Early-est:     Off East Coast of Kamchatka    2025.08.04-03:36:20.83    q:B      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754278580785.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754278580785.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754278580785.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* [14]    Mwp: 4.6X [1]    Mwpd: - [0]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.04-03:36:20.83 UTC
Hypocenter: lat: 52.08°  lon: 159.47°  [+/-13km]    depth: 49km  [+/-19km]
Location Quality: qualityCode:  B     stdErr: 0.7s   assocPhases: 44   usedPhases: 18
minDist: 1.1°   maxDist: 85.1°   AzGap: 226°   2ndAzGap: 256°   atten: -1.58 [+/-0.65]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 10km   maxHorUnc: 13km   azMaxHorUnc: 89°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 3°   majorAxisPlunge: 83°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 269°   intermediateAxisPlunge: 0°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [11]    Td: -s [0]    Td*T50Ex: - [0]    To: 13.8s [11]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~100km
   North America / Pacific [subduction zone]: distance: ~460km
   Okhotsk / North America [subduction zone]: distance: ~460km
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:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       49km
       49km
       49km
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.1754278580785.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 61°   dip: 50°   rake: -139°
Nodal Plane 2: strike: 302°   dip: 60°   rake: -48°
Quality: azimuthalGap: -1°   stationPolarityCount: 17   misfitWeightCount: 3.8   misfit: 0.00   stationDistributionRatio: 0.38   meanDistP: 47.9   meanDistT: 52.3   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754278580785.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.1754278580785.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 73°   dip: 63°   rake: -119°
Nodal Plane 2: strike: 303°   dip: 39°   rake: -47°
Quality: azimuthalGap: 146°   stationPolarityCount: 17   misfit: 0.26   stationDistributionRatio: 0.72   rmsAngDiffAccPref: 39.97   fracAcc30degPref: 0.38   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754278580785.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754278580785
Event info last updated: 2025.08.04-04:35:01 UTC
Event first association/location: 2025.08.04-03:51:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA