Earthquake Information
 Origin Time
 2025-12-21 17:18:01 (GMT)
 Magnitude
 M 1.8
 Latitude
 38.0505° N
 Longitude
 24.0460° E
 Focal Depth
 8 km
 # of Arrivals
 34
 Location 28.4 km ENE of Athens
60.3 km SE of Chalkida
70.3 km ESE of Thiva
 Solution type
 manual
 Files / Links
 QuakeML  GSE2.0  Alert  .phi  
  

  Station data

StationNetDist.(km)Azim.PhaseArr.TimeRes.Wgt.Type
MRTHHA12.2311 P17:18:03.65 0.11.0M
MRTHHA12.2311 S17:18:05.67 0.01.0M
ATHUHA24.7248 P17:18:05.79 0.11.0M
ATHUHA24.7248 S17:18:08.99 -0.31.0M
GR27B1Y25.7 44 P17:18:05.92 0.11.0M
GR27B1Y25.7 44 S17:18:09.35 -0.21.0M
NOACHL30.0254 P17:18:06.84 0.31.0M
NOACHL30.0254 S17:18:10.75 0.01.0M
ATHHL30.0254 P17:18:06.86 0.41.0M
ATHHL30.0254 S17:18:10.75 0.01.0M
VLYHL31.2225 P17:18:06.95 0.31.0M
VLYHL31.2225 S17:18:10.91 -0.21.0M
ALIOHA32.7273 P17:18:07.07 0.11.0M
ALIOHA32.7273 S17:18:11.36 -0.21.0M
KARYHA34.3 93 P17:18:07.37 0.21.0M
KARYHA34.3 93 S17:18:11.89 -0.21.0M
ERTRHA45.6330 P17:18:09.17 0.11.0M
ERTRHA45.6330 S17:18:15.07 -0.21.0M
MDRAHA50.8271 P17:18:10.04 0.11.0M
MDRAHA50.8271 S17:18:16.70 -0.11.0M
VILLHA65.4281 P17:18:12.55 0.21.0M
VILLHA65.4281 S17:18:20.72 -0.41.0M
PSAHHA67.4329 P17:18:12.55 0.01.0M
PSAHHA67.4329 S17:18:21.53 0.01.0M
GR261Y67.7305 P17:18:12.81 0.01.0M
GR261Y67.7305 S17:18:21.37 -0.51.0M
AMPEHA73.4292 P17:18:14.06 0.41.0M
AMPEHA73.4292 S17:18:23.24 -0.21.0M
MRKAHA83.1331 P17:18:15.57 0.41.0M
MRKAHA83.1331 S17:18:25.98 -0.11.0M
LOUTHA94.1266 P17:18:17.17 0.21.0M
LOUTHA94.1266 S17:18:29.43 0.21.0M
LTKHP94.5268 P17:18:17.63 0.61.0M
LTKHP94.5268 S17:18:29.78 0.41.0M


  Solution details 

Event:
    Public ID              nkua2025yyci
    Description
      region name: Aegean Sea
Origin:
    Date                   2025-12-21
    Time                  17:18:00.85
    Latitude              38.0505 deg  +/-      0 km
    Longitude             24.0460 deg  +/-      0 km
    Depth                       8 km   +/-    2 km
    Agency                 HA
    Author                 A. Karakonstantis
    Mode                   manual
    Status                 confirmed
    Residual RMS             0.20 s
    Azimuthal gap             132 deg

2 Network magnitudes:
    MLv       1.79 +/- 0.09  13            
    M         1.79           13 preferred  

34 Phase arrivals:
    sta  net   dist azi  phase   time          res     wt  sta
    MRTH  HA    0.1 311  P       17:18:03.65   0.1 M  1.0  MRTH 
    MRTH  HA    0.1 311  S       17:18:05.67  -0.0 M  1.0  MRTH 
    ATHU  HA    0.2 248  P       17:18:05.79   0.1 M  1.0  ATHU 
    ATHU  HA    0.2 248  S       17:18:08.99  -0.3 M  1.0  ATHU 
    GR27B 1Y    0.2  44  P       17:18:05.92   0.1 M  1.0  GR27B
    GR27B 1Y    0.2  44  S       17:18:09.35  -0.2 M  1.0  GR27B
    ATH   HL    0.3 254  P       17:18:06.86   0.4 M  1.0  ATH  
    ATH   HL    0.3 254  S       17:18:10.75  -0.0 M  1.0  ATH  
    NOAC  HL    0.3 254  P       17:18:06.84   0.3 M  1.0  NOAC 
    NOAC  HL    0.3 254  S       17:18:10.75  -0.0 M  1.0  NOAC 
    VLY   HL    0.3 225  P       17:18:06.95   0.3 M  1.0  VLY  
    VLY   HL    0.3 225  S       17:18:10.91  -0.2 M  1.0  VLY  
    ALIO  HA    0.3 273  P       17:18:07.07   0.1 M  1.0  ALIO 
    ALIO  HA    0.3 273  S       17:18:11.36  -0.2 M  1.0  ALIO 
    KARY  HA    0.3  93  P       17:18:07.37   0.2 M  1.0  KARY 
    KARY  HA    0.3  93  S       17:18:11.89  -0.2 M  1.0  KARY 
    ERTR  HA    0.4 330  P       17:18:09.17   0.1 M  1.0  ERTR 
    ERTR  HA    0.4 330  S       17:18:15.07  -0.2 M  1.0  ERTR 
    MDRA  HA    0.5 271  P       17:18:10.04   0.1 M  1.0  MDRA 
    MDRA  HA    0.5 271  S       17:18:16.70  -0.1 M  1.0  MDRA 
    VILL  HA    0.6 281  P       17:18:12.55   0.2 M  1.0  VILL 
    VILL  HA    0.6 281  S       17:18:20.72  -0.4 M  1.0  VILL 
    PSAH  HA    0.6 329  P       17:18:12.55  -0.0 M  1.0  PSAH 
    PSAH  HA    0.6 329  S       17:18:21.53   0.0 M  1.0  PSAH 
    GR26  1Y    0.6 305  P       17:18:12.81   0.0 M  1.0  GR26 
    GR26  1Y    0.6 305  S       17:18:21.37  -0.5 M  1.0  GR26 
    AMPE  HA    0.7 292  P       17:18:14.06   0.4 M  1.0  AMPE 
    AMPE  HA    0.7 292  S       17:18:23.24  -0.2 M  1.0  AMPE 
    MRKA  HA    0.7 331  P       17:18:15.57   0.4 M  1.0  MRKA 
    MRKA  HA    0.7 331  S       17:18:25.98  -0.1 M  1.0  MRKA 
    LOUT  HA    0.8 266  P       17:18:17.17   0.2 M  1.0  LOUT 
    LOUT  HA    0.8 266  S       17:18:29.43   0.2 M  1.0  LOUT 
    LTK   HP    0.9 268  P       17:18:17.63   0.6 M  1.0  LTK  
    LTK   HP    0.9 268  S       17:18:29.78   0.4 M  1.0  LTK  

17 Station magnitudes:
    sta  net   dist azi  type   value   res        amp per
    MRTH  HA    0.1 311  MLv     1.94  0.15    3.40226      
    ATHU  HA    0.2 248  MLv     1.67 -0.13   0.547267      
    GR27B 1Y    0.2  44  MLv     1.52 -0.27   0.602548      
    ATH   HL    0.3 254  MLv     1.70 -0.10    0.70217      
    NOAC  HL    0.3 254  MLv     1.81  0.02    0.90728      
    VLY   HL    0.3 225  MLv     1.87  0.08    0.97736      
    ALIO  HA    0.3 273  MLv     1.75 -0.04   0.681525      
    KARY  HA    0.3  93  MLv     1.76 -0.03   0.630485      
    ERTR  HA    0.4 330  MLv     1.70 -0.09   0.291028      
    MDRA  HA    0.5 271  MLv     1.75 -0.04   0.239068      
    VILL  HA    0.6 281  MLv     1.76 -0.03   0.136346      
    PSAH  HA    0.6 329  MLv     1.87  0.08   0.172849      
    GR26  1Y    0.6 305  MLv     1.79 -0.00   0.141092      
    AMPE  HA    0.7 292  MLv     1.98  0.19   0.204277      
    MRKA  HA    0.7 331  MLv     1.93  0.14   0.164558      
    LOUT  HA    0.8 266  MLv     2.35  0.55   0.375685      
    LTK   HP    0.9 268  MLv     1.56 -0.23   0.233919