Event Number 2541

M2.2 km NNE of Foster City, CA - 2023/09/26 04:30:50 37.632 -122.219 M2.2 8.5 9 km NNE of Foster City, CA at 2023/09/26 04:30:50 UTC / 2023/09/25 21:30:50 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 3.8km (2.4 mi)
HYPO2K = 2.6km (1.6 mi) Magnitude = 0.4

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2023/09/26 04:30:50  37.632 -122.219  M2.2   8.5 9 km NNE of Foster City, CA

EQPROC Summary:

2541 2023Sep26  430 50.26  37.6319 -122.2621  3.00 0.00 15.1 50.7 156  4
LCGPZ SHZ PN 01 2023Sep26  430 53.56 P D2  15.1   0.00
B054  EHZ PB -- 2023Sep26  430 55.40 P D0  26.0   0.00
B057  EHZ PB -- 2023Sep26  430 59.72 P D0  51.5   0.00
B058  EHZ PB -- 2023Sep26  431  9.30 P ?3 110.3   0.14

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2023-09-26  0430 50.74  37 37.822 122W14.841  3.00  0.05  0.94  8.78        1.80  1.80E    2.98
                                                                                          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  14.8  Emb  151   8   3   4   0   4      -                          3  0.77 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
                                                     1.80      3  0.77 E     14  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
 LCGPZPN SHZ 01 A 14.8 177  94  PD 2  53.56  2.82  2.89 0.00 -0.07  0.73  W  1.000 0.00 13.0 1 1.55 E                        
 B054 PB EHZ -- A 25.9   9  92  PD    55.40  4.66  4.68 0.00 -0.02  1.45  W  0.999 0.00 19.0   1.99 E                        
 B057 PB EHZ -- A 52.2 328  91  PD    59.72  8.98  8.97 0.00  0.01  1.45  W  0.999 0.00 17.0   1.98 E                        
 B058 PB EHZ -- A109.6 147  90  P  3  69.30 18.56 18.28 0.00  0.28  0.36  W  1.000 0.00 1.00 4                               

Event Files: September 2023