Early-est:     Eastern Gulf of Aden    2026.09.26-16:33:44.38    q:B      mb:5.0*    Mwp:5.5    Mwpd:-    Td*T50Ex:0.9     fmamp_polarity:./hypo.1790440423096.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1790440423096.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1790440423096.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: 5.0* [50]    Mwp: 5.5 [8]    Mwpd: 5.8Xinv [8]
Region: Eastern Gulf of Aden
Origin Time: 2026.09.26-16:33:44.38 UTC
Hypocenter: lat: 13.32°  lon: 51.38°  [+/-27km]    depth: 5km  [+/-27km]
Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 96   usedPhases: 50
minDist: 8.5°   maxDist: 124.9°   AzGap: 54°   2ndAzGap: 90°   atten: -1.60 [+/-0.37]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 21km   maxHorUnc: 27km   azMaxHorUnc: 119°
68%ConfEllipsoid:   semiMajorAxisLength: 34km   majorAxisAzimuth: 294°   majorAxisPlunge: 19°   semiIntermediateAxisLength: 29km   intermediateAxisAzimuth: 188°   intermediateAxisPlunge: 38°   semiMinorAxisLength: 24km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [32]    Td: 2.2s [15]    Td*T50Ex: 0.9 [15]    To: 3.6s [31]
Closest plate boundaries:
   Somalia - Arabia [oceanic transform fault]: distance: ~10km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 YES (10km)
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   0.9
   0.9
   0.9
Td*To:
     7.9
     7.9
     7.9
Mwp magnitude:
       5.5
       5.5
       5.5
Hypocenter depth:
       5km
       5km
       5km
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.1790440423096.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 38°   dip: 53°   rake: 154°
Nodal Plane 2: strike: 144°   dip: 70°   rake: 40°
Quality: azimuthalGap: -1°   stationPolarityCount: 43   misfitWeightCount: 7.9   misfit: 0.07   stationDistributionRatio: 0.48   meanDistP: 46.6   meanDistT: 35.1   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1790440423096.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.1790440423096.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 55°   dip: 25°   rake: -152°
Nodal Plane 2: strike: 299°   dip: 78°   rake: -68°
Quality: azimuthalGap: 90°   stationPolarityCount: 43   misfit: 0.21   stationDistributionRatio: 0.77   rmsAngDiffAccPref: 31.51   fracAcc30degPref: 0.54   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1790440423096.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1790440423096
Event info last updated: 2026.09.26-17:32:01 UTC
Event first association/location: 2026.09.26-16:40:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA