Event Number 1565

M3.9 m NNE of Alum Rock, CA at 2018/04/16 16:39:26 UTC / 2018/04/16 16:39:26 PDT

Error Map and Stations Used to Locate Event


   






Errors from USGS Location and Magnitude:

EQPROC =  3.0km (1.9 mi)

HYPO2K =  0.7km (0.4 mi)
Magnitude = 0.3


USGS Report:


Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2018/04/16 16:39:26  37.433 -121.776  M3.9   8.3 9km NNE of Alum Rock, CA



EQPROC Summary:


1565 2018Apr16 1639 26.27  37.4062 -121.7708 22.07 0.19 25.6 71.0 135  8
ADUB1 SHZ PN 01 2018Apr16 1639 32.10 P D0  25.6   0.03
MTUMZ SHZ PN 01 2018Apr16 1639 32.66 P U0  30.3  -0.01
CMP   SHZ PN 07 2018Apr16 1639 34.03 P U0  40.3  -0.00
LCGPZ SHZ PN 01 2018Apr16 1639 33.80 P D0  42.7  -0.56
B058  EHZ PB -- 2018Apr16 1639 39.12 PgD0  69.5   0.93
B054  EHZ PB -- 2018Apr16 1639 37.37 P U0  63.1   0.11
B057  EHZ PB -- 2018Apr16 1639 42.41 PgU0  98.4   0.03
B073  EHZ PB -- 2018Apr16 1639 57.54 PgU0 198.6   0.55



HYPO2K Report:


 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2018-04-16  1639 26.50  37 26.04  121W46.94  15.80  0.22  1.03  4.85        3.60  3.60E   15.76
                                                                                          SOURCE
 NSTA NPHS  DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH  N.XMG-XMMAD-T   N.FMG-FMMAD-T  L F X
    8    8  27.1  Emb  138   6   8   8   0   8                                 7  0.08 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
                                                     3.60      7  0.08 E     46  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 27.1 221 118  PD    32.10  5.60  5.44 0.00  0.16  1.12  W  0.500 0.00  313 3 4.78 E                        
 MTUMZPN SHZ 01 A 32.8 199 113  PU    32.66  6.16  6.27 0.00 -0.11  1.12  W  0.363 0.00 70.0   3.37 E                        
 LCGPZPN SHZ 01 A 41.2 280 109  PD    33.80  7.30  7.54 0.00 -0.24  1.12  W  0.322 0.00  141   4.09 E                        
 CMP  PN SHZ 07 A 41.9 101 108  PU    34.03  7.53  7.66 0.00 -0.13  1.12  W  0.930 0.00 65.0 4 3.34XE                        
 B054 PB EHZ -- A 59.9 323 103  PU    37.37 10.87 10.47 0.00  0.40  1.12  W  0.423 0.00 91.0   3.69 E                        
 B058 PB EHZ -- A 72.7 165 101  PD    39.12 12.62 12.49 0.00  0.13  1.12  W  0.732 0.00 77.0   3.54 E                        
 B057 PB EHZ -- A 95.4 314  98  PU    42.41 15.91 16.14 0.00 -0.23  1.12  W  0.491 0.00 81.0   3.61 E                        
 B073 PB EHZ -- A202.4 144  48  PU    57.54 31.04 31.07 0.00 -0.03  0.15  W  0.235 0.00 69.0 1 3.58 E                        



Event Files: April 2018