Event Number 2560

M4.2 km NW of Walker, CA - 2023/10/28 05:40:18 38.555 -119.519 M4.2 2.5 6 km NW of Walker, CA at 2023/10/28 05:40:18 UTC / 2023/10/27 22:40:18 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 9.3km (5.8 mi)
HYPO2K = 12.1km (7.5 mi) Magnitude = 0.2

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2023/10/28 05:40:18  38.555 -119.519  M4.2   2.5 6 km NW of Walker, CA

EQPROC Summary:

2560 2023Oct28  540 21.65  38.5738 -119.6232  8.00 0.29184.8251.2 298  5
RE9A7 EHZ AM 00 2023Oct28  540 51.17 PgU3 184.8   0.24
B054  EHZ PB -- 2023Oct28  540 57.35 P U1 240.8   0.78
B073  EHZ PB -- 2023Oct28  541  4.75 P U3 301.4   0.46
B057  EHZ PB -- 2023Oct28  540 59.87 P U1 266.7  -0.00
B058  EHZ PB -- 2023Oct28  540 59.29 P U1 262.1  -0.00

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2023-10-28  0540 21.01  38 30.849 119W38.581  7.99  0.30 19.56 26.46        3.99  3.99E    7.99
                                                                                          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    5 235.5  Emb  296   7   5   4   0   5      -                          5  1.94 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
                                                     3.99      5  1.94 E      3  0  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
 RE9A7AM EHZ 00 A179.0 241  48  PU 3  51.17 30.16 29.06 0.00  1.10* 0.00  W  0.997 0.00  576 2 5.52 E                        
 B054 PB EHZ -- A235.5 253  48  PU 1  57.35 36.34 35.96 0.00  0.38  1.20  W  0.446 0.00  111   3.99 E                        
 B058 PB EHZ -- A255.9 223  48  PU 1  59.29 38.28 38.45 0.00 -0.17  1.20  W  0.936 0.00  105 1 3.96 E                        
 B057 PB EHZ -- A261.5 259  48  PU 1  59.87 38.86 39.13 0.00 -0.27  1.20  W  0.674 0.00 95.0   3.87 E                        
 B073 PB EHZ -- A294.3 195  48  PU 3  64.75 43.74 43.14 0.00  0.60* 0.40  W  0.944 0.00  113   4.07 E                        

Event Files: October 2023