Early-est:     Ryukyu Islands, Japan    2025.04.11-05:06:15.97    q:B      mb:5.0*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     fmamp_polarity_waveform:     hash:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 5.0* [20]    Mwp: - [0]    Mwpd: - [0] Region: Ryukyu Islands, Japan Origin Time: 2025.04.11-05:06:15.97 UTC Hypocenter: lat: 29.21°  lon: 130.40°  [+/-6km]    depth: 9km  [+/-6km] Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 50   usedPhases: 24 minDist: 2.3°   maxDist: 85.0°   AzGap: 59°   2ndAzGap: 106°   atten: -0.76 [+/-0.20] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 5km   maxHorUnc: 6km   azMaxHorUnc: 176° 68%ConfEllipsoid:   semiMajorAxisLength: 8km   majorAxisAzimuth: 356°   majorAxisPlunge: 2°   semiIntermediateAxisLength: 7km   intermediateAxisAzimuth: 263°   intermediateAxisPlunge: 61°   semiMinorAxisLength: 6km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [15]    Td: -s [0]    Td*T50Ex: - [0]    To: 16.1s [15] Closest plate boundaries:    Okinawa / Philippine Sea [subduction zone]: distance: ~120km    Yangtze - Okinawa [continental convergent boundary]: distance: ~130km Subduction geometry:    Zone: Ryukyu: 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:        9km        9km        9km 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)

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 98°   dip: 3°   rake: 65° Nodal Plane 2: strike: 303°   dip: 88°   rake: 91° Quality: azimuthalGap: -1°   stationPolarityCount: 23   misfitWeightCount: 5.1   misfit: 0.09   stationDistributionRatio: 0.40   meanDistP: 44.4   meanDistT: 50.5   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
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
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 232°   dip: 68°   rake: 178° Nodal Plane 2: strike: 323°   dip: 88°   rake: 22° Quality: azimuthalGap: 78°   stationPolarityCount: 20   misfit: 0.31   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 44.08   fracAcc30degPref: 0.51   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1744347976921
Event info last updated: 2025.04.11-06:05:00 UTC
Event first association/location: 2025.04.11-05:09:04 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA