Early-est:     Off East Coast of Kamchatka    2025.08.01-09:45:23.89    q:A      mb:5.1*    Mwp:-    Mwpd:-    Td*T50Ex:0.2     fmamp_polarity:./hypo.1754041526830.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754041526830.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754041526830.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* [53]    Mwp: 5.0X [1]    Mwpd: - [0]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.01-09:45:23.89 UTC
Hypocenter: lat: 51.63°  lon: 159.22°  [+/-12km]    depth: 18km  [+/-13km]
Location Quality: qualityCode:  A     stdErr: 1.6s   assocPhases: 95   usedPhases: 63
minDist: 1.4°   maxDist: 148.3°   AzGap: 127°   2ndAzGap: 143°   atten: -1.09 [+/-0.29]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 10km   maxHorUnc: 12km   azMaxHorUnc: 142°
68%ConfEllipsoid:   semiMajorAxisLength: 15km   majorAxisAzimuth: 132°   majorAxisPlunge: 23°   semiIntermediateAxisLength: 13km   intermediateAxisAzimuth: 23°   intermediateAxisPlunge: 37°   semiMinorAxisLength: 11km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.3 [41]    Td: 0.7s [4]    Td*T50Ex: 0.2 [4]    To: 2.7s [37]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~100km
   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 (100km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.2
   0.2
   0.2
Td*To:
     1.9
     1.9
     1.9
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       18km
       18km
       18km
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.1754041526830.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 187°   dip: 83°   rake: -173°
Nodal Plane 2: strike: 96°   dip: 83°   rake: -7°
Quality: azimuthalGap: -1°   stationPolarityCount: 55   misfitWeightCount: 9.8   misfit: 0.07   stationDistributionRatio: 0.43   meanDistP: 44.7   meanDistT: 37.3   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754041526830.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.1754041526830.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 1°   dip: 88°   rake: 169°
Nodal Plane 2: strike: 91°   dip: 79°   rake: 2°
Quality: azimuthalGap: 143°   stationPolarityCount: 55   misfit: 0.30   stationDistributionRatio: 0.70   rmsAngDiffAccPref: 18.60   fracAcc30degPref: 0.94   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754041526830.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754041526830
Event info last updated: 2025.08.01-10:44:00 UTC
Event first association/location: 2025.08.01-09:52:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA