Early-est:     Banda Sea    2026.03.28-16:08:50.63    q:B      mb:4.4*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1774714130701.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1774714130701.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1774714130701.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: 4.4* [13]    Mwp: - [0]    Mwpd: - [0]
Region: Banda Sea
Origin Time: 2026.03.28-16:08:50.63 UTC
Hypocenter: lat: -7.00°  lon: 125.41°  [+/-17km]    depth: 484km  [+/-18km]
Location Quality: qualityCode:  B     stdErr: 1.6s   assocPhases: 22   usedPhases: 15
minDist: 3.0°   maxDist: 51.8°   AzGap: 54°   2ndAzGap: 98°   atten: -2.30 [+/-0.55]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 17km   azMaxHorUnc: 160°
68%ConfEllipsoid:   semiMajorAxisLength: 22km   majorAxisAzimuth: 343°   majorAxisPlunge: 18°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 94°   intermediateAxisPlunge: 48°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.2 [8]    Td: 0.9Xs [3]    Td*T50Ex: - [0]    To: 1.4s [8]
Closest plate boundaries:
   Banda Sea - Timor [oceanic convergent boundary]: distance: ~60km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (60km)
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       484km
       484km
       484km
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.1774714130701.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 77°   dip: 43°   rake: 3°
Nodal Plane 2: strike: 345°   dip: 88°   rake: 133°
Quality: azimuthalGap: -1°   stationPolarityCount: 15   misfitWeightCount: 9.2   misfit: 0.04   stationDistributionRatio: 0.46   meanDistP: 46.0   meanDistT: 38.1   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1774714130701.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.1774714130701.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 342°   dip: 73°   rake: 154°
Nodal Plane 2: strike: 80°   dip: 66°   rake: 19°
Quality: azimuthalGap: 70°   stationPolarityCount: 15   misfit: 0.33   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 33.58   fracAcc30degPref: 0.66   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1774714130701.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1774714130701
Event info last updated: 2026.03.28-17:07:00 UTC
Event first association/location: 2026.03.28-16:17:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA