Event Number 515

M1.8 m W of Portola Valley, California at 2014/04/17 10:07:50 UTC / 2014/04/17 10:07:50 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 2.2km (1.4 mi)
HYPO2K = 2.2km (1.4 mi) Magnitude = -0.1

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2014/04/17 10:07:50  37.381 -122.259  M1.8   4.4 2km W of Portola Valley, California

EQPROC Summary:

515 2014Apr17 1007 50.70  37.4012 -122.2604  3.00 0.15 10.8 37.6 214  5
LCGPZ SHZ PN 01 2014Apr17 1007 53.26 P U1  10.8  -0.00
ADUB1 SHZ PN 01 2014Apr17 1007 56.53 P ?0  30.1  -0.00
JCPZ  SHZ PN 08 2014Apr17 1007 55.08 P D0  21.5  -0.00
B054  EHZ PB -- 2014Apr17 1008  0.82 P ?1  51.3   0.69
B057  EHZ PB -- 2014Apr17 1008  3.93 P ?2  74.6  -0.15

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH   RMS   ERH   ERZ  XMAG1 FMAG1 PMAG
 2014-04-17  1007 51.04  37 23.02  122W17.01   2.87  0.31  5.93 24.18        1.91  1.91E
                                                                                          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  13.1  Emb  222   9   2   5   0   5      -                          3  0.37 E  W W  

 XMAG2-N.XMG2-XMMAD-T-S  FMAG2-N.FMG2-FMMAD-T-S  PREF.MAG-N.PMAG-PRMAD-T
                                                     1.91      3  0.37 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
 LCGPZPN SHZ 01 A 13.1  16  94  PU 1  53.26  2.22  2.60 0.00 -0.38  0.94  W  0.832 0.00 13.0   1.54 E                        
 JCPZ PN SHZ 08 A 23.0 352  92  PD    55.08  4.04  4.21 0.00 -0.17  1.25  W  0.750 0.00 47.0   2.84 E                        
 ADUB1PN SHZ 01 A 30.9 119  91  P     56.53  5.49  5.48 0.00  0.01  1.25  W  0.999 0.00 17.0   1.91 E                        
 B054 PB EHZ -- A 53.4   7  90  P  1  60.82  9.78  9.16 0.00  0.62* 0.94  W  0.956 0.00 3.00 4 0.31XE                        
 B057 PB EHZ -- A 75.6 341  90  P  2  63.93 12.89 12.76 0.00  0.13  0.62  W  0.461 0.00 1.00 4                               

Event Files: April 2014