Event Number 2185

M2.8 m SE of Hercules, CA - 2021/10/23 13:34:44 37.994 -122.251 M2.8 9.8 4km SE of Hercules, CA at 2021/10/23 13:34:44 UTC / 2021/10/23 06:34:44 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 7.2km (4.5 mi)
HYPO2K = 9.6km (6.0 mi) Magnitude = 0.2

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2021/10/23 13:34:44  37.994 -122.251  M2.8   9.8 4km SE of Hercules, CA

EQPROC Summary:

2185 2021Oct23 1334 44.30  38.0472 -122.2048  3.75 0.22 20.8 62.8 259  5
GLFBZ SHZ PN 01 2021Oct23 1334 56.92 P ?0  67.1   0.60
MTUMZ SHZ PN 01 2021Oct23 1335  2.09 P D0 103.0   0.09
ADUB1 SHZ PN 01 2021Oct23 1335  0.45 P D1  91.1   0.19
B057  EHZ PB -- 2021Oct23 1334 50.14 P U0  31.9  -0.21
B054  EHZ PB -- 2021Oct23 1334 48.46 P U0  20.8  -0.00

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2021-10-23  1334 44.55  38  4.391 122W12.717  3.78  0.32 12.52 24.20        2.61  2.61E    3.77
                                                                                          SOURCE
 NSTA NPHS  DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH  N.XMG-XMMAD-T   N.FMG-FMMAD-T  L F X
    5    5  23.7  Emb  263   6   4   5   0   5      -                          5  0.24 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
                                                     2.61      5  0.24 E     13  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 23.7 177  94  PU    48.46  3.91  4.33 0.00 -0.42  1.05  W  0.999 0.00 47.0   2.85 E                        
 B057 PB EHZ -- A 31.4 261  93  PU    50.14  5.59  5.59 0.00  0.00  1.05  W  0.999 0.00 35.0   2.61 E                        
 GLFBZPN SHZ 01 A 70.0 175  91  P     56.92 12.37 11.86 0.00  0.51* 1.05  W  0.962 0.00 22.0   2.25 E                        
 ADUB1PN SHZ 01 A 93.9 167  91  PD 1  60.45 15.90 15.76 0.00  0.14  0.79  W  0.250 0.00 51.0   3.08 E                        
 MTUMZPN SHZ 01 A105.8 164  90  PD    62.09 17.54 17.70 0.00 -0.16  1.05  W  0.787 0.00 23.0   2.33 E                        

Event Files: October 2021