Early-est:     Off East Coast of Kamchatka    2025.08.02-14:14:05.82    q:A      mb:5.4    Mwp:6.1*    Mwpd:-    Td*T50Ex:1.9     fmamp_polarity:./hypo.1754144044072.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754144044072.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754144044072.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: 5.4 [143]    Mwp: 6.1* [111]    Mwpd: 6.3Xinv [108]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.02-14:14:05.82 UTC
Hypocenter: lat: 51.63°  lon: 159.52°  [+/-14km]    depth: 12km  [+/-13km]
Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 259   usedPhases: 160
minDist: 1.5°   maxDist: 158.5°   AzGap: 63°   2ndAzGap: 86°   atten: -0.55 [+/-0.20]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 14km   azMaxHorUnc: 98°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 281°   majorAxisPlunge: 18°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 16°   intermediateAxisPlunge: 14°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [134]    Td: 4.0s [22]    Td*T50Ex: 1.9 [22]    To: 13.6s [131]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~80km
   North America / Pacific [subduction zone]: distance: ~500km
   Okhotsk / North America [subduction zone]: distance: ~500km
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 (80km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   1.9
   1.9
   1.9
Td*To:
     54.4
     54.4
     54.4
Mwp magnitude:
       6.1*
       6.1*
       6.1*
Hypocenter depth:
       12km
       12km
       12km
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.1754144044072.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 162°   dip: 34°   rake: 69°
Nodal Plane 2: strike: 7°   dip: 59°   rake: 104°
Quality: azimuthalGap: -1°   stationPolarityCount: 140   misfitWeightCount: 19.5   misfit: 0.08   stationDistributionRatio: 0.56   meanDistP: 42.3   meanDistT: 24.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754144044072.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 5°   dip: 46°   rake: 116°
Nodal Plane 2: strike: 150°   dip: 50°   rake: 65°
Quality: azimuthalGap: -1°   stationPolarityCount: 42   misfitWeightCount: 6.6   misfit: 0.03   stationDistributionRatio: 0.68   meanDistP: 49.3   meanDistT: 37.2   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1754144044072.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 212°   dip: 29°   rake: 74°
Nodal Plane 2: strike: 50°   dip: 62°   rake: 99°
Quality: azimuthalGap: 77°   stationPolarityCount: 140   misfit: 0.11   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 38.58   fracAcc30degPref: 0.49   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754144044072.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754144044072
Event info last updated: 2025.08.02-15:13:02 UTC
Event first association/location: 2025.08.02-14:19:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA