Event Number 750

M2.3 m S of Concord, California at 2015/05/04 01:54:00 UTC / 2015/05/04 01:54:00 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 24.5km (15.2mi)
HYPO2K = 25.9km (16.1mi) Magnitude = -0.1

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2015/05/04 01:54:00  37.966 -122.031  M2.3  11.8 1km S of Concord, California

EQPROC Summary:

750 2015May 4  154  3.31  37.8727 -122.2831  1.51 0.15  7.5 40.2 152  5
JCPZ  SHZ PN 08 2015May 4  154  9.97 P ?3  31.8   0.26
CBS   SHZ PN 07 2015May 4  154 14.33 P U0  57.0   0.35
ADUB1 SHZ PN 01 2015May 4  154 16.37 P U2  74.5  -0.57
B054  EHZ PB -- 2015May 4  154  5.18 P D0   7.5  -0.04
B057  EHZ PB -- 2015May 4  154  9.45 P U1  30.3   0.00

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH   RMS   ERH   ERZ  XMAG1 FMAG1 PMAG
 2015-05-04  0154  4.00  37 51.75  122W17.20   1.50  0.47  3.59 39.34        2.37  2.37E
                                                                                          SOURCE
 NSTA NPHS  DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH  N.XMG-XMMAD-T   N.FMG-FMMAD-T  L F X
    5    5   7.7  Emb  144   6   4   5   0   5      -                          5  0.46 E  W W  

 XMAG2-N.XMG2-XMMAD-T-S  FMAG2-N.FMG2-FMMAD-T-S  PREF.MAG-N.PMAG-PRMAD-T
                                                     2.37      5  0.46 E
 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  7.7  91  35  PD     5.18  1.18  1.75 0.00 -0.57* 1.43  W  0.524 0.00 21.0   1.97 E                        
 B057 PB EHZ -- A 30.6 307  35  PU 1   9.45  5.45  5.47 0.00 -0.02  1.07  W  0.999 0.00 17.0   1.91 E                        
 JCPZ PN SHZ 08 A 30.6 187  35  P  3   9.97  5.97  5.47 0.00  0.50  0.36  W  0.956 0.00 71.0   3.29 E                        
 CBS  PN SHZ 07 A 57.0  94  35  PU    14.33 10.33  9.78 0.00  0.55* 1.43  W  0.523 0.00 47.0   2.96 E                        
 ADUB1PN SHZ 01 A 73.4 158  35  PU 2  16.37 12.37 12.44 0.00 -0.07  0.71  W  0.996 0.00 25.0   2.37 E                        

Event Files: May 2015