Errors from USGS Location and Magnitude:
EQPROC = 4.6km (2.8 mi)
HYPO2K = 4.1km (2.5 mi)
Magnitude = -0.4
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2023/05/05 08:09:13 37.799 -121.910 M2.0 16.6 2km S of Blackhawk, CA
EQPROC Summary:
2461 2023May 5 809 14.81 37.8234 -121.9517 14.15 0.00 22.2 48.4 172 4
ADUB1 SHZ PN 01 2023May 5 809 25.94 P D1 64.1 0.00
RE9A7 EHZ AM 00 2023May 5 809 23.70 P ?1 48.7 0.00
B057 EHZ PB -- 2023May 5 809 25.16 P D1 58.7 0.00
B054 EHZ PB -- 2023May 5 809 19.69 P U0 22.3 0.00
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2023-05-05 0809 14.91 37 49.024 121W57.469 16.58 0.00 0.81 2.23 2.39 2.39E 16.56
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 21.8 Emb 169 6 3 4 0 4 3 1.19 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
2.39 3 1.19 E 13 4 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
B054 PB EHZ -- A 21.8 283 125 PU 19.69 4.78 4.78 0.00 -0.00 1.23 W 0.999 0.00 17.0 1.95 E
RE9A7AM EHZ 00 A 49.0 103 107 P 1 23.70 8.79 8.79 0.00 -0.00 0.92 W 1.000 0.00 37.0 2.82 E
B057 PB EHZ -- A 58.3 294 104 PD 1 25.16 10.25 10.25 0.00 0.00 0.92 W 1.000 0.00 5.00 4 0.90XE
ADUB1PN SHZ 01 A 63.3 182 103 PD 1 25.94 11.03 11.03 0.00 -0.00 0.92 W 1.000 0.00 19.0 2.19 E