Early-est:     Fiji Islands Region    2026.02.11-03:32:13.91    q:B      mb:4.5*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1770780733288.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1770780733288.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1770780733288.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: 4.5* [21]    Mwp: - [0]    Mwpd: - [0]
Region: Fiji Islands Region
Origin Time: 2026.02.11-03:32:13.91 UTC
Hypocenter: lat: -21.49°  lon: -177.54°  [+/-24km]    depth: 393km  [+/-21km]
Location Quality: qualityCode:  B     stdErr: 1.1s   assocPhases: 65   usedPhases: 35
minDist: 5.6°   maxDist: 151.2°   AzGap: 113°   2ndAzGap: 142°   atten: -1.19 [+/-0.32]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 24km   azMaxHorUnc: 45°
68%ConfEllipsoid:   semiMajorAxisLength: 32km   majorAxisAzimuth: 46°   majorAxisPlunge: 29°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 145°   intermediateAxisPlunge: 16°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.1 [13]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.3s [13]
Closest plate boundaries:
   Tonga - Australia [oceanic spreading ridge]: distance: ~110km
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?:
 no
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       393km
       393km
       393km
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.1770780733288.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 108°   dip: 20°   rake: 141°
Nodal Plane 2: strike: 236°   dip: 77°   rake: 74°
Quality: azimuthalGap: -1°   stationPolarityCount: 23   misfitWeightCount: 5.8   misfit: 0.10   stationDistributionRatio: 0.38   meanDistP: 48.1   meanDistT: 53.1   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1770780733288.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.1770780733288.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 238°   dip: 64°   rake: -140°
Nodal Plane 2: strike: 128°   dip: 55°   rake: -32°
Quality: azimuthalGap: 128°   stationPolarityCount: 23   misfit: 0.29   stationDistributionRatio: 0.61   rmsAngDiffAccPref: 43.82   fracAcc30degPref: 0.66   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1770780733288.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1770780733288
Event info last updated: 2026.02.11-04:31:01 UTC
Event first association/location: 2026.02.11-03:38:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA