Errors from USGS Location and Magnitude:
EQPROC = 4.8km (3.0 mi)
HYPO2K = 4.2km (2.6 mi)
Magnitude = -0.3
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2021/08/08 20:31:23 37.425 -121.669 M2.1 5.0 15km ENE of Alum Rock, CA
EQPROC Summary:
2143 2021Aug 8 2031 24.33 37.3821 -121.6612 4.50 0.04 31.9 48.8 144 5
ADUB1 SHZ PN 01 2021Aug 8 2031 30.38 P U0 31.9 -0.00
RE9A7 EHZ AM 00 2021Aug 8 2031 32.24 P ?1 42.9 -0.00
MTUMZ SHZ PN 01 2021Aug 8 2031 30.55 P U0 32.9 -0.00
B058 EHZ PB -- 2021Aug 8 2031 36.51 P U3 65.1 0.50
B054 EHZ PB -- 2021Aug 8 2031 36.20 P D3 71.3 -0.85
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2021-08-08 2031 24.77 37 23.211 121W40.353 4.51 0.12 1.48 12.32 2.36 2.36E 4.48
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 31.4 Emb 141 9 4 5 0 5 - 2 2.35 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
2.36 2 2.35 E 34 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 31.4 241 94 PU 30.38 5.61 5.58 0.00 0.03 1.54 W 0.757 0.00 27.0 2.36 E
MTUMZPN SHZ 01 A 32.7 218 94 PU 30.55 5.78 5.81 0.00 -0.03 1.54 W 0.696 0.00 11.0 1.50 E
RE9A7AM EHZ 00 A 42.9 31 93 P 1 32.24 7.47 7.46 0.00 0.01 1.15 W 0.999 0.00 5.00 4 0.79XE
B058 PB EHZ -- A 65.7 172 92 PU 3 36.51 11.74 11.16 0.00 0.58* 0.38 W 0.695 0.00 1.00 4
B054 PB EHZ -- A 70.2 319 92 PD 3 36.20 11.43 11.89 0.00 -0.46 0.38 W 0.851 0.00 5.00 4 0.82XE