Event Number 1878

M2.0 km ESE of Alum Rock, CA at 2020/05/03 00:07:35 UTC / 2020/05/03 00:07:35 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 42.9km (26.7mi)
HYPO2K = 47.0km (29.2mi) Magnitude = 0.3

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2020/05/03 00:07:35  37.326 -121.689  M2.0   6.7 13km ESE of Alum Rock, CA

EQPROC Summary:

1878 2020May 3    7 36.09  37.1052 -122.0857 15.50 0.08 17.5 67.2 210  4
MTUMZ SHZ PN 01 2020May 3    7 40.39 P D0  17.5  -0.00
B057  EHZ PB -- 2020May 3    7 53.75 P ?1 110.9   0.11
B058  EHZ PB -- 2020May 3    7 45.93 P D3  56.0  -0.04
B054  EHZ PB -- 2020May 3    7 49.09 P ?3  84.5  -1.04

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2020-05-03  0007 35.65  37  6.88  122W 8.62  15.18  0.15  9.29  7.33        1.67  1.67E   15.13
                                                                                          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  22.3  Emb  216   6   2   4   0   4      -                          1  0.00 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
                                                     1.67      1  0.00 E     52  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
 MTUMZPN SHZ 01 A 22.3  78 122  PD    40.39  4.74  4.71 0.00  0.03  1.78  W  0.999 0.00 13.0   1.67 E                        
 B058 PB EHZ -- A 61.1 124 102  PD 3  45.93 10.28 10.64 0.00 -0.36  0.44  W  1.000 0.00 1.00 4                               
 B054 PB EHZ -- A 82.9 357  99  P  3  49.09 13.44 14.11 0.00 -0.67* 0.44  W  1.000 0.00 3.00 4 0.41XE                        
 B057 PB EHZ -- A107.9 340  66  P  1  53.75 18.10 18.07 0.00  0.03  1.33  W  1.000 0.00 3.00 4 0.44XE                        

Event Files: May 2020