Early-est:     Near East Coast of Kamchatka    2025.08.04-02:51:07.92    q:B      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754275866679.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754275866679.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754275866679.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* [32]    Mwp: 4.5X [1]    Mwpd: - [0]
Region: Near East Coast of Kamchatka
Origin Time: 2025.08.04-02:51:07.92 UTC
Hypocenter: lat: 51.77°  lon: 158.88°  [+/-15km]    depth: 15km  [+/-14km]
Location Quality: qualityCode:  B     stdErr: 1.1s   assocPhases: 53   usedPhases: 37
minDist: 1.3°   maxDist: 142.2°   AzGap: 225°   2ndAzGap: 226°   atten: -1.41 [+/-0.37]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 15km   azMaxHorUnc: 148°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 328°   majorAxisPlunge: 3°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 58°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [14]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.3s [13]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~120km
   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 (120km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       15km
       15km
       15km
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.1754275866679.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 58°   dip: 19°   rake: -138°
Nodal Plane 2: strike: 287°   dip: 78°   rake: -76°
Quality: azimuthalGap: -1°   stationPolarityCount: 30   misfitWeightCount: 3.3   misfit: 0.06   stationDistributionRatio: 0.38   meanDistP: 50.6   meanDistT: 46.3   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754275866679.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.1754275866679.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: 251°   stationPolarityCount: 30   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754275866679.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754275866679
Event info last updated: 2025.08.04-03:50:00 UTC
Event first association/location: 2025.08.04-03:03:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA