Early-est:     Solomon Islands    2025.08.04-03:54:22.88    q:B      mb:5.0*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754279663942.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754279663942.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754279663942.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: 5.0* [34]    Mwp: - [0]    Mwpd: - [0]
Region: Solomon Islands
Origin Time: 2025.08.04-03:54:22.88 UTC
Hypocenter: lat: -8.81°  lon: 160.08°  [+/-12km]    depth: 80km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 1.4s   assocPhases: 83   usedPhases: 52
minDist: 0.6°   maxDist: 149.2°   AzGap: 36°   2ndAzGap: 53°   atten: -1.33 [+/-0.20]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 12km   azMaxHorUnc: 59°
68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 183°   majorAxisPlunge: 60°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 78°   intermediateAxisPlunge: 8°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [19]    Td: 2.4Xs [2]    Td*T50Ex: - [0]    To: 5.2s [19]
Closest plate boundaries:
   Pacific / Australia [subduction zone]: distance: ~150km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (150km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       80km
       80km
       80km
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.1754279663942.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 331°   dip: 63°   rake: -31°
Nodal Plane 2: strike: 76°   dip: 63°   rake: -149°
Quality: azimuthalGap: -1°   stationPolarityCount: 33   misfitWeightCount: 12.4   misfit: 0.08   stationDistributionRatio: 0.53   meanDistP: 35.9   meanDistT: 29.5   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754279663942.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.1754279663942.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 120°   dip: 41°   rake: -91°
Nodal Plane 2: strike: 301°   dip: 49°   rake: -89°
Quality: azimuthalGap: 61°   stationPolarityCount: 33   misfit: 0.22   stationDistributionRatio: 0.70   rmsAngDiffAccPref: 28.14   fracAcc30degPref: 0.80   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754279663942.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754279663942
Event info last updated: 2025.08.04-04:53:03 UTC
Event first association/location: 2025.08.04-04:00:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA