Early-est:     Fiji Islands Region    2026.06.22-14:51:07.87    q:A      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1782139868749.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1782139868749.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1782139868749.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: 4.8* [51]    Mwp: - [0]    Mwpd: - [0]
Region: Fiji Islands Region
Origin Time: 2026.06.22-14:51:07.87 UTC
Hypocenter: lat: -21.17°  lon: -178.46°  [+/-10km]    depth: 534km  [+/-13km]
Location Quality: qualityCode:  A     stdErr: 1.2s   assocPhases: 141   usedPhases: 105
minDist: 4.7°   maxDist: 167.5°   AzGap: 57°   2ndAzGap: 83°   atten: -1.70 [+/-0.20]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 8km   maxHorUnc: 10km   azMaxHorUnc: 176°
68%ConfEllipsoid:   semiMajorAxisLength: 13km   majorAxisAzimuth: 292°   majorAxisPlunge: 58°   semiIntermediateAxisLength: 13km   intermediateAxisAzimuth: 185°   intermediateAxisPlunge: 10°   semiMinorAxisLength: 9km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.2 [36]    Td: 1.4Xs [3]    Td*T50Ex: - [0]    To: 1.3s [35]
Closest plate boundaries:
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:
       534km
       534km
       534km
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.1782139868749.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 108°   dip: 54°   rake: 154°
Nodal Plane 2: strike: 214°   dip: 69°   rake: 39°
Quality: azimuthalGap: -1°   stationPolarityCount: 52   misfitWeightCount: 17.9   misfit: 0.25   stationDistributionRatio: 0.44   meanDistP: 52.2   meanDistT: 46.6   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1782139868749.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.1782139868749.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 205°   dip: 26°   rake: -5°
Nodal Plane 2: strike: 299°   dip: 88°   rake: -116°
Quality: azimuthalGap: 82°   stationPolarityCount: 52   misfit: 0.33   stationDistributionRatio: 0.62   rmsAngDiffAccPref: 31.72   fracAcc30degPref: 0.65   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1782139868749.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1782139868749
Event info last updated: 2026.06.22-15:50:01 UTC
Event first association/location: 2026.06.22-14:55:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA