Event Number 2575

M2.3 km S of San Ramon, CA - 2023/12/15 08:21:15 37.736 -121.988 M2.3 9.6 5 km S of San Ramon, CA at 2023/12/15 08:21:15 UTC / 2023/12/15 00:21:15 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 26.6km (16.6mi)
HYPO2K = 18.6km (11.5mi) Magnitude = 0.0

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2023/12/15 08:21:15  37.736 -121.988  M2.3   9.6 5 km S of San Ramon, CA

EQPROC Summary:

2575 2023Dec15  821 13.22  37.8769 -121.7431  1.50 0.02 40.3 77.1 250  4
ADUB1 SHZ PN 01 2023Dec15  821 26.61 P D0  73.0   0.00
B057  EHZ PB -- 2023Dec15  821 26.86 P D0  74.5   0.00
B054  EHZ PB -- 2023Dec15  821 21.07 P U0  40.3   0.00
B058  EHZ PB -- 2023Dec15  821 34.67 P U3 120.6   0.91

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2023-12-15  0821 15.23  37 50.178 121W49.655  1.47  0.02  3.24  8.35        2.29  2.29E    1.45
                                                                                          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  32.8  Emb  240   6   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 32.8 275  35  PU    21.07  5.84  5.85 0.00 -0.01  1.23  W  0.999 0.00 23.0   2.21 E                        
 ADUB1PN SHZ 01 A 66.7 192  35  PD    26.61 11.38 11.36 0.00  0.02  1.23  W  1.000 0.00 25.0   2.37 E                        
 B057 PB EHZ -- A 68.3 289  35  PD    26.86 11.63 11.61 0.00  0.02  1.23  W  1.000 0.00 21.0 1 2.20 E                        
 B058 PB EHZ -- A117.1 169  35  PU 3  34.67 19.44 19.56 0.00 -0.12  0.31  W  0.999 0.00 1.00 4                               

Event Files: December 2023