Event Number 2866

M3.4 km NE of San Lucas, CA - 2025/12/20 07:51:35 36.238 -120.832 M3.4 6.5 21 km NE of San Lucas, CA at 2025/12/20 07:51:35 UTC / 2025/12/19 23:51:35 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 37.5km (23.3mi)
HYPO2K = 41.4km (25.7mi) Magnitude = 0.1

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2025/12/20 07:51:35  36.238 -120.832  M3.4   6.5 21 km NE of San Lucas, CA

EQPROC Summary:

2866 2025Dec20  751 35.32  36.3647 -120.4448 26.50 0.31 46.5151.9 213  8
ATZ   SHZ PN 01 2025Dec20  751 56.59 P ?0 145.3   0.01
RE9A7 EHZ AM 00 2025Dec20  752  0.10 P D0 172.9   0.01
ADUB1 SHZ PN 01 2025Dec20  752  0.37 P D3 167.3   0.99
GLFBZ SHZ PN 01 2025Dec20  752  6.74 PgU1 192.6   1.55
B073  EHZ PB -- 2025Dec20  751 44.01 P D0  46.5   0.00
B058  EHZ PB -- 2025Dec20  751 50.51 PnU0 111.3  -1.74
B057  EHZ PB -- 2025Dec20  752 12.48 Pn?3 263.0   0.91
B054  EHZ PB -- 2025Dec20  752  8.58 PnU0 227.1   1.58

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2025-12-20  0751 33.96  36 29.220 120W29.919  0.08  0.65  6.00 29.10        3.28  3.28E    0.03
                                                                                          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  60.0  Emb  207  13   6   7   0   8      #                          5  1.25 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
                                                     3.28      5  1.25 E     53  1  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
 B073 PB EHZ -- A 60.0 177  27  PD    44.01 10.05 10.67 0.00 -0.62* 1.27  W  0.999 0.00 65.0   3.28 E                        
 B058 PB EHZ -- A102.8 291  27  PU    50.51 16.55 17.63 0.00 -1.08* 1.27  W  0.523 0.00 55.0   3.17 E                        
 ATZ  PN SHZ 01 A136.4 294  27  P     56.59 22.63 23.09 0.00 -0.46  1.27  W  0.462 0.00  218   4.53 E                        
 ADUB1PN SHZ 01 A156.8 304  27  PD 3  60.37 26.41 26.40 0.00  0.01  0.32  W  0.021 0.00  146 3 4.17 E                        
 RE9A7AM EHZ 00 A158.9 330  27  PD    60.10 26.14 26.75 0.00 -0.61* 1.27  W  0.992 0.00 3.00 4 0.42XE                        
 GLFBZPN SHZ 01 A181.5 307  24  PU 1  66.74 32.78 30.37 0.00  2.41* 0.00  W  0.000 0.00 11.0 4 1.70XE                        
 B054 PB EHZ -- A214.6 316  20  PU    68.58 34.62 34.54 0.00  0.08  1.27  W  0.941 0.00 33.0 2 2.80 E                        
 B057 PB EHZ -- A250.7 314  20  P  3  72.48 38.52 38.96 0.00 -0.44  0.32  W  0.058 0.00 3.00 4 0.52XE                        

Event Files: December 2025