Early-est:     Off East Coast of Kamchatka    2025.08.01-01:36:39.93    q:B      mb:5.2    Mwp:5.8*    Mwpd:-    Td*T50Ex:1.3     fmamp_polarity:./hypo.1754012201998.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754012201998.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754012201998.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 [96]    Mwp: 5.8* [24]    Mwpd: 6.0Xinv [18]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.01-01:36:39.93 UTC
Hypocenter: lat: 52.98°  lon: 161.13°  [+/-28km]    depth: 5km  [+/-44km]
Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 140   usedPhases: 87
minDist: 1.5°   maxDist: 160.0°   AzGap: 112°   2ndAzGap: 150°   atten: -0.91 [+/-0.28]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 21km   maxHorUnc: 28km   azMaxHorUnc: 142°
68%ConfEllipsoid:   semiMajorAxisLength: 45km   majorAxisAzimuth: 207°   majorAxisPlunge: 73°   semiIntermediateAxisLength: 35km   intermediateAxisAzimuth: 318°   intermediateAxisPlunge: 6°   semiMinorAxisLength: 24km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6 [79]    Td: 2.4s [14]    Td*T50Ex: 1.3 [14]    To: 30.9s [75]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~50km
   North America / Pacific [subduction zone]: distance: ~310km
   Okhotsk / North America [subduction zone]: distance: ~310km
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 (50km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   1.3
   1.3
   1.3
Td*To:
     74.2
     74.2
     74.2
Mwp magnitude:
       5.8*
       5.8*
       5.8*
Hypocenter depth:
       5km
       5km
       5km
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.1754012201998.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 307°   dip: 36°   rake: 152°
Nodal Plane 2: strike: 60°   dip: 74°   rake: 57°
Quality: azimuthalGap: -1°   stationPolarityCount: 77   misfitWeightCount: 8.8   misfit: 0.02   stationDistributionRatio: 0.52   meanDistP: 46.9   meanDistT: 34.1   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754012201998.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.1754012201998.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 275°   dip: 38°   rake: 110°
Nodal Plane 2: strike: 70°   dip: 54°   rake: 75°
Quality: azimuthalGap: 150°   stationPolarityCount: 77   misfit: 0.04   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 44.62   fracAcc30degPref: 0.34   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754012201998.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754012201998
Event info last updated: 2025.08.01-02:35:01 UTC
Event first association/location: 2025.08.01-01:42:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA