Early-est:     Off East Coast of Kamchatka    2025.07.31-19:10:11.71    q:B      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1753989015190.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1753989015190.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1753989015190.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* [48]    Mwp: - [0]    Mwpd: - [0]
Region: Off East Coast of Kamchatka
Origin Time: 2025.07.31-19:10:11.71 UTC
Hypocenter: lat: 52.76°  lon: 161.17°  [+/-14km]    depth: 5km  [+/-15km]
Location Quality: qualityCode:  B     stdErr: 2.2s   assocPhases: 89   usedPhases: 54
minDist: 1.5°   maxDist: 85.6°   AzGap: 152°   2ndAzGap: 173°   atten: -0.80 [+/-0.27]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 14km   azMaxHorUnc: 166°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 166°   majorAxisPlunge: 10°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 309°   intermediateAxisPlunge: 77°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.7 [28]    Td: 1.2Xs [1]    Td*T50Ex: - [0]    To: 33.6s [25]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~30km
   North America / Pacific [subduction zone]: distance: ~330km
   Okhotsk / North America [subduction zone]: distance: ~330km
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:
       5km
       5km
       5km
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.1753989015190.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 65°   dip: 79°   rake: -4°
Nodal Plane 2: strike: 156°   dip: 86°   rake: -169°
Quality: azimuthalGap: -1°   stationPolarityCount: 47   misfitWeightCount: 8.2   misfit: 0.06   stationDistributionRatio: 0.46   meanDistP: 41.3   meanDistT: 47.5   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1753989015190.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.1753989015190.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: 151°   stationPolarityCount: 46   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1753989015190.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1753989015190
Event info last updated: 2025.07.31-20:09:01 UTC
Event first association/location: 2025.07.31-19:17:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA