Early-est:     Off East Coast of Kamchatka    2025.08.01-08:34:27.90    q:A      mb:5.3    Mwp:5.8*    Mwpd:-    Td*T50Ex:1.2     fmamp_polarity:./hypo.1754037269910.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754037269910.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754037269910.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: 5.3 [132]    Mwp: 5.8* [31]    Mwpd: 5.9Xinv [30]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.01-08:34:27.90 UTC
Hypocenter: lat: 52.70°  lon: 160.00°  [+/-15km]    depth: 30km  [+/-22km]
Location Quality: qualityCode:  A     stdErr: 1.4s   assocPhases: 216   usedPhases: 128
minDist: 0.9°   maxDist: 159.6°   AzGap: 75°   2ndAzGap: 89°   atten: -0.90 [+/-0.26]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 15km   azMaxHorUnc: 180°
68%ConfEllipsoid:   semiMajorAxisLength: 22km   majorAxisAzimuth: 336°   majorAxisPlunge: 74°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 185°   intermediateAxisPlunge: 14°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [113]    Td: 2.6s [18]    Td*T50Ex: 1.2 [18]    To: 18.6s [104]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~90km
   North America / Pacific [subduction zone]: distance: ~390km
   Okhotsk / North America [subduction zone]: distance: ~390km
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 (90km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   1.2
   1.2
   1.2
Td*To:
     48.4
     48.4
     48.4
Mwp magnitude:
       5.8*
       5.8*
       5.8*
Hypocenter depth:
       30km
       30km
       30km
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.1754037269910.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 199°   dip: 42°   rake: 71°
Nodal Plane 2: strike: 43°   dip: 50°   rake: 106°
Quality: azimuthalGap: -1°   stationPolarityCount: 108   misfitWeightCount: 14.8   misfit: 0.10   stationDistributionRatio: 0.40   meanDistP: 38.7   meanDistT: 30.6   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754037269910.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.1754037269910.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 232°   dip: 35°   rake: 85°
Nodal Plane 2: strike: 58°   dip: 55°   rake: 94°
Quality: azimuthalGap: 101°   stationPolarityCount: 108   misfit: 0.13   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 34.79   fracAcc30degPref: 0.62   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754037269910.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754037269910
Event info last updated: 2025.08.01-09:33:02 UTC
Event first association/location: 2025.08.01-08:41:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA