Early-est:     Kuril Islands    2025.08.01-01:28:34.13    q:C      mb:4.7*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     fmamp_polarity_waveform:     hash:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 4.7* [29]    Mwp: - [0]    Mwpd: - [0] Region: Kuril Islands Origin Time: 2025.08.01-01:28:34.13 UTC Hypocenter: lat: 50.96°  lon: 157.19°  [+/-21km]    depth: 55km  [+/-35km] Location Quality: qualityCode:  C     stdErr: 1.2s   assocPhases: 75   usedPhases: 36 minDist: 2.3°   maxDist: 149.7°   AzGap: 106°   2ndAzGap: 115°   atten: -0.77 [+/-0.32] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 21km   azMaxHorUnc: 103° 68%ConfEllipsoid:   semiMajorAxisLength: 35km   majorAxisAzimuth: 255°   majorAxisPlunge: 76°   semiIntermediateAxisLength: 26km   intermediateAxisAzimuth: 108°   intermediateAxisPlunge: 11°   semiMinorAxisLength: 20km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [9]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.8s [8] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~160km    North America / Pacific [subduction zone]: distance: ~660km    Okhotsk / North America [subduction zone]: distance: ~660km 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 (160km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        55km        55km        55km 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)

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 43°   dip: 3°   rake: 103° Nodal Plane 2: strike: 210°   dip: 87°   rake: 89° Quality: azimuthalGap: -1°   stationPolarityCount: 28   misfitWeightCount: 6.8   misfit: 0.16   stationDistributionRatio: 0.40   meanDistP: 46.4   meanDistT: 50.8   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
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
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 47°   dip: 55°   rake: -106° Nodal Plane 2: strike: 254°   dip: 38°   rake: -69° Quality: azimuthalGap: 136°   stationPolarityCount: 28   misfit: 0.29   stationDistributionRatio: 0.73   rmsAngDiffAccPref: 35.75   fracAcc30degPref: 0.65   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754011705416
Event info last updated: 2025.08.01-02:27:01 UTC
Event first association/location: 2025.08.01-01:35:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA