Event Number 1767

M2.7 km E of Alum Rock, CA at 2019/08/08 20:31:33 UTC / 2019/08/08 20:31:33 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 6.1km (3.8 mi)
HYPO2K = 8.1km (5.0 mi) Magnitude = -0.0

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2019/08/08 20:31:33  37.347 -121.594  M2.7   7.3 21km E of Alum Rock, CA

EQPROC Summary:

1767 2019Aug 8 2031 33.52  37.2932 -121.5800 20.50 0.05 32.1 67.6 282  4
MTUMZ SHZ PN 01 2019Aug 8 2031 40.00 P U0  32.1  -0.07
ADUB1 SHZ PN 01 2019Aug 8 2031 40.57 P D0  35.7   0.00
B057  EHZ PB -- 2019Aug 8 2031 52.29 P D3 119.3   0.50
B054  EHZ PB -- 2019Aug 8 2031 47.26 P D0  83.4   0.04

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2019-08-08  2031 32.77  37 18.20  121W31.35  20.55  0.05  4.59  9.12        2.74  2.74E   20.50
                                                                                          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  37.2  Emb  287   6   4   4   0   4      -                          3  0.35 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
                                                     2.74      3  0.35 E     51  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 37.2 244 105  PU    40.00  7.23  7.24 0.00 -0.01  1.23  W  0.999 0.00 23.0   2.39 E                        
 ADUB1PN SHZ 01 A 41.1 262 101  PD    40.57  7.80  7.79 0.00  0.01  1.23  W  0.999 0.00 52.0   3.19 E                        
 B054 PB EHZ -- A 86.0 317  90  PD    47.26 14.49 14.48 0.00  0.01  1.23  W  0.999 0.00 31.0   2.74 E                        
 B057 PB EHZ -- A122.2 312  90  PD 3  52.29 19.52 19.88 0.00 -0.36  0.31  W  0.999 0.00 13.0 4 1.94XE                        

Event Files: August 2019