Early-est:     Off East Coast of Kamchatka    2025.08.05-01:47:37.70    q:A      mb:5.2*    Mwp:-    Mwpd:-    Td*T50Ex:0.4     fmamp_polarity:./hypo.1754358457171.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754358457171.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754358457171.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: 5.2* [90]    Mwp: 4.9X [1]    Mwpd: 6.0Xinv [1]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.05-01:47:37.70 UTC
Hypocenter: lat: 52.33°  lon: 160.04°  [+/-13km]    depth: 12km  [+/-13km]
Location Quality: qualityCode:  A     stdErr: 1.6s   assocPhases: 150   usedPhases: 109
minDist: 1.1°   maxDist: 147.7°   AzGap: 109°   2ndAzGap: 117°   atten: -0.83 [+/-0.27]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 13km   azMaxHorUnc: 145°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 319°   majorAxisPlunge: 30°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 215°   intermediateAxisPlunge: 22°   semiMinorAxisLength: 12km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [80]    Td: 1.1s [4]    Td*T50Ex: 0.4 [4]    To: 2.8s [78]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~60km
   North America / Pacific [subduction zone]: distance: ~410km
   Okhotsk / North America [subduction zone]: distance: ~410km
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 (60km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.4
   0.4
   0.4
Td*To:
     3.1
     3.1
     3.1
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       12km
       12km
       12km
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.1754358457171.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 116°   dip: 63°   rake: -1°
Nodal Plane 2: strike: 207°   dip: 89°   rake: -153°
Quality: azimuthalGap: -1°   stationPolarityCount: 93   misfitWeightCount: 11.2   misfit: 0.08   stationDistributionRatio: 0.38   meanDistP: 43.6   meanDistT: 33.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754358457171.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.1754358457171.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 201°   dip: 85°   rake: -143°
Nodal Plane 2: strike: 107°   dip: 53°   rake: -6°
Quality: azimuthalGap: 128°   stationPolarityCount: 93   misfit: 0.27   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 38.27   fracAcc30degPref: 0.57   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754358457171.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754358457171
Event info last updated: 2025.08.05-02:46:01 UTC
Event first association/location: 2025.08.05-01:53:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA