Event Number 2452

M2.6 m SSW of Antioch, CA - 2023/04/23 20:59:07 37.972 -121.830 M2.6 20.0 4km SSW of Antioch, CA at 2023/04/23 20:59:07 UTC / 2023/04/23 13:59:07 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 46.9km (29.2mi)
HYPO2K = 45.7km (28.4mi) Magnitude = 0.3

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2023/04/23 20:59:07  37.972 -121.830  M2.6  20.0 4km SSW of Antioch, CA

EQPROC Summary:

2452 2023Apr23 2059 10.88  37.7468 -122.2813  1.18 0.00 14.5 59.5 167  4
ADUB1 SHZ PN 01 2023Apr23 2059 22.38 P D0  61.5   0.00
B058  EHZ PB -- 2023Apr23 2059 31.68 P D3 122.1   0.00
B054  EHZ PB -- 2023Apr23 2059 14.41 P D0  14.5  -0.00
B057  EHZ PB -- 2023Apr23 2059 18.73 P D1  40.0  -0.00

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2023-04-23  2059 11.69  37 45.363 122W16.205  1.15  0.08  0.88 10.39        2.29  2.29E    1.14
                                                                                          SOURCE
 NSTA NPHS  DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH  N.XMG-XMMAD-T   N.FMG-FMMAD-T  L F X
    4    4  13.1  Emb  165   7   4   4   0   4      -                          3  1.14 E  W W  

 XMAG2-N.XMG2-XMMAD-T-S  FMAG2-N.FMG2-FMMAD-T-S  PREF.MAG-N.PMAG-PRMAD-T DEPDAT NS ZT TYP
                                                     2.29      3  1.14 E     17  3  M CRH
 REGION=                          

 STA NET COM L CR DIST AZM  AN P/S WT   SEC (TOBS -TCAL -DLY  =RES)  WT   SR  INFO  CAL  DUR-W-FMAG-T -AMP-U-PER-W-XMAG-T DE
 B054 PB EHZ -- A 13.1  28  35  PD    14.41  2.72  2.72 0.00  0.00  1.33  W  0.999 0.00 29.0   2.32 E                        
 B057 PB EHZ -- A 39.8 320  35  PD 1  18.73  7.04  7.05 0.00 -0.01  1.00  W  0.999 0.00 23.0   2.26 E                        
 ADUB1PN SHZ 01 A 62.0 155  35  PD    22.38 10.69 10.67 0.00  0.02  1.33  W  1.000 0.00 56.0   3.14 E                        
 B058 PB EHZ -- A122.5 149  35  PD 3  31.68 19.99 20.50 0.00 -0.51* 0.33  W  1.000 0.00 1.00 4                               

Event Files: April 2023