rake: 9°
Nodal Plane 2: strike: 38°   dip: 82°   rake: 164°
Quality: azimuthalGap: -1°   stationPolarityCount: 52   misfitWeightCount: 7.3   misfit: 0.06   stationDistributionRatio: 0.32   meanDistP: 50.3   meanDistT: 42.5   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786340505297.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 107°   dip: 16°   rake: -13°
Nodal Plane 2: strike: 210°   dip: 86°   rake: -106°
Quality: azimuthalGap: -1°   stationPolarityCount: 8   misfitWeightCount: 5.5   misfit: 0.00   stationDistributionRatio: 0.49   meanDistP: 40.6   meanDistT: 38.3   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1786340505297.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 98°   dip: 16°   rake: -36°
Nodal Plane 2: strike: 223°   dip: 81°   rake: -103°
Quality: azimuthalGap: 45°   stationPolarityCount: 52   misfit: 0.13   stationDistributionRatio: 0.74   rmsAngDiffAccPref: 33.49   fracAcc30degPref: 0.52   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786340505297.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786340505297
Event info last updated: 2026.08.10-06:40:01 UTC
Event first association/location: 2026.08.10-05:50:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA