Event Number 1643

M2.5 m E of Alum Rock, CA at 2018/10/30 00:12:29 UTC / 2018/10/30 00:12:29 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 8.3km (5.2 mi)
HYPO2K = 15.3km (9.5 mi) Magnitude = 0.1

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2018/10/30 00:12:29  37.358 -121.723  M2.5   6.1 9km E of Alum Rock, CA

EQPROC Summary:

1643 2018Oct30   12 30.62  37.3127 -121.7978 14.37 0.03 19.8 63.7 192  4
MTUMZ SHZ PN 01 2018Oct30   12 35.19 P U0  19.8   0.03
B054  EHZ PB -- 2018Oct30   12 42.62 P D1  70.4  -0.03
B058  EHZ PB -- 2018Oct30   12 41.12 P D3  60.2  -0.04
B057  EHZ PB -- 2018Oct30   12 47.45 P D1 104.4  -0.00

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2018-10-30  0012 30.49  37 17.00  121W52.71  23.40  0.00  3.01  1.71        2.36  2.36E   23.34
                                                                                          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  14.5  Emb  176   9   4   4   0   4                                 3  0.03 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
                                                     2.36      3  0.03 E     52  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 14.5 187 144  PU    35.19  4.70  4.70 0.00  0.00  1.45  W  0.999 0.00 21.0   2.20 E                        
 B058 PB EHZ -- A 59.9 153  99  PD 3  41.12 10.63 10.63 0.00  0.00  0.36  W  1.000 0.00 21.0   2.38 E                        
 B054 PB EHZ -- A 70.0 337  96  PD 1  42.62 12.13 12.13 0.00  0.00  1.09  W  1.000 0.00 21.0 1 2.39 E                        
 B057 PB EHZ -- A102.4 324  93  PD 1  47.45 16.96 16.96 0.00  0.00  1.09  W  0.999 0.00 7.00 4 1.37XE                        

Event Files: October 2018