Event Number 1877

M2.5 m NNE of Diablo, CA at 2020/04/20 18:12:08 UTC / 2020/04/20 18:12:08 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 10.4km (6.5 mi)
HYPO2K = 6.6km (4.1 mi) Magnitude = 0.0

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2020/04/20 18:12:08  37.844 -121.955  M2.5  10.7 1km NNE of Diablo, CA

EQPROC Summary:

1877 2020Apr20 1812 10.45  37.8448 -122.0730 14.13 0.00 11.3 43.4 234  4
JCPZ  SHZ PN 01 2020Apr20 1812 17.49 P D2  36.1   0.00
MTUMZ SHZ PN 01 2020Apr20 1812 23.67 P ?3  78.4   0.00
B057  EHZ PB -- 2020Apr20 1812 19.23 P U1  48.0   0.00
B054  EHZ PB -- 2020Apr20 1812 13.85 P U0  11.3  -0.00

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2020-04-20  1812 10.19  37 51.66  122W 1.07  12.96  0.00  2.65  1.44        2.50  2.50E   12.93
                                                                                          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  16.0  Emb  240   6   3   4   0   4                                 3  0.02 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
                                                     2.50      3  0.02 E     36  4  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
 B054 PB EHZ -- A 16.0 270 126  PU    13.85  3.66  3.66 0.00  0.00  1.60  W  0.999 0.00 33.0   2.50 E                        
 JCPZ PN SHZ 01 A 40.5 222 105  PD 2  17.49  7.30  7.30 0.00  0.00  0.80  W  0.999 0.00 29.0   2.52 E                        
 B057 PB EHZ -- A 51.6 292 102  PU 1  19.23  9.04  9.04 0.00  0.00  1.20  W  0.999 0.00 25.0   2.39 E                        
 MTUMZPN SHZ 01 A 79.3 172  98  P  3  23.67 13.48 13.48 0.00  0.00  0.40  W  0.999 0.00 7.00 4 1.19XE                        

Event Files: April 2020