Early-est:     Vanuatu Islands    2026.02.14-02:27:43.87    q:B      mb:5.6    Mwp:6.3*    Mwpd:-    Td*T50Ex:1.6     fmamp_polarity:./hypo.1771036063045.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1771036063045.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1771036063045.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: 5.6 [92]    Mwp: 6.3* [61]    Mwpd: 6.4Xinv [67]
Region: Vanuatu Islands
Origin Time: 2026.02.14-02:27:43.87 UTC
Hypocenter: lat: -15.00°  lon: 166.69°  [+/-22km]    depth: 46km  [+/-31km]
Location Quality: qualityCode:  B     stdErr: 1.2s   assocPhases: 393   usedPhases: 204
minDist: 6.0°   maxDist: 170.1°   AzGap: 20°   2ndAzGap: 25°   atten: -1.34 [+/-0.17]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 17km   maxHorUnc: 22km   azMaxHorUnc: 27°
68%ConfEllipsoid:   semiMajorAxisLength: 35km   majorAxisAzimuth: 188°   majorAxisPlunge: 57°   semiIntermediateAxisLength: 24km   intermediateAxisAzimuth: 61°   intermediateAxisPlunge: 21°   semiMinorAxisLength: 20km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 12%
T50Ex: 0.4 [91]    Td: 3.6s [36]    Td*T50Ex: 1.6 [36]    To: 23.6s [88]
Closest plate boundaries:
   New Hebrides / Australia [subduction zone]: distance: ~50km
   New Hebrides - Pacific [continental convergent boundary]: distance: ~150km
   Pacific / Australia [subduction zone]: distance: ~150km
Subduction geometry:    Zone: Santa Cruz Islands/Vanuatu/Loyalty Islands: 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?:
 YES (50km)
 no
 no
Prob underwater:
 12%
 12%
 12%
Td*T50Ex:
   1.6
   1.6
   1.6
Td*To:
     85.0
     85.0
     85.0
Mwp magnitude:
       6.3*
       6.3*
       6.3*
Hypocenter depth:
       46km
       46km
       46km
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.1771036063045.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 252°   dip: 31°   rake: 26°
Nodal Plane 2: strike: 140°   dip: 77°   rake: 118°
Quality: azimuthalGap: -1°   stationPolarityCount: 104   misfitWeightCount: 27.7   misfit: 0.21   stationDistributionRatio: 0.60   meanDistP: 32.2   meanDistT: 31.4   qualityCode: B
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1771036063045.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 299°   dip: 31°   rake: 56°
Nodal Plane 2: strike: 157°   dip: 65°   rake: 108°
Quality: azimuthalGap: -1°   stationPolarityCount: 36   misfitWeightCount: 10.2   misfit: 0.01   stationDistributionRatio: 0.42   meanDistP: 45.4   meanDistT: 29.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1771036063045.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 288°   dip: 33°   rake: 44°
Nodal Plane 2: strike: 159°   dip: 68°   rake: 115°
Quality: azimuthalGap: 43°   stationPolarityCount: 104   misfit: 0.22   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 20.91   fracAcc30degPref: 0.90   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1771036063045.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1771036063045
Event info last updated: 2026.02.14-03:26:01 UTC
Event first association/location: 2026.02.14-02:33:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA