Early-est:     Kuril Islands    2025.08.02-08:33:58.69    q:C      mb:4.6*    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: 4.6* [20]    Mwp: - [0]    Mwpd: - [0] Region: Kuril Islands Origin Time: 2025.08.02-08:33:58.69 UTC Hypocenter: lat: 49.27°  lon: 155.58°  [+/-21km]    depth: 59km  [+/-40km] Location Quality: qualityCode:  C     stdErr: 1.9s   assocPhases: 56   usedPhases: 23 minDist: 4.2°   maxDist: 146.8°   AzGap: 85°   2ndAzGap: 113°   atten: -1.25 [+/-0.20] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 21km   azMaxHorUnc: 144° 68%ConfEllipsoid:   semiMajorAxisLength: 40km   majorAxisAzimuth: 247°   majorAxisPlunge: 79°   semiIntermediateAxisLength: 26km   intermediateAxisAzimuth: 146°   intermediateAxisPlunge: 2°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [11]    Td: 4.7Xs [1]    Td*T50Ex: - [0]    To: 14.4s [8] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~130km    North America / Pacific [subduction zone]: distance: ~880km    Okhotsk / North America [subduction zone]: distance: ~880km 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 (130km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        59km        59km        59km 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: 231°   dip: 36°   rake: 2° Nodal Plane 2: strike: 139°   dip: 89°   rake: 125° Quality: azimuthalGap: -1°   stationPolarityCount: 18   misfitWeightCount: 6.5   misfit: 0.08   stationDistributionRatio: 0.59   meanDistP: 49.8   meanDistT: 50.4   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: 296°   dip: 86°   rake: -142° Nodal Plane 2: strike: 203°   dip: 53°   rake: -5° Quality: azimuthalGap: 140°   stationPolarityCount: 18   misfit: 0.26   stationDistributionRatio: 0.70   rmsAngDiffAccPref: 29.38   fracAcc30degPref: 0.88   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754123639411
Event info last updated: 2025.08.02-09:32:00 UTC
Event first association/location: 2025.08.02-08:42:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA