Event Number 1925

M3.0 m NE of Alum Rock, CA - 2020/08/02 12:40:24 37.408 -121.755 M3.0 9.0 8km NE of Alum Rock, CA at 2020/08/02 12:40:24 UTC / 2020/08/02 12:40:24 PDT

Error Map and Stations Used to Locate Event


   
   





Errors from USGS Location and Magnitude:

EQPROC =  4.1km (2.6 mi)

HYPO2K =  5.2km (3.2 mi)
Magnitude = -0.0


USGS Report:


Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2020/08/02 12:40:24  37.408 -121.755  M3.0   9.0 8km NE of Alum Rock, CA



EQPROC Summary:


1925 2020Aug 2 1240 24.59  37.3942 -121.7981 12.64 0.13 22.9 68.5 101  9
LCGPZ SHZ PN 01 2020Aug 2 1240 31.92 P U0  40.7  -0.40
ADUB1 SHZ PN 01 2020Aug 2 1240 29.76 P D0  22.9   0.31
MTUMZ SHZ PN 01 2020Aug 2 1240 30.18 P U0  28.2  -0.10
ATZ   SHZ PN 01 2020Aug 2 1240 33.37 P D0  47.1   0.00
RE9A7 EHZ AM 00 2020Aug 2 1240 33.66 P D0  49.1   0.00
B073  EHZ PB -- 2020Aug 2 1240 54.93 P U3 198.9   1.27
B057  EHZ PB -- 2020Aug 2 1240 40.71 P U2  97.7  -0.04
B054  EHZ PB -- 2020Aug 2 1240 35.67 P U0  62.7   0.02
B058  EHZ PB -- 2020Aug 2 1240 36.47 P D1  68.8  -0.07



HYPO2K Report:


 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2020-08-02  1240 24.60  37 23.64  121W48.79  18.91  0.16  0.78  1.40        3.02  3.02E   18.89
                                                                                          SOURCE
 NSTA NPHS  DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH  N.XMG-XMMAD-T   N.FMG-FMMAD-T  L F X
    9    9  22.0  Emb  118   5   9   8   0   9                                 8  0.16 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
                                                     3.02      8  0.16 E     24  5  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
 ADUB1PN SHZ 01 A 22.0 223 129  PD    29.76  5.16  5.03 0.00  0.13  1.10  W  0.365 0.00 79.0   3.46 E                        
 MTUMZPN SHZ 01 A 27.7 196 122  PU    30.18  5.58  5.79 0.00 -0.21  1.10  W  0.347 0.00 39.0   2.82 E                        
 LCGPZPN SHZ 01 A 39.5 287 113  PU    31.92  7.32  7.48 0.00 -0.16  1.10  W  0.442 0.00 41.0   2.94 E                        
 ATZ  PN SHZ 01 A 46.8 190 110  PD    33.37  8.77  8.57 0.00  0.20  1.10  W  0.333 0.00  105   3.85 E                        
 RE9A7AM EHZ 00 A 50.0  44 109  PD    33.66  9.06  9.06 0.00  0.00  1.10  W  0.933 0.00  116   3.95 E                        
 B054 PB EHZ -- A 62.0 327 105  PU    35.67 11.07 10.92 0.00  0.15  1.10  W  0.453 0.00 47.0   3.09 E                        
 B058 PB EHZ -- A 69.1 162  66  PD 1  36.47 11.87 12.03 0.00 -0.16  0.83  W  0.751 0.00 39.0   2.92 E                        
 B057 PB EHZ -- A 96.7 317  66  PU 2  40.71 16.11 16.14 0.00 -0.03  0.55  W  0.372 0.00 37.0   2.90 E                        
 B073 PB EHZ -- A200.4 142  48  PU 3  54.93 30.33 30.50 0.00 -0.17  0.00  W  0.000 0.00 1.00 4