Early-est:     Tonga Islands    2026.02.14-06:45:01.56    q:C      mb:4.4*    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: 4.4* [9]    Mwp: - [0]    Mwpd: - [0] Region: Tonga Islands Origin Time: 2026.02.14-06:45:01.56 UTC Hypocenter: lat: -21.47°  lon: -174.99°  [+/-35km]    depth: 299km  [+/-41km] Location Quality: qualityCode:  C     stdErr: 1.9s   assocPhases: 34   usedPhases: 11 minDist: 5.3°   maxDist: 147.3°   AzGap: 122°   2ndAzGap: 142°   atten: -1.56 [+/-0.18] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 17km   maxHorUnc: 35km   azMaxHorUnc: 41° 68%ConfEllipsoid:   semiMajorAxisLength: 54km   majorAxisAzimuth: 222°   majorAxisPlunge: 43°   semiIntermediateAxisLength: 26km   intermediateAxisAzimuth: 33°   intermediateAxisPlunge: 46°   semiMinorAxisLength: 21km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.2X [3]    Td: 0.2Xs [1]    Td*T50Ex: - [0]    To: 3.4Xs [2] Closest plate boundaries:    Tonga / Pacific [subduction zone]: distance: ~120km    Tonga - Australia [oceanic spreading ridge]: distance: ~140km    Tonga - Niuafo'ou [continental convergent boundary]: distance: ~200km Subduction geometry:    Zone: Kermadec-Tonga: 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:        299km        299km        299km 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: 57°   dip: 53°   rake: -15° Nodal Plane 2: strike: 156°   dip: 78°   rake: -142° Quality: azimuthalGap: -1°   stationPolarityCount: 10   misfitWeightCount: 3.5   misfit: 0.06   stationDistributionRatio: 0.38   meanDistP: 48.6   meanDistT: 53.7   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: 314°   dip: 87°   rake: 117° Nodal Plane 2: strike: 50°   dip: 27°   rake: 7° Quality: azimuthalGap: 136°   stationPolarityCount: 10   misfit: 0.30   stationDistributionRatio: 0.52   rmsAngDiffAccPref: 48.93   fracAcc30degPref: 0.27   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1771051501557
Event info last updated: 2026.02.14-07:44:02 UTC
Event first association/location: 2026.02.14-07:44:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA