Event Number 228

M2.5 10 km ( 6 mi) ESE of Alum Rock, CA at 2013/02/03 16:51:46 UTC / 2013/02/03 16:51:46 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 2.3km (1.4 mi)
HYPO2K = 1.8km (1.1 mi) Magnitude = -0.5

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2013/02/03 16:51:46  37.344 -121.712  M2.5    7.1  10 km (  6 mi) ESE of Alum Rock, CA

EQPROC Summary:

228 2013Feb 3 1651 46.86  37.3635 -121.7040  7.75 0.06 27.6 59.5 181  6
ADUB1 SHZ PN 01 2013Feb 3 1651 52.24 P D0  27.6  -0.00
COS   SHZ PN 07 2013Feb 3 1651 53.20 P U3  33.3   0.00
JCPZ  SHZ PN 08 2013Feb 3 1651 57.12 P U3  60.1  -0.60
B057  EHZ PB -- 2013Feb 3 1652  4.68 P D2 105.9   0.05
B054  EHZ PB -- 2013Feb 3 1651 59.60 P D2  70.4   0.14
B058  EHZ PB -- 2013Feb 3 1651 57.79 P D0  63.6  -0.52

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH   RMS   ERH   ERZ  XMAG1 FMAG1 PMAG
 2013-02-03  1651 46.85  37 21.63  121 42.34  14.56  0.03  0.76  1.34        2.98  2.98E
                                                                                          SOURCE
 NSTA NPHS  DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH  N.XMG-XMMAD-T   N.FMG-FMMAD-T  L F X
    6    6  27.4  Emb  109   7   6   5   0   6                                 4  0.46 E  W W  

 XMAG2-N.XMG2-XMMAD-T-S  FMAG2-N.FMG2-FMMAD-T-S  PREF.MAG-N.PMAG-PRMAD-T
                                                     2.98      4  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
 ADUB1PN SHZ 01 A 27.4 243 115  PD    52.24  5.39  5.39 0.00  0.00  1.67  W  0.957 0.00 37.0   2.70 E                        
 COS  PN SHZ 07 A 33.6  60 111  PU 3  53.20  6.35  6.32 0.00  0.03  0.42  W  0.964 0.00  107   3.76 E                        
 JCPZ PN SHZ 08 A 60.2 296 102  PU 3  57.12 10.27 10.47 0.00 -0.20  0.42  W  0.121 0.00 59.0   3.25 E                        
 B058 PB EHZ -- A 63.2 169 101  PD    57.79 10.94 10.95 0.00 -0.01  1.67  W  0.988 0.00 23.0   2.35 E                        
 B054 PB EHZ -- A 70.6 322 100  PD 2  59.60 12.75 12.12 0.00  0.63* 0.00  W  0.000 0.00 7.00 4 1.21XE                        
 B057 PB EHZ -- A106.0 315  66  PD 2  64.68 17.83 17.81 0.00  0.02  0.83  W  0.967 0.00 3.00 4 0.43XE                        

Event Files: Febuary 2013