Early-est:     Greece    2026.06.23-03:55:29.25    q:B      mb:4.4*    Mwp:-    Mwpd:-    Td*T50Ex:0.1     fmamp_polarity:./hypo.1782186931843.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1782186931843.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1782186931843.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* [17]    Mwp: - [0]    Mwpd: - [0]
Region: Greece
Origin Time: 2026.06.23-03:55:29.25 UTC
Hypocenter: lat: 38.64°  lon: 23.48°  [+/-8km]    depth: 9km  [+/-9km]
Location Quality: qualityCode:  B     stdErr: 1.9s   assocPhases: 29   usedPhases: 21
minDist: 1.7°   maxDist: 117.2°   AzGap: 93°   2ndAzGap: 157°   atten: -1.43 [+/-0.25]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 8km   maxHorUnc: 8km   azMaxHorUnc: 133°
68%ConfEllipsoid:   semiMajorAxisLength: 11km   majorAxisAzimuth: 258°   majorAxisPlunge: 32°   semiIntermediateAxisLength: 10km   intermediateAxisAzimuth: 166°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 9km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 93%
T50Ex: 0.3 [10]    Td: 0.4s [4]    Td*T50Ex: 0.1 [4]    To: 13.1s [10]
Closest plate boundaries:
   Aegean Sea - Eurasia [continental transform fault]: distance: ~40km
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 (40km)
Prob underwater:
 93%
 93%
 93%
Td*T50Ex:
   0.1
   0.1
   0.1
Td*To:
     5.2
     5.2
     5.2
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.1782186931843.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 16°   dip: 33°   rake: 112°
Nodal Plane 2: strike: 171°   dip: 60°   rake: 77°
Quality: azimuthalGap: -1°   stationPolarityCount: 16   misfitWeightCount: 4.8   misfit: 0.03   stationDistributionRatio: 0.58   meanDistP: 46.3   meanDistT: 44.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1782186931843.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.1782186931843.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (No solution available)
Nodal Plane 1: strike: 999°   dip: 99°   rake: 999°
Nodal Plane 2: strike: 324°   dip: 13°   rake: 135°
Quality: azimuthalGap: 185°   stationPolarityCount: 13   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1782186931843.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1782186931843
Event info last updated: 2026.06.23-04:54:02 UTC
Event first association/location: 2026.06.23-03:57:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA