Earthquake Information
 Origin Time
2025-12-21 03:30:03 (GMT)
 Magnitude
M 1.8
 Latitude
39.9270° N
 Longitude
23.7594° E
 Focal Depth
4 km
 # of Arrivals
13
 Location 55.1 km SW of Kariai
56.7 km SSE of Poliyiros
216.1 km N of Athens
 Solution type
automatic
 Files / Links
QuakeML  GSE2.0  Alert  .phi  
  

  Station data

StationNetDist.(km)Azim.PhaseArr.TimeRes.Wgt.Type
PAIGHT7.1278 P03:30:05.27 -0.11.0A
PLN1HI17.6297 P03:30:06.85 -0.31.0A
OURHT49.1 22 P03:30:12.48 0.21.0A
PLGHL56.2332 P03:30:12.37 -1.21.0A
GR131Y67.9314 P03:30:15.26 -0.21.0A
GR091Y81.8356 P03:30:18.47 0.81.0A
HORTHT93.3323 P03:30:19.20 -0.41.0A
GR181Y95.8257 P03:30:21.01 0.91.0A
KOKKHT101.1 12 P03:30:21.61 0.71.0A
THASHT111.1 47 P03:30:22.67 0.11.0A
GR221Y122.8221 P03:30:24.66 0.41.0A
ANXHP216.9227 P03:30:37.21 0.01.0A
KOSPHC457.0137 P03:31:06.14 -0.81.0A


  Solution details

Event:
    Public ID              nkua2025yxba
    Description
      region name: Aegean Sea
Origin:
    Date                   2025-12-21
    Time                  03:30:03.43  +/-    0.4 s
    Latitude              39.9270 deg  +/-      4 km
    Longitude             23.7594 deg  +/-      4 km
    Depth                       4 km   +/-    7 km
    Agency                 HA
    Mode                   automatic
    Status                 NOT SET
    Residual RMS             0.58 s
    Azimuthal gap              90 deg

2 Network magnitudes:
    MLv       1.83 +/- 0.10   9            
    M         1.83            9 preferred  

13 Phase arrivals:
    sta  net   dist azi  phase   time          res     wt  sta
    PAIG  HT    0.1 278  P       03:30:05.27  -0.1 A  1.0  PAIG 
    PLN1  HI    0.2 297  P       03:30:06.85  -0.3 A  1.0  PLN1 
    OUR   HT    0.4  22  P       03:30:12.48   0.2 A  1.0  OUR  
    PLG   HL    0.5 332  P       03:30:12.37  -1.2 A  1.0  PLG  
    GR13  1Y    0.6 314  P       03:30:15.26  -0.2 A  1.0  GR13 
    GR09  1Y    0.7 356  P       03:30:18.47   0.8 A  1.0  GR09 
    HORT  HT    0.8 323  P       03:30:19.20  -0.4 A  1.0  HORT 
    GR18  1Y    0.9 257  P       03:30:21.01   0.9 A  1.0  GR18 
    KOKK  HT    0.9  12  P       03:30:21.61   0.7 A  1.0  KOKK 
    THAS  HT    1.0  47  P       03:30:22.67   0.1 A  1.0  THAS 
    GR22  1Y    1.1 221  P       03:30:24.66   0.4 A  1.0  GR22 
    ANX   HP    2.0 227  P       03:30:37.21  -0.0 A  1.0  ANX  
    KOSP  HC    4.1 137  P       03:31:06.14  -0.8 A  1.0  KOSP 

11 Station magnitudes:
    sta  net   dist azi  type   value   res        amp per
    PAIG  HT    0.1 278  MLv    -0.00 -1.83   0.0400192      
    PLN1  HI    0.2 297  MLv     1.90  0.08     2.3188      
    OUR   HT    0.4  22  MLv     1.67 -0.16   0.223812      
    PLG   HL    0.5 332  MLv     1.77 -0.06   0.182923      
    GR13  1Y    0.6 314  MLv     1.80 -0.03   0.143525      
    GR09  1Y    0.7 356  MLv     2.01  0.18   0.198299      
    HORT  HT    0.8 323  MLv     1.79 -0.03   0.072099      
    GR18  1Y    0.9 257  MLv     1.90  0.07    0.13171      
    KOKK  HT    0.9  12  MLv     1.91  0.08   0.126762      
    THAS  HT    1.0  47  MLv     2.09  0.26   0.170548      
    GR22  1Y    1.1 221  MLv     1.70 -0.13   0.0611536