Early-est:     East of Kuril Islands    2025.08.01-16:37:00.04    q:B      mb:5.2*    Mwp:-    Mwpd:-    Td*T50Ex:0.6     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: 5.2* [83]    Mwp: - [0]    Mwpd: - [0] Region: East of Kuril Islands Origin Time: 2025.08.01-16:37:00.04 UTC Hypocenter: lat: 50.87°  lon: 158.41°  [+/-27km]    depth: 30km  [+/-30km] Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 126   usedPhases: 91 minDist: 2.2°   maxDist: 148.9°   AzGap: 80°   2ndAzGap: 95°   atten: -1.16 [+/-0.22] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 15km   maxHorUnc: 27km   azMaxHorUnc: 154° 68%ConfEllipsoid:   semiMajorAxisLength: 34km   majorAxisAzimuth: 334°   majorAxisPlunge: 31°   semiIntermediateAxisLength: 28km   intermediateAxisAzimuth: 157°   intermediateAxisPlunge: 59°   semiMinorAxisLength: 19km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.3 [62]    Td: 1.8s [8]    Td*T50Ex: 0.6 [8]    To: 2.4s [60] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~100km    North America / Pacific [subduction zone]: distance: ~610km    Okhotsk / North America [subduction zone]: distance: ~610km 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:    0.6    0.6    0.6 Td*To:      4.3      4.3      4.3 Mwp magnitude:        -        -        - Hypocenter depth:        30km        30km        30km 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: 148°   dip: 64°   rake: 170° Nodal Plane 2: strike: 242°   dip: 81°   rake: 26° Quality: azimuthalGap: -1°   stationPolarityCount: 71   misfitWeightCount: 10.5   misfit: 0.20   stationDistributionRatio: 0.36   meanDistP: 51.5   meanDistT: 52.6   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: 71°   dip: 20°   rake: -64° Nodal Plane 2: strike: 224°   dip: 72°   rake: -99° Quality: azimuthalGap: 104°   stationPolarityCount: 71   misfit: 0.34   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 24.21   fracAcc30degPref: 0.73   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754066223625
Event info last updated: 2025.08.01-17:35:02 UTC
Event first association/location: 2025.08.01-16:44:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA