Early-est:     Off East Coast of Kamchatka    2025.08.04-21:59:51.08    q:A      mb:5.1*    Mwp:-    Mwpd:-    Td*T50Ex:0.4     fmamp_polarity:./hypo.1754344795083.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754344795083.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754344795083.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: 5.1* [58]    Mwp: - [0]    Mwpd: 6.0Xinv [1]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.04-21:59:51.08 UTC
Hypocenter: lat: 51.69°  lon: 159.14°  [+/-16km]    depth: 9km  [+/-14km]
Location Quality: qualityCode:  A     stdErr: 1.2s   assocPhases: 95   usedPhases: 65
minDist: 1.4°   maxDist: 85.1°   AzGap: 172°   2ndAzGap: 200°   atten: -1.18 [+/-0.31]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 16km   azMaxHorUnc: 134°
68%ConfEllipsoid:   semiMajorAxisLength: 20km   majorAxisAzimuth: 131°   majorAxisPlunge: 13°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 36°   intermediateAxisPlunge: 24°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [51]    Td: 1.0s [4]    Td*T50Ex: 0.4 [4]    To: 2.3s [45]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~100km
   North America / Pacific [subduction zone]: distance: ~510km
   Okhotsk / North America [subduction zone]: distance: ~510km
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 (100km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.4
   0.4
   0.4
Td*To:
     2.3
     2.3
     2.3
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       9km
       9km
       9km
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.1754344795083.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 115°   dip: 73°   rake: -3°
Nodal Plane 2: strike: 205°   dip: 87°   rake: -163°
Quality: azimuthalGap: -1°   stationPolarityCount: 57   misfitWeightCount: 7.2   misfit: 0.05   stationDistributionRatio: 0.33   meanDistP: 50.1   meanDistT: 51.2   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754344795083.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.1754344795083.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (No solution available)
Nodal Plane 1: strike: 999°   dip: 99°   rake: 999°
Nodal Plane 2: strike: 324°   dip: 13°   rake: 135°
Quality: azimuthalGap: 171°   stationPolarityCount: 56   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754344795083.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754344795083
Event info last updated: 2025.08.04-22:58:01 UTC
Event first association/location: 2025.08.04-22:06:03 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA