Early-est:     Near East Coast of Kamchatka    2025.07.31-18:10:17.83    q:B      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* [36]    Mwp: - [0]    Mwpd: - [0] Region: Near East Coast of Kamchatka Origin Time: 2025.07.31-18:10:17.83 UTC Hypocenter: lat: 52.47°  lon: 158.99°  [+/-18km]    depth: 15km  [+/-25km] Location Quality: qualityCode:  B     stdErr: 2.5s   assocPhases: 83   usedPhases: 43 minDist: 11.8°   maxDist: 84.6°   AzGap: 162°   2ndAzGap: 186°   atten: -0.74 [+/-0.32] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 18km   azMaxHorUnc: 126° 68%ConfEllipsoid:   semiMajorAxisLength: 28km   majorAxisAzimuth: 296°   majorAxisPlunge: 52°   semiIntermediateAxisLength: 19km   intermediateAxisAzimuth: 158°   intermediateAxisPlunge: 30°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [27]    Td: -s [0]    Td*T50Ex: - [0]    To: 11.5s [22] Closest plate boundaries:    Okhotsk / Pacific [subduction zone]: distance: ~140km    North America / Pacific [subduction zone]: distance: ~450km    Okhotsk / North America [subduction zone]: distance: ~450km 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 (140km)  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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 145°   dip: 42°   rake: -34° Nodal Plane 2: strike: 261°   dip: 68°   rake: -127° Quality: azimuthalGap: -1°   stationPolarityCount: 37   misfitWeightCount: 7.1   misfit: 0.10   stationDistributionRatio: 0.32   meanDistP: 50.9   meanDistT: 46.0   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: 185°   stationPolarityCount: 37   misfit: 0.99   stationDistributionRatio: 0.72   rmsAngDiffAccPref: 46.64   fracAcc30degPref: 0.00   qualityCode: E Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1753985417670
Event info last updated: 2025.07.31-19:09:01 UTC
Event first association/location: 2025.07.31-18:17:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA