Earthquake Information
 Origin Time
 2025-12-21 18:30:10 (GMT)
 Magnitude
 M 1.6
 Latitude
 38.0538° N
 Longitude
 24.0420° E
 Focal Depth
 9 km
 # of Arrivals
 26
 Location 28.2 km ENE of Athens
59.7 km SE of Chalkida
69.8 km ESE of Thiva
 Solution type
 manual
 Files / Links
 QuakeML  GSE2.0  Alert  .phi  
  

  Station data

StationNetDist.(km)Azim.PhaseArr.TimeRes.Wgt.Type
MRTHHA11.7311 P18:30:13.22 0.11.0M
MRTHHA11.7311 S18:30:15.13 -0.11.0M
ATHUHA24.6247 P18:30:15.41 0.21.0M
ATHUHA24.6247 S18:30:18.48 -0.41.0M
GR27B1Y25.6 45 P18:30:15.48 0.21.0M
GR27B1Y25.6 45 S18:30:18.89 -0.21.0M
NOACHL29.8253 P18:30:16.36 0.41.0M
NOACHL29.8253 S18:30:20.24 0.01.0M
ATHHL29.8253 P18:30:16.35 0.41.0M
ATHHL29.8253 S18:30:20.24 0.01.0M
VLYHL31.2224 P18:30:16.41 0.21.0M
VLYHL31.2224 S18:30:20.43 -0.31.0M
ALIOHA32.4272 P18:30:16.69 0.21.0M
ALIOHA32.4272 S18:30:20.94 -0.11.0M
KARYHA34.7 94 P18:30:16.91 0.11.0M
KARYHA34.7 94 S18:30:21.62 -0.11.0M
ERTRHA45.1330 P18:30:18.86 0.41.0M
ERTRHA45.1330 S18:30:24.62 0.01.0M
MDRAHA50.4271 P18:30:19.62 0.21.0M
MDRAHA50.4271 S18:30:26.20 -0.11.0M
VILLHA65.0281 P18:30:22.11 0.31.0M
VILLHA65.0281 S18:30:30.26 -0.31.0M
GR261Y67.3305 P18:30:22.31 0.11.0M
GR261Y67.3305 S18:30:31.04 -0.11.0M
LTKHP94.2268 P18:30:27.21 0.81.0M
LTKHP94.2268 S18:30:39.17 0.51.0M


  Solution details 

Event:
    Public ID              nkua2025yyes
    Description
      region name: Aegean Sea
Origin:
    Date                   2025-12-21
    Time                  18:30:10.36
    Latitude              38.0538 deg  +/-      0 km
    Longitude             24.0420 deg  +/-      0 km
    Depth                       9 km   +/-    1 km
    Agency                 HA
    Author                 A. Karakonstantis
    Mode                   manual
    Status                 confirmed
    Residual RMS             0.21 s
    Azimuthal gap             130 deg

2 Network magnitudes:
    MLv       1.64 +/- 0.08  11            
    M         1.64           11 preferred  

26 Phase arrivals:
    sta  net   dist azi  phase   time          res     wt  sta
    MRTH  HA    0.1 311  P       18:30:13.22   0.1 M  1.0  MRTH 
    MRTH  HA    0.1 311  S       18:30:15.13  -0.1 M  1.0  MRTH 
    ATHU  HA    0.2 247  P       18:30:15.41   0.2 M  1.0  ATHU 
    ATHU  HA    0.2 247  S       18:30:18.48  -0.4 M  1.0  ATHU 
    GR27B 1Y    0.2  45  P       18:30:15.48   0.2 M  1.0  GR27B
    GR27B 1Y    0.2  45  S       18:30:18.89  -0.2 M  1.0  GR27B
    ATH   HL    0.3 253  P       18:30:16.35   0.4 M  1.0  ATH  
    ATH   HL    0.3 253  S       18:30:20.24  -0.0 M  1.0  ATH  
    NOAC  HL    0.3 253  P       18:30:16.36   0.4 M  1.0  NOAC 
    NOAC  HL    0.3 253  S       18:30:20.24  -0.0 M  1.0  NOAC 
    VLY   HL    0.3 224  P       18:30:16.41   0.2 M  1.0  VLY  
    VLY   HL    0.3 224  S       18:30:20.43  -0.3 M  1.0  VLY  
    ALIO  HA    0.3 272  P       18:30:16.69   0.2 M  1.0  ALIO 
    ALIO  HA    0.3 272  S       18:30:20.94  -0.1 M  1.0  ALIO 
    KARY  HA    0.3  94  P       18:30:16.91   0.1 M  1.0  KARY 
    KARY  HA    0.3  94  S       18:30:21.62  -0.1 M  1.0  KARY 
    ERTR  HA    0.4 330  P       18:30:18.86   0.4 M  1.0  ERTR 
    ERTR  HA    0.4 330  S       18:30:24.62  -0.0 M  1.0  ERTR 
    MDRA  HA    0.5 271  P       18:30:19.62   0.2 M  1.0  MDRA 
    MDRA  HA    0.5 271  S       18:30:26.20  -0.1 M  1.0  MDRA 
    VILL  HA    0.6 281  P       18:30:22.11   0.3 M  1.0  VILL 
    VILL  HA    0.6 281  S       18:30:30.26  -0.3 M  1.0  VILL 
    GR26  1Y    0.6 305  P       18:30:22.31   0.1 M  1.0  GR26 
    GR26  1Y    0.6 305  S       18:30:31.04  -0.1 M  1.0  GR26 
    LTK   HP    0.8 268  P       18:30:27.21   0.8 M  1.0  LTK  
    LTK   HP    0.8 268  S       18:30:39.17   0.5 M  1.0  LTK  

13 Station magnitudes:
    sta  net   dist azi  type   value   res        amp per
    MRTH  HA    0.1 311  MLv     1.83  0.19    2.74439      
    ATHU  HA    0.2 247  MLv     1.66  0.02   0.549173      
    GR27B 1Y    0.2  45  MLv     1.41 -0.23   0.468161      
    ATH   HL    0.3 253  MLv     1.75  0.11   0.802885      
    NOAC  HL    0.3 253  MLv     1.77  0.13   0.843476      
    VLY   HL    0.3 224  MLv     1.69  0.05   0.643664      
    ALIO  HA    0.3 272  MLv     1.64  0.00   0.541649      
    KARY  HA    0.3  94  MLv     1.63 -0.02   0.457445      
    ERTR  HA    0.4 330  MLv     1.49 -0.16   0.180935      
    MDRA  HA    0.5 271  MLv     1.65  0.01   0.195465      
    VILL  HA    0.6 281  MLv     1.68  0.04   0.114749      
    GR26  1Y    0.6 305  MLv     1.60 -0.04   0.0926176      
    LTK   HP    0.8 268  MLv     1.47 -0.17   0.190427