Early-est:     East of Kuril Islands    2025.08.03-13:25:25.22    q:A      mb:5.2*    Mwp:-    Mwpd:-    Td*T50Ex:1.4     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* [75]    Mwp: 5.8X [1]    Mwpd: 5.8Xinv [1] Region: East of Kuril Islands Origin Time: 2025.08.03-13:25:25.22 UTC Hypocenter: lat: 50.39°  lon: 159.07°  [+/-15km]    depth: 9km  [+/-14km] Location Quality: qualityCode:  A     stdErr: 1.5s   assocPhases: 118   usedPhases: 87 minDist: 2.6°   maxDist: 157.2°   AzGap: 89°   2ndAzGap: 97°   atten: -1.26 [+/-0.30] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 15km   azMaxHorUnc: 6° 68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 188°   majorAxisPlunge: 15°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 284°   intermediateAxisPlunge: 21°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.6 [60]    Td: 2.2s [10]    Td*T50Ex: 1.4 [10]    To: 33.1s [57] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~30km    North America / Pacific [subduction zone]: distance: ~630km    Okhotsk / North America [subduction zone]: distance: ~630km 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 (30km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    1.4    1.4    1.4 Td*To:      72.8      72.8      72.8 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: 30°   dip: 33°   rake: 49° Nodal Plane 2: strike: 256°   dip: 66°   rake: 113° Quality: azimuthalGap: -1°   stationPolarityCount: 77   misfitWeightCount: 9.2   misfit: 0.17   stationDistributionRatio: 0.26   meanDistP: 50.1   meanDistT: 51.1   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: 285°   dip: 85°   rake: -159° Nodal Plane 2: strike: 193°   dip: 69°   rake: -5° Quality: azimuthalGap: 124°   stationPolarityCount: 76   misfit: 0.36   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 37.82   fracAcc30degPref: 0.62   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1754227526164
Event info last updated: 2025.08.03-14:24:12 UTC
Event first association/location: 2025.08.03-13:32:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA