Event Number 2823

M2.6 km ESE of Woodside, CA - 2025/10/23 23:45:00 37.427 -122.245 M2.6 5.2 1 km ESE of Woodside, CA at 2025/10/23 23:45:00 UTC / 2025/10/23 16:45:00 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 5.0km (3.1 mi)
HYPO2K = 1.7km (1.0 mi) Magnitude = -0.2

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2025/10/23 23:45:00  37.427 -122.245  M2.6   5.2 1 km ESE of Woodside, CA

EQPROC Summary:

2823 2025Oct23 2345  0.13  37.3910 -122.2791  2.93 0.03 12.3 48.6 203  5
LCGPZ SHZ PN 01 2025Oct23 2345  2.95 P D0  12.2  -0.00
GLFBZ SHZ PN 01 2025Oct23 2345  3.04 P D0  12.8  -0.00
B054  EHZ PB -- 2025Oct23 2345  9.90 P D1  52.6   0.11
B058  EHZ PB -- 2025Oct23 2345 16.38 P ?3  90.1   0.29
B057  EHZ PB -- 2025Oct23 2345 13.60 P ?1  75.1  -0.00

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2025-10-23  2345  1.04  37 24.709 122W14.794  1.48  0.13  4.53 13.56        2.81  2.81E    1.47
                                                                                          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   9.2  Emb  272   7   3   4   0   5      -                          4  2.81 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
                                                     2.81      4  2.81 E     11  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
 GLFBZPN SHZ 01 A  9.2  66  35  PD     3.04  2.00  2.01 0.00 -0.01  1.52  W  0.999 0.00 55.0 1 2.91 E                        
 LCGPZPN SHZ 01 A  9.5   3  35  PD     2.95  1.91  2.05 0.00 -0.14  1.52  W  0.612 0.00 44.0 1 2.70 E                        
 B054 PB EHZ -- A 49.9   4  35  PD 1   9.90  8.86  8.63 0.00  0.23  1.14  W  0.455 0.00 33.0   2.62 E                        
 B057 PB EHZ -- A 73.9 338  35  P  1  13.60 12.56 12.52 0.00  0.04  0.74  W  0.986 0.00 27.0   2.45 E                        
 B058 PB EHZ -- A 90.1 138  35  P  3  16.38 15.34 15.16 0.00  0.18  0.07  W  0.945 0.00 1.00 4                               

Event Files: October 2025