Early-est:     Off East Coast of Kamchatka    2025.08.04-17:49:41.81    q:B      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754329782386.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754329782386.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754329782386.mech.hash.thumb.jpg

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

Earthquake Details:
Magnitude: mb: 4.9* [62]    Mwp: 4.4X [1]    Mwpd: - [0]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.04-17:49:41.81 UTC
Hypocenter: lat: 51.74°  lon: 159.44°  [+/-27km]    depth: 59km  [+/-37km]
Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 99   usedPhases: 74
minDist: 1.4°   maxDist: 148.2°   AzGap: 93°   2ndAzGap: 101°   atten: -0.90 [+/-0.28]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 21km   maxHorUnc: 27km   azMaxHorUnc: 130°
68%ConfEllipsoid:   semiMajorAxisLength: 41km   majorAxisAzimuth: 306°   majorAxisPlunge: 54°   semiIntermediateAxisLength: 28km   intermediateAxisAzimuth: 143°   intermediateAxisPlunge: 34°   semiMinorAxisLength: 26km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [45]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.9s [40]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~80km
   North America / Pacific [subduction zone]: distance: ~490km
   Okhotsk / North America [subduction zone]: distance: ~490km
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 (80km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       59km
       59km
       59km
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)
./hypo.1754329782386.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 164°   dip: 35°   rake: -32°
Nodal Plane 2: strike: 280°   dip: 72°   rake: -121°
Quality: azimuthalGap: -1°   stationPolarityCount: 59   misfitWeightCount: 12.4   misfit: 0.13   stationDistributionRatio: 0.44   meanDistP: 34.7   meanDistT: 34.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754329782386.mech.fmamp_polarity.mechanism.jpg
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
./hypo.1754329782386.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 148°   dip: 29°   rake: -58°
Nodal Plane 2: strike: 292°   dip: 66°   rake: -106°
Quality: azimuthalGap: 124°   stationPolarityCount: 60   misfit: 0.31   stationDistributionRatio: 0.72   rmsAngDiffAccPref: 17.46   fracAcc30degPref: 0.92   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754329782386.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754329782386
Event info last updated: 2025.08.04-18:48:00 UTC
Event first association/location: 2025.08.04-17:56:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA