Early-est:     Solomon Islands    2026.08.14-20:24:06.14    q:B      mb:4.6*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786739048951.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786739048951.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786739048951.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: 4.6* [13]    Mwp: - [0]    Mwpd: - [0]
Region: Solomon Islands
Origin Time: 2026.08.14-20:24:06.14 UTC
Hypocenter: lat: -11.48°  lon: 161.58°  [+/-18km]    depth: 74km  [+/-21km]
Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 25   usedPhases: 9
minDist: 9.4°   maxDist: 85.2°   AzGap: 130°   2ndAzGap: 166°   atten: -1.81 [+/-0.27]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 18km   azMaxHorUnc: 34°
68%ConfEllipsoid:   semiMajorAxisLength: 25km   majorAxisAzimuth: 188°   majorAxisPlunge: 46°   semiIntermediateAxisLength: 20km   intermediateAxisAzimuth: 72°   intermediateAxisPlunge: 23°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [10]    Td: -s [0]    Td*T50Ex: - [0]    To: 17.8s [8]
Closest plate boundaries:
   Pacific / Australia [subduction zone]: distance: ~20km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (20km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       74km
       74km
       74km
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.1786739048951.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 169°   dip: 12°   rake: -139°
Nodal Plane 2: strike: 38°   dip: 82°   rake: -81°
Quality: azimuthalGap: -1°   stationPolarityCount: 9   misfitWeightCount: 4.4   misfit: 0.00   stationDistributionRatio: 0.54   meanDistP: 48.3   meanDistT: 47.7   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786739048951.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.1786739048951.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: 166°   stationPolarityCount: 9   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786739048951.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786739048951
Event info last updated: 2026.08.14-21:23:00 UTC
Event first association/location: 2026.08.14-20:34:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA