Early-est:     Near East Coast of Kamchatka    2025.08.06-06:36:25.29    q:B      mb:5.2    Mwp:5.7*    Mwpd:-    Td*T50Ex:0.7     fmamp_polarity:./hypo.1754462184239.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754462184239.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754462184239.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 [58]    Mwp: 5.7* [13]    Mwpd: 5.8Xinv [11]
Region: Near East Coast of Kamchatka
Origin Time: 2025.08.06-06:36:25.29 UTC
Hypocenter: lat: 51.83°  lon: 158.92°  [+/-16km]    depth: 9km  [+/-13km]
Location Quality: qualityCode:  B     stdErr: 1.7s   assocPhases: 99   usedPhases: 57
minDist: 1.2°   maxDist: 144.8°   AzGap: 140°   2ndAzGap: 173°   atten: -0.81 [+/-0.39]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 16km   azMaxHorUnc: 123°
68%ConfEllipsoid:   semiMajorAxisLength: 20km   majorAxisAzimuth: 302°   majorAxisPlunge: 12°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 209°   intermediateAxisPlunge: 15°   semiMinorAxisLength: 12km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.3 [38]    Td: 2.0s [10]    Td*T50Ex: 0.7 [10]    To: 4.0s [36]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~120km
   North America / Pacific [subduction zone]: distance: ~510km
   Okhotsk / North America [subduction zone]: distance: ~510km
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 (120km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.7
   0.7
   0.7
Td*To:
     8.0
     8.0
     8.0
Mwp magnitude:
       5.7*
       5.7*
       5.7*
Hypocenter depth:
       9km
       9km
       9km
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.1754462184239.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 171°   dip: 40°   rake: 84°
Nodal Plane 2: strike: 359°   dip: 50°   rake: 95°
Quality: azimuthalGap: -1°   stationPolarityCount: 46   misfitWeightCount: 6.3   misfit: 0.02   stationDistributionRatio: 0.63   meanDistP: 44.1   meanDistT: 31.9   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754462184239.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.1754462184239.mech.fmamp_polarity_waveform.mechanism.jpg
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: 173°   stationPolarityCount: 45   misfit: 0.99   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 33.93   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754462184239.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754462184239
Event info last updated: 2025.08.06-07:35:00 UTC
Event first association/location: 2025.08.06-06:43:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA