Early-est:     Off East Coast of Kamchatka    2026.02.09-05:09:45.82    q:A      mb:5.1*    Mwp:5.6    Mwpd:-    Td*T50Ex:0.7     fmamp_polarity:./hypo.1770613782014.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1770613782014.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1770613782014.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: 5.1* [71]    Mwp: 5.6 [11]    Mwpd: 5.7Xinv [8]
Region: Off East Coast of Kamchatka
Origin Time: 2026.02.09-05:09:45.82 UTC
Hypocenter: lat: 51.49°  lon: 159.33°  [+/-18km]    depth: 15km  [+/-15km]
Location Quality: qualityCode:  A     stdErr: 1.7s   assocPhases: 112   usedPhases: 78
minDist: 1.6°   maxDist: 148.3°   AzGap: 99°   2ndAzGap: 106°   atten: -1.30 [+/-0.29]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 18km   azMaxHorUnc: 124°
68%ConfEllipsoid:   semiMajorAxisLength: 23km   majorAxisAzimuth: 304°   majorAxisPlunge: 2°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 42°   intermediateAxisPlunge: 73°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [54]    Td: 1.5s [5]    Td*T50Ex: 0.7 [5]    To: 12.5s [48]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~80km
   North America / Pacific [subduction zone]: distance: ~520km
   Okhotsk / North America [subduction zone]: distance: ~520km
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 (80km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.7
   0.7
   0.7
Td*To:
     18.8
     18.8
     18.8
Mwp magnitude:
       5.6
       5.6
       5.6
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.1770613782014.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 23°   dip: 64°   rake: 153°
Nodal Plane 2: strike: 126°   dip: 66°   rake: 29°
Quality: azimuthalGap: -1°   stationPolarityCount: 64   misfitWeightCount: 8.7   misfit: 0.10   stationDistributionRatio: 0.37   meanDistP: 50.3   meanDistT: 38.7   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1770613782014.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.1770613782014.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 216°   dip: 83°   rake: -139°
Nodal Plane 2: strike: 120°   dip: 50°   rake: -9°
Quality: azimuthalGap: 122°   stationPolarityCount: 64   misfit: 0.25   stationDistributionRatio: 0.70   rmsAngDiffAccPref: 44.91   fracAcc30degPref: 0.39   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1770613782014.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1770613782014
Event info last updated: 2026.02.09-06:08:01 UTC
Event first association/location: 2026.02.09-05:16:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA