Early-est:     Kuril Islands    2025.08.07-02:53:05.95    q:C      mb:4.8*    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: 4.8* [26]    Mwp: - [0]    Mwpd: - [0] Region: Kuril Islands Origin Time: 2025.08.07-02:53:05.95 UTC Hypocenter: lat: 49.30°  lon: 156.14°  [+/-26km]    depth: 49km  [+/-29km] Location Quality: qualityCode:  C     stdErr: 1.6s   assocPhases: 50   usedPhases: 29 minDist: 4.0°   maxDist: 165.2°   AzGap: 210°   2ndAzGap: 227°   atten: -1.09 [+/-0.20] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 26km   azMaxHorUnc: 110° 68%ConfEllipsoid:   semiMajorAxisLength: 33km   majorAxisAzimuth: 105°   majorAxisPlunge: 24°   semiIntermediateAxisLength: 28km   intermediateAxisAzimuth: 324°   intermediateAxisPlunge: 60°   semiMinorAxisLength: 18km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.3 [10]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.6s [10] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~100km    North America / Pacific [subduction zone]: distance: ~850km    Okhotsk / North America [subduction zone]: distance: ~850km 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:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        49km        49km        49km 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: 256°   dip: 46°   rake: 48° Nodal Plane 2: strike: 128°   dip: 57°   rake: 125° Quality: azimuthalGap: -1°   stationPolarityCount: 21   misfitWeightCount: 3.3   misfit: 0.08   stationDistributionRatio: 0.54   meanDistP: 54.0   meanDistT: 50.3   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):    (No solution available) Nodal Plane 1: strike: 999°   dip: 99°   rake: 999° Nodal Plane 2: strike: 324°   dip: 13°   rake: 135° Quality: azimuthalGap: 214°   stationPolarityCount: 21   misfit: 0.99   stationDistributionRatio: 0.61   rmsAngDiffAccPref: 40.11   fracAcc30degPref: 0.00   qualityCode: E Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754535185093
Event info last updated: 2025.08.07-03:52:01 UTC
Event first association/location: 2025.08.07-03:06:08 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA