Early-est:     Off East Coast of Kamchatka    2025.08.01-03:39:45.54    q:A      mb:5.2*    Mwp:6.0    Mwpd:-    Td*T50Ex:1.6     fmamp_polarity:./hypo.1754019585035.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754019585035.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754019585035.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* [81]    Mwp: 6.0 [10]    Mwpd: 6.1Xinv [9]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.01-03:39:45.54 UTC
Hypocenter: lat: 51.94°  lon: 160.12°  [+/-20km]    depth: 2km  [+/-18km]
Location Quality: qualityCode:  A     stdErr: 1.5s   assocPhases: 148   usedPhases: 71
minDist: 1.4°   maxDist: 169.8°   AzGap: 99°   2ndAzGap: 115°   atten: -1.32 [+/-0.32]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 20km   azMaxHorUnc: 139°
68%ConfEllipsoid:   semiMajorAxisLength: 24km   majorAxisAzimuth: 319°   majorAxisPlunge: 10°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 118°   intermediateAxisPlunge: 79°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6 [71]    Td: 2.6s [13]    Td*T50Ex: 1.6 [13]    To: 37.7s [68]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~60km
   North America / Pacific [subduction zone]: distance: ~450km
   Okhotsk / North America [subduction zone]: distance: ~450km
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:
   1.6
   1.6
   1.6
Td*To:
     98.0
     98.0
     98.0
Mwp magnitude:
       6.0
       6.0
       6.0
Hypocenter depth:
       2km
       2km
       2km
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.1754019585035.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 350°   dip: 73°   rake: 168°
Nodal Plane 2: strike: 84°   dip: 78°   rake: 18°
Quality: azimuthalGap: -1°   stationPolarityCount: 67   misfitWeightCount: 7.8   misfit: 0.11   stationDistributionRatio: 0.46   meanDistP: 50.9   meanDistT: 44.7   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754019585035.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.1754019585035.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 333°   dip: 70°   rake: -172°
Nodal Plane 2: strike: 241°   dip: 83°   rake: -20°
Quality: azimuthalGap: 139°   stationPolarityCount: 66   misfit: 0.27   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 14.71   fracAcc30degPref: 0.98   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754019585035.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754019585035
Event info last updated: 2025.08.01-04:38:01 UTC
Event first association/location: 2025.08.01-03:47:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA