Early-est:     Tanimbar Islands Reg., Indonesia    2026.08.11-12:45:17.71    q:B      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1786452313528.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1786452313528.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1786452313528.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: 4.8* [14]    Mwp: - [0]    Mwpd: - [0]
Region: Tanimbar Islands Reg., Indonesia
Origin Time: 2026.08.11-12:45:17.71 UTC
Hypocenter: lat: -8.02°  lon: 130.69°  [+/-23km]    depth: 9km  [+/-20km]
Location Quality: qualityCode:  B     stdErr: 2.2s   assocPhases: 46   usedPhases: 17
minDist: 4.8°   maxDist: 149.4°   AzGap: 78°   2ndAzGap: 137°   atten: -1.64 [+/-0.33]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 23km   azMaxHorUnc: 159°
68%ConfEllipsoid:   semiMajorAxisLength: 30km   majorAxisAzimuth: 157°   majorAxisPlunge: 17°   semiIntermediateAxisLength: 20km   intermediateAxisAzimuth: 48°   intermediateAxisPlunge: 48°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6 [8]    Td: -s [0]    Td*T50Ex: - [0]    To: 31.9s [7]
Closest plate boundaries:
   Timor - Australia [continental rift boundary]: distance: ~70km
   Banda Sea - Timor [continental convergent boundary]: distance: ~150km
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:
       9km
       9km
       9km
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.1786452313528.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 139°   dip: 72°   rake: -4°
Nodal Plane 2: strike: 230°   dip: 86°   rake: -162°
Quality: azimuthalGap: -1°   stationPolarityCount: 15   misfitWeightCount: 6.5   misfit: 0.04   stationDistributionRatio: 0.39   meanDistP: 49.6   meanDistT: 51.4   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1786452313528.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.1786452313528.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 288°   dip: 28°   rake: -92°
Nodal Plane 2: strike: 110°   dip: 62°   rake: -89°
Quality: azimuthalGap: 137°   stationPolarityCount: 15   misfit: 0.10   stationDistributionRatio: 0.77   rmsAngDiffAccPref: 36.05   fracAcc30degPref: 0.56   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1786452313528.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1786452313528
Event info last updated: 2026.08.11-13:43:12 UTC
Event first association/location: 2026.08.11-12:50:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA