Early-est:     Mariana Islands    2026.02.12-10:30:17.50    q:A      mb:5.0*    Mwp:-    Mwpd:-    Td*T50Ex:1.0     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* [52]    Mwp: 5.7X [1]    Mwpd: 5.6Xinv [3] Region: Mariana Islands Origin Time: 2026.02.12-10:30:17.50 UTC Hypocenter: lat: 13.88°  lon: 144.77°  [+/-13km]    depth: 148km  [+/-16km] Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 89   usedPhases: 69 minDist: 0.3°   maxDist: 148.2°   AzGap: 43°   2ndAzGap: 65°   atten: -1.04 [+/-0.28] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 13km   azMaxHorUnc: 54° 68%ConfEllipsoid:   semiMajorAxisLength: 16km   majorAxisAzimuth: 203°   majorAxisPlunge: 58°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 65°   intermediateAxisPlunge: 25°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [40]    Td: 1.9s [8]    Td*T50Ex: 1.0 [8]    To: 2.2s [38] Closest plate boundaries:    Philippine Sea - Mariana [oceanic spreading ridge]: distance: ~90km    Mariana / Pacific [subduction zone]: distance: ~170km    Philippine Sea / Pacific [subduction zone]: distance: ~310km Subduction geometry:    Zone: Izu-Bonin: 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 (170km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    1.0    1.0    1.0 Td*To:      4.2      4.2      4.2 Mwp magnitude:        -        -        - Hypocenter depth:        148km        148km        148km 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: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 304°   dip: 74°   rake: 173° Nodal Plane 2: strike: 35°   dip: 83°   rake: 17° Quality: azimuthalGap: -1°   stationPolarityCount: 55   misfitWeightCount: 15.6   misfit: 0.19   stationDistributionRatio: 0.49   meanDistP: 49.6   meanDistT: 32.8   qualityCode: C 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: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 304°   dip: 72°   rake: 179° Nodal Plane 2: strike: 34°   dip: 89°   rake: 18° Quality: azimuthalGap: 77°   stationPolarityCount: 55   misfit: 0.27   stationDistributionRatio: 0.83   rmsAngDiffAccPref: 29.10   fracAcc30degPref: 0.73   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1770892217271
Event info last updated: 2026.02.12-11:29:00 UTC
Event first association/location: 2026.02.12-10:36:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA