Early-est:     South of Fiji Islands    2025.06.09-20:30:16.02    q:B      mb:4.1*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1749501014238.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1749501014238.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1749501014238.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: 4.1* [9]    Mwp: - [0]    Mwpd: - [0]
Region: South of Fiji Islands
Origin Time: 2025.06.09-20:30:16.02 UTC
Hypocenter: lat: -26.50°  lon: 177.44°  [+/-13km]    depth: 527km  [+/-12km]
Location Quality: qualityCode:  B     stdErr: 1.4s   assocPhases: 17   usedPhases: 13
minDist: 9.9°   maxDist: 149.8°   AzGap: 217°   2ndAzGap: 245°   atten: -1.69 [+/-0.34]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 13km   azMaxHorUnc: 42°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 43°   majorAxisPlunge: 11°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 134°   intermediateAxisPlunge: 6°   semiMinorAxisLength: 12km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.0X [3]    Td: -s [0]    Td*T50Ex: - [0]    To: 0.8Xs [3]
Closest plate boundaries:
Subduction geometry: none or not available
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:
       527km
       527km
       527km
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.1749501014238.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 92°   dip: 31°   rake: -86°
Nodal Plane 2: strike: 267°   dip: 59°   rake: -93°
Quality: azimuthalGap: -1°   stationPolarityCount: 12   misfitWeightCount: 4.4   misfit: 0.09   stationDistributionRatio: 0.33   meanDistP: 50.9   meanDistT: 52.0   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1749501014238.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.1749501014238.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (No solution available)
Nodal Plane 1: strike: 999°   dip: 99°   rake: 999°
Nodal Plane 2: strike: 324°   dip: 13°   rake: 135°
Quality: azimuthalGap: 191°   stationPolarityCount: 12   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1749501014238.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1749501014238
Event info last updated: 2025.06.09-21:29:00 UTC
Event first association/location: 2025.06.09-20:39:04 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA