Early-est:     Off East Coast of Kamchatka    2025.07.31-23:07:58.47    q:B      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754003285229.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754003285229.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754003285229.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: 4.9* [40]    Mwp: - [0]    Mwpd: - [0]
Region: Off East Coast of Kamchatka
Origin Time: 2025.07.31-23:07:58.47 UTC
Hypocenter: lat: 52.36°  lon: 161.17°  [+/-10km]    depth: 9km  [+/-12km]
Location Quality: qualityCode:  B     stdErr: 2.2s   assocPhases: 68   usedPhases: 43
minDist: 1.7°   maxDist: 85.8°   AzGap: 164°   2ndAzGap: 164°   atten: -0.61 [+/-0.30]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 9km   maxHorUnc: 10km   azMaxHorUnc: 137°
68%ConfEllipsoid:   semiMajorAxisLength: 13km   majorAxisAzimuth: 313°   majorAxisPlunge: 17°   semiIntermediateAxisLength: 12km   intermediateAxisAzimuth: 193°   intermediateAxisPlunge: 58°   semiMinorAxisLength: 10km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [30]    Td: -s [0]    Td*T50Ex: - [0]    To: 17.5s [27]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~30km
   North America / Pacific [subduction zone]: distance: ~370km
   Okhotsk / North America [subduction zone]: distance: ~370km
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 (30km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
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.1754003285229.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 107°   dip: 16°   rake: 107°
Nodal Plane 2: strike: 269°   dip: 74°   rake: 85°
Quality: azimuthalGap: -1°   stationPolarityCount: 41   misfitWeightCount: 5.6   misfit: 0.09   stationDistributionRatio: 0.47   meanDistP: 37.6   meanDistT: 47.6   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754003285229.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.1754003285229.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: 164°   stationPolarityCount: 40   misfit: 0.99   stationDistributionRatio: 0.78   rmsAngDiffAccPref: 7.23   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754003285229.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754003285229
Event info last updated: 2025.08.01-00:06:01 UTC
Event first association/location: 2025.07.31-23:19:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA