Event Number 2499

M2.4 km NNE of Alum Rock, CA - 2023/08/02 15:46:35 37.455 -121.775 M2.4 6.3 11 km NNE of Alum Rock, CA at 2023/08/02 15:46:35 UTC / 2023/08/02 08:46:35 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 0.3km (0.2 mi)
HYPO2K = 4.6km (2.9 mi) Magnitude = 0.0

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2023/08/02 15:46:35  37.455 -121.775  M2.4   6.3 11 km NNE of Alum Rock, CA

EQPROC Summary:

2499 2023Aug 2 1546 35.92  37.4521 -121.7762  7.28 0.14 29.0 58.3 206  6
ADUB1 SHZ PN 01 2023Aug 2 1546 41.62 P D0  29.0   0.09
MTUMZ SHZ PN 01 2023Aug 2 1546 42.35 P D0  34.9  -0.17
B054  EHZ PB -- 2023Aug 2 1546 46.54 P U0  58.8  -0.00
B057  EHZ PB -- 2023Aug 2 1546 51.70 P ?2  94.5  -0.39
B058  EHZ PB -- 2023Aug 2 1546 49.49 P ?1  74.5   0.32
B058  EHZ PB -- 2023Aug 2 1546 58.77 S D3  74.5   0.07

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2023-08-02  1546 36.74  37 26.448 121W49.374  7.19  0.16  3.07 15.52        2.40  2.40E    7.16
                                                                                          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  25.6  Emb  198   7   3   4   0   5      -                          4  2.40 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
                                                     2.40      4  2.40 E     33  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
 ADUB1PN SHZ 01 A 25.6 214 102  PD    41.62  4.88  4.72 0.00  0.16  1.07  W  0.999 0.00 48.0   2.88 E                        
 MTUMZPN SHZ 01 A 32.6 192  99  PD    42.35  5.61  5.84 0.00 -0.23  1.07  W  1.000 0.00 17.0   1.92 E                        
 B054 PB EHZ -- A 57.2 325  95  PU    46.54  9.80  9.81 0.00 -0.01  1.07  W  0.999 0.00 21.0   2.19 E                        
 B058 PB EHZ -- A 74.4 163  94  P  1  49.49 12.75 12.59 0.00  0.16  0.80  W  0.999 0.00 3.00 4 0.33XE                        
 B057 PB EHZ -- A 92.3 316  93  P  2  51.70 14.96 15.50 0.00 -0.54* 0.00  W  0.000 0.00 21.0 1 2.23 E                        

Event Files: August 2023