Early-est:     Near East Coast of Honshu, Japan    2026.06.26-02:48:53.16    q:D      mb:-    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1782442140115.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1782442140115.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1782442140115.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: 5.1X [3]    Mwp: - [0]    Mwpd: - [0]
Region: Near East Coast of Honshu, Japan
Origin Time: 2026.06.26-02:48:53.16 UTC
Hypocenter: lat: 36.49°  lon: 140.66°  [+/-29km]    depth: 80km  [+/-34km]
Location Quality: qualityCode:  D     stdErr: 6.9s   assocPhases: 12   usedPhases: 7
minDist: 2.0°   maxDist: 77.8°   AzGap: 181°   2ndAzGap: 224°   atten: -9.90 [+/-0.00]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 8km   maxHorUnc: 29km   azMaxHorUnc: 66°
68%ConfEllipsoid:   semiMajorAxisLength: 48km   majorAxisAzimuth: 247°   majorAxisPlunge: 43°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 28°   intermediateAxisPlunge: 39°   semiMinorAxisLength: 9km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 79%
T50Ex: 0.3X [1]    Td: -s [0]    Td*T50Ex: - [0]    To: -s [0]
Closest plate boundaries:
   Pacific \ Okhotsk [subduction zone]: distance: ~180km
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 (180km)
 no
 no
Prob underwater:
 79%
 79%
 79%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       80km
       80km
       80km
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.1782442140115.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 18°   dip: 42°   rake: 83°
Nodal Plane 2: strike: 208°   dip: 48°   rake: 97°
Quality: azimuthalGap: -1°   stationPolarityCount: 8   misfitWeightCount: 4.5   misfit: 0.00   stationDistributionRatio: 0.35   meanDistP: 50.4   meanDistT: 47.1   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1782442140115.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.1782442140115.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 355°   dip: 57°   rake: 116°
Nodal Plane 2: strike: 133°   dip: 41°   rake: 56°
Quality: azimuthalGap: 95°   stationPolarityCount: 8   misfit: 0.30   stationDistributionRatio: 0.57   rmsAngDiffAccPref: 42.28   fracAcc30degPref: 0.35   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1782442140115.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1782442140115
Event info last updated: 2026.06.26-03:47:00 UTC
Event first association/location: 2026.06.26-03:05:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA