Event Number 1618

M2.6 m W of Concord, CA at 2018/08/14 23:52:34 UTC / 2018/08/14 23:52:34 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 5.0km (3.1 mi)
HYPO2K = 8.5km (5.3 mi) Magnitude = 0.2

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2018/08/14 23:52:34  37.970 -122.031  M2.6  11.3 1km W of Concord, CA

EQPROC Summary:

1618 2018Aug14 2352 35.07  38.0097 -122.0582  3.84 0.10 20.8 77.5 250  5
ADUB1 SHZ PN 01 2018Aug14 2352 50.22 P ?1  85.0   0.10
MTUMZ SHZ PN 01 2018Aug14 2352 51.77 P ?0  96.2  -0.01
B057  EHZ PB -- 2018Aug14 2352 43.31 P U1  44.8  -0.00
B054  EHZ PB -- 2018Aug14 2352 38.98 P D0  20.8  -0.25
B058  EHZ PB -- 2018Aug14 2352 58.01 Pn?3 140.9   0.28

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2018-08-14  2352 36.48  37 57.50  122W 7.77   3.31  0.12  3.08 12.77        2.44  2.44E    3.27
                                                                                          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  12.5  Emb  245   8   2   4   0   5      -                          3  0.11 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
                                                     2.44      3  0.11 E     39  4  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 12.5 210  97  PD    38.98  2.50  2.51 0.00 -0.01  1.14  W  0.999 0.00 33.0   2.44 E                        
 B057 PB EHZ -- A 39.1 282  92  PU 1  43.31  6.83  6.82 0.00  0.01  0.86  W  1.000 0.00 25.0   2.33 E                        
 ADUB1PN SHZ 01 A 80.0 170  90  P  1  50.22 13.74 13.50 0.00  0.24  0.86  W  1.000 0.00 49.0   3.03 E                        
 MTUMZPN SHZ 01 A 91.7 167  90  P     51.77 15.29 15.41 0.00 -0.12  1.14  W  1.000 0.00 5.00 4 0.84XE                        
 B058 PB EHZ -- A137.5 159  90  P  3  58.01 21.53 22.82 0.00 -1.29* 0.00  W  0.000 0.00 1.00 4                               

Event Files: August 2018