Early-est:     Off East Coast of Kamchatka    2026.10.02-16:34:41.00    q:A      mb:5.6    Mwp:6.0*    Mwpd:-    Td*T50Ex:0.7     fmamp_polarity:./hypo.1790958885668.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1790958885668.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1790958885668.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: 5.6 [139]    Mwp: 6.0* [78]    Mwpd: 6.1Xinv [85]
Region: Off East Coast of Kamchatka
Origin Time: 2026.10.02-16:34:41.00 UTC
Hypocenter: lat: 51.60°  lon: 159.82°  [+/-19km]    depth: 15km  [+/-34km]
Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 213   usedPhases: 173
minDist: 9.5°   maxDist: 154.1°   AzGap: 24°   2ndAzGap: 46°   atten: -1.06 [+/-0.26]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 19km   azMaxHorUnc: 136°
68%ConfEllipsoid:   semiMajorAxisLength: 34km   majorAxisAzimuth: 270°   majorAxisPlunge: 81°   semiIntermediateAxisLength: 23km   intermediateAxisAzimuth: 139°   intermediateAxisPlunge: 6°   semiMinorAxisLength: 17km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [147]    Td: 1.7s [17]    Td*T50Ex: 0.7 [17]    To: 7.6s [146]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~60km
   North America / Pacific [subduction zone]: distance: ~490km
   Okhotsk / North America [subduction zone]: distance: ~490km
Subduction geometry:    Zone: Kamchatka/Kurils/Japan: 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 (60km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.7
   0.7
   0.7
Td*To:
     12.9
     12.9
     12.9
Mwp magnitude:
       6.0*
       6.0*
       6.0*
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.1790958885668.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 158°   dip: 24°   rake: 55°
Nodal Plane 2: strike: 16°   dip: 70°   rake: 105°
Quality: azimuthalGap: -1°   stationPolarityCount: 140   misfitWeightCount: 16.2   misfit: 0.05   stationDistributionRatio: 0.69   meanDistP: 39.2   meanDistT: 25.5   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1790958885668.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 181°   dip: 36°   rake: 64°
Nodal Plane 2: strike: 32°   dip: 58°   rake: 108°
Quality: azimuthalGap: -1°   stationPolarityCount: 24   misfitWeightCount: 5.8   misfit: 0.01   stationDistributionRatio: 0.69   meanDistP: 49.0   meanDistT: 36.1   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1790958885668.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 227°   dip: 36°   rake: 95°
Nodal Plane 2: strike: 41°   dip: 54°   rake: 86°
Quality: azimuthalGap: 46°   stationPolarityCount: 140   misfit: 0.09   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 40.28   fracAcc30degPref: 0.44   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1790958885668.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1790958885668
Event info last updated: 2026.10.02-17:33:04 UTC
Event first association/location: 2026.10.02-16:41:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA