Early-est:     Off East Coast of Kamchatka    2026.03.27-16:45:05.28    q:C      mb:5.0*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1774629901146.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1774629901146.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1774629901146.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: 5.0* [27]    Mwp: - [0]    Mwpd: - [0]
Region: Off East Coast of Kamchatka
Origin Time: 2026.03.27-16:45:05.28 UTC
Hypocenter: lat: 52.47°  lon: 160.45°  [+/-55km]    depth: 12km  [+/-34km]
Location Quality: qualityCode:  C     stdErr: 2.0s   assocPhases: 50   usedPhases: 28
minDist: 15.7°   maxDist: 85.1°   AzGap: 144°   2ndAzGap: 163°   atten: -0.64 [+/-0.40]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 31km   maxHorUnc: 55km   azMaxHorUnc: 143°
68%ConfEllipsoid:   semiMajorAxisLength: 69km   majorAxisAzimuth: 143°   majorAxisPlunge: 13°   semiIntermediateAxisLength: 39km   intermediateAxisAzimuth: 237°   intermediateAxisPlunge: 15°   semiMinorAxisLength: 30km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [24]    Td: -s [0]    Td*T50Ex: - [0]    To: 31.6s [23]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~50km
   North America / Pacific [subduction zone]: distance: ~390km
   Okhotsk / North America [subduction zone]: distance: ~390km
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 (50km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       12km
       12km
       12km
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.1774629901146.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 209°   dip: 9°   rake: 45°
Nodal Plane 2: strike: 75°   dip: 84°   rake: 96°
Quality: azimuthalGap: -1°   stationPolarityCount: 26   misfitWeightCount: 5.2   misfit: 0.11   stationDistributionRatio: 0.45   meanDistP: 52.5   meanDistT: 44.2   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1774629901146.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.1774629901146.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 317°   dip: 87°   rake: -165°
Nodal Plane 2: strike: 226°   dip: 75°   rake: -3°
Quality: azimuthalGap: 144°   stationPolarityCount: 26   misfit: 0.32   stationDistributionRatio: 0.66   rmsAngDiffAccPref: 13.48   fracAcc30degPref: 1.00   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1774629901146.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1774629901146
Event info last updated: 2026.03.27-17:44:01 UTC
Event first association/location: 2026.03.27-16:59:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA