Early-est:     Tanimbar Islands Reg., Indonesia    2026.02.06-21:20:13.62    q:B      mb:5.4    Mwp:5.9*    Mwpd:-    Td*T50Ex:1.1     fmamp_polarity:./hypo.1770412816907.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1770412816907.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1770412816907.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: 5.4 [64]    Mwp: 5.9* [25]    Mwpd: 6.1Xinv [25]
Region: Tanimbar Islands Reg., Indonesia
Origin Time: 2026.02.06-21:20:13.62 UTC
Hypocenter: lat: -7.86°  lon: 130.20°  [+/-20km]    depth: 14km  [+/-22km]
Location Quality: qualityCode:  B     stdErr: 2.0s   assocPhases: 140   usedPhases: 91
minDist: 5.1°   maxDist: 176.1°   AzGap: 22°   2ndAzGap: 39°   atten: -1.30 [+/-0.17]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 18km   maxHorUnc: 20km   azMaxHorUnc: 171°
68%ConfEllipsoid:   semiMajorAxisLength: 24km   majorAxisAzimuth: 172°   majorAxisPlunge: 1°   semiIntermediateAxisLength: 23km   intermediateAxisAzimuth: 262°   intermediateAxisPlunge: 42°   semiMinorAxisLength: 21km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.7 [61]    Td: 1.5s [18]    Td*T50Ex: 1.1 [18]    To: 54.1s [58]
Closest plate boundaries:
   Timor - Australia [continental rift boundary]: distance: ~100km
   Banda Sea - Timor [continental convergent boundary]: distance: ~130km
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:
   1.1
   1.1
   1.1
Td*To:
     81.2
     81.2
     81.2
Mwp magnitude:
       5.9*
       5.9*
       5.9*
Hypocenter depth:
       14km
       14km
       14km
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.1770412816907.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 68°   dip: 44°   rake: 112°
Nodal Plane 2: strike: 219°   dip: 49°   rake: 70°
Quality: azimuthalGap: -1°   stationPolarityCount: 61   misfitWeightCount: 17.1   misfit: 0.20   stationDistributionRatio: 0.51   meanDistP: 33.7   meanDistT: 43.9   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1770412816907.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 29°   dip: 53°   rake: 27°
Nodal Plane 2: strike: 282°   dip: 69°   rake: 140°
Quality: azimuthalGap: -1°   stationPolarityCount: 12   misfitWeightCount: 4.9   misfit: 0.00   stationDistributionRatio: 0.56   meanDistP: 43.5   meanDistT: 46.6   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1770412816907.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 76°   dip: 48°   rake: 127°
Nodal Plane 2: strike: 207°   dip: 54°   rake: 56°
Quality: azimuthalGap: 84°   stationPolarityCount: 61   misfit: 0.33   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 24.28   fracAcc30degPref: 0.84   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1770412816907.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1770412816907
Event info last updated: 2026.02.06-22:19:00 UTC
Event first association/location: 2026.02.06-21:26:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA