Early-est:     Off East Coast of Kamchatka    2025.11.12-03:09:45.68    q:B      mb:4.8    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: 4.8 [26]    Mwp: - [0]    Mwpd: - [0] Region: Off East Coast of Kamchatka Origin Time: 2025.11.12-03:09:45.68 UTC Hypocenter: lat: 52.05°  lon: 159.94°  [+/-12km]    depth: 33km  [+/-32km] Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 60   usedPhases: 31 minDist: 16.3°   maxDist: 139.8°   AzGap: 128°   2ndAzGap: 147°   atten: -1.08 [+/-0.45] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 10km   maxHorUnc: 12km   azMaxHorUnc: 59° 68%ConfEllipsoid:   semiMajorAxisLength: 32km   majorAxisAzimuth: 58°   majorAxisPlunge: 86°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 239°   intermediateAxisPlunge: 4°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [19]    Td: -s [0]    Td*T50Ex: - [0]    To: 21.6s [16] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~70km    North America / Pacific [subduction zone]: distance: ~440km    Okhotsk / North America [subduction zone]: distance: ~440km Subduction geometry:    Zone: Kamchatka/Kurils/Japan    Slab depth at epicenter: 25km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (70km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        33km        33km        33km Slab depth at epicenter:        25km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 87°   dip: 21°   rake: -127° Nodal Plane 2: strike: 306°   dip: 73°   rake: -77° Quality: azimuthalGap: -1°   stationPolarityCount: 31   misfitWeightCount: 7.2   misfit: 0.06   stationDistributionRatio: 0.50   meanDistP: 30.5   meanDistT: 36.8   qualityCode: C 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: 224°   dip: 39°   rake: -43° Nodal Plane 2: strike: 350°   dip: 65°   rake: -121° Quality: azimuthalGap: 127°   stationPolarityCount: 31   misfit: 0.31   stationDistributionRatio: 0.70   rmsAngDiffAccPref: 43.42   fracAcc30degPref: 0.52   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/1762916985148
Event info last updated: 2025.11.12-04:09:21 UTC
Event first association/location: 2025.11.12-03:21:54 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI