Early-est:     Off East Coast of Kamchatka    2025.11.09-11:13:48.21    q:B      mb:5.3    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 5.3 [145]    Mwp: 6.3X [1]    Mwpd: 6.3Xinv [1] Region: Off East Coast of Kamchatka Origin Time: 2025.11.09-11:13:48.21 UTC Hypocenter: lat: 51.56°  lon: 159.51°  [+/-12km]    depth: 7km  [+/-14km] Location Quality: qualityCode:  B     stdErr: 1.0s   assocPhases: 194   usedPhases: 170 minDist: 9.4°   maxDist: 153.2°   AzGap: 81°   2ndAzGap: 99°   atten: -0.15 [+/-0.27] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 12km   azMaxHorUnc: 145° 68%ConfEllipsoid:   semiMajorAxisLength: 16km   majorAxisAzimuth: 321°   majorAxisPlunge: 31°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 226°   intermediateAxisPlunge: 8°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [128]    Td: 1.7Xs [2]    Td*T50Ex: - [0]    To: 2.6s [121] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~80km    North America / Pacific [subduction zone]: distance: ~510km    Okhotsk / North America [subduction zone]: distance: ~510km Subduction geometry:    Zone: Kamchatka/Kurils/Japan    Slab depth at epicenter: 23km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (80km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        7km        7km        7km Slab depth at epicenter:        23km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 0°   dip: 86°   rake: 178° Nodal Plane 2: strike: 90°   dip: 88°   rake: 4° Quality: azimuthalGap: -1°   stationPolarityCount: 143   misfitWeightCount: 15.1   misfit: 0.20   stationDistributionRatio: 0.30   meanDistP: 54.7   meanDistT: 32.7   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 201°   dip: 12°   rake: 14° Nodal Plane 2: strike: 97°   dip: 87°   rake: 102° Quality: azimuthalGap: 81°   stationPolarityCount: 143   misfit: 0.28   stationDistributionRatio: 0.62   rmsAngDiffAccPref: 40.73   fracAcc30degPref: 0.49   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (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/_amp_aref
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (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/_amp_mwp

Event ID: smi:KOERI/ee/event/1762686830029
Event info last updated: 2025.11.09-12:14:35 UTC
Event first association/location: 2025.11.09-11:21:09 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI