Early-est:     Kuril Islands    2025.08.05-13:18:41.48    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* [26]    Mwp: - [0]    Mwpd: - [0] Region: Kuril Islands Origin Time: 2025.08.05-13:18:41.48 UTC Hypocenter: lat: 50.76°  lon: 157.49°  [+/-25km]    depth: 68km  [+/-48km] Location Quality: qualityCode:  C     stdErr: 1.8s   assocPhases: 63   usedPhases: 31 minDist: 2.4°   maxDist: 149.5°   AzGap: 115°   2ndAzGap: 126°   atten: -1.46 [+/-0.29] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 20km   maxHorUnc: 25km   azMaxHorUnc: 2° 68%ConfEllipsoid:   semiMajorAxisLength: 48km   majorAxisAzimuth: 74°   majorAxisPlunge: 83°   semiIntermediateAxisLength: 31km   intermediateAxisAzimuth: 181°   intermediateAxisPlunge: 2°   semiMinorAxisLength: 25km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.3 [10]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.3s [8] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~130km    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 (130km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        68km        68km        68km 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: 69°   dip: 39°   rake: -103° Nodal Plane 2: strike: 266°   dip: 52°   rake: -80° Quality: azimuthalGap: -1°   stationPolarityCount: 29   misfitWeightCount: 8.3   misfit: 0.23   stationDistributionRatio: 0.48   meanDistP: 55.6   meanDistT: 55.7   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):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 104°   dip: 30°   rake: -26° Nodal Plane 2: strike: 217°   dip: 77°   rake: -117° Quality: azimuthalGap: 130°   stationPolarityCount: 29   misfit: 0.33   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 42.18   fracAcc30degPref: 0.48   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754399924969
Event info last updated: 2025.08.05-14:17:00 UTC
Event first association/location: 2025.08.05-13:30:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA