Early-est:     East of Kuril Islands    2025.08.03-00:10:01.10    q:B      mb:4.9*    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: 4.9* [47]    Mwp: - [0]    Mwpd: - [0] Region: East of Kuril Islands Origin Time: 2025.08.03-00:10:01.10 UTC Hypocenter: lat: 50.45°  lon: 158.28°  [+/-24km]    depth: 9km  [+/-37km] Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 94   usedPhases: 63 minDist: 2.6°   maxDist: 149.1°   AzGap: 106°   2ndAzGap: 114°   atten: -0.91 [+/-0.35] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 21km   maxHorUnc: 24km   azMaxHorUnc: 40° 68%ConfEllipsoid:   semiMajorAxisLength: 38km   majorAxisAzimuth: 311°   majorAxisPlunge: 74°   semiIntermediateAxisLength: 30km   intermediateAxisAzimuth: 220°   intermediateAxisPlunge: 0°   semiMinorAxisLength: 24km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [36]    Td: 1.2Xs [1]    Td*T50Ex: - [0]    To: 15.7s [32] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~70km    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 (70km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - 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)

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 32°   dip: 34°   rake: -28° Nodal Plane 2: strike: 146°   dip: 75°   rake: -121° Quality: azimuthalGap: -1°   stationPolarityCount: 49   misfitWeightCount: 5.3   misfit: 0.15   stationDistributionRatio: 0.47   meanDistP: 44.5   meanDistT: 51.7   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): Nodal Plane 1: strike: 325°   dip: 84°   rake: -167° Nodal Plane 2: strike: 234°   dip: 77°   rake: -6° Quality: azimuthalGap: 137°   stationPolarityCount: 49   misfit: 0.47   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 17.28   fracAcc30degPref: 1.00   qualityCode: B Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754179799584
Event info last updated: 2025.08.03-01:09:01 UTC
Event first association/location: 2025.08.03-00:18:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA