Early-est:     Off East Coast of Kamchatka    2025.08.01-22:03:05.10    q:A      mb:5.1    Mwp:5.9*    Mwpd:-    Td*T50Ex:1.3     fmamp_polarity:./hypo.1754085790411.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754085790411.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754085790411.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: 5.1 [87]    Mwp: 5.9* [27]    Mwpd: 6.0Xinv [23]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.01-22:03:05.10 UTC
Hypocenter: lat: 52.16°  lon: 159.89°  [+/-14km]    depth: 9km  [+/-15km]
Location Quality: qualityCode:  A     stdErr: 1.4s   assocPhases: 128   usedPhases: 85
minDist: 1.1°   maxDist: 147.8°   AzGap: 117°   2ndAzGap: 128°   atten: -1.10 [+/-0.26]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 14km   azMaxHorUnc: 171°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 172°   majorAxisPlunge: 4°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 269°   intermediateAxisPlunge: 61°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [75]    Td: 2.4s [10]    Td*T50Ex: 1.3 [10]    To: 33.1s [70]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~70km
   North America / Pacific [subduction zone]: distance: ~440km
   Okhotsk / North America [subduction zone]: distance: ~440km
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 (70km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   1.3
   1.3
   1.3
Td*To:
     79.4
     79.4
     79.4
Mwp magnitude:
       5.9*
       5.9*
       5.9*
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.1754085790411.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 104°   dip: 49°   rake: 19°
Nodal Plane 2: strike: 1°   dip: 76°   rake: 137°
Quality: azimuthalGap: -1°   stationPolarityCount: 77   misfitWeightCount: 9.1   misfit: 0.09   stationDistributionRatio: 0.42   meanDistP: 44.5   meanDistT: 41.3   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754085790411.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.1754085790411.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 109°   dip: 13°   rake: -2°
Nodal Plane 2: strike: 201°   dip: 90°   rake: -103°
Quality: azimuthalGap: 139°   stationPolarityCount: 76   misfit: 0.22   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 45.92   fracAcc30degPref: 0.38   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754085790411.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754085790411
Event info last updated: 2025.08.01-23:02:02 UTC
Event first association/location: 2025.08.01-22:10:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA