Early-est:     East of Kuril Islands    2026.02.06-16:20:13.58    q:C      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* [29]    Mwp: - [0]    Mwpd: - [0] Region: East of Kuril Islands Origin Time: 2026.02.06-16:20:13.58 UTC Hypocenter: lat: 50.76°  lon: 160.00°  [+/-32km]    depth: 15km  [+/-32km] Location Quality: qualityCode:  C     stdErr: 2.5s   assocPhases: 56   usedPhases: 37 minDist: 2.4°   maxDist: 78.0°   AzGap: 88°   2ndAzGap: 123°   atten: -1.85 [+/-0.42] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 26km   maxHorUnc: 32km   azMaxHorUnc: 178° 68%ConfEllipsoid:   semiMajorAxisLength: 40km   majorAxisAzimuth: 358°   majorAxisPlunge: 3°   semiIntermediateAxisLength: 32km   intermediateAxisAzimuth: 92°   intermediateAxisPlunge: 54°   semiMinorAxisLength: 31km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [20]    Td: 1.2Xs [2]    Td*T50Ex: - [0]    To: 3.1s [20] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~10km    North America / Pacific [subduction zone]: distance: ~560km    Okhotsk / North America [subduction zone]: distance: ~560km 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 (10km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        15km        15km        15km 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: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 216°   dip: 57°   rake: 37° Nodal Plane 2: strike: 104°   dip: 59°   rake: 141° Quality: azimuthalGap: -1°   stationPolarityCount: 34   misfitWeightCount: 9.0   misfit: 0.14   stationDistributionRatio: 0.50   meanDistP: 50.6   meanDistT: 39.8   qualityCode: C 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: 113°   dip: 67°   rake: 141° Nodal Plane 2: strike: 221°   dip: 55°   rake: 29° Quality: azimuthalGap: 88°   stationPolarityCount: 34   misfit: 0.19   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 15.34   fracAcc30degPref: 0.96   qualityCode: B Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1770394815419
Event info last updated: 2026.02.06-17:18:25 UTC
Event first association/location: 2026.02.06-16:27:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA