Errors from USGS Location and Magnitude:
EQPROC = 11.4km (7.1 mi)
HYPO2K = 9.7km (6.0 mi)
Magnitude = -0.2
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/10/03 20:45:59 37.359 -121.720 M2.4 5.6 9 km E of Alum Rock, CA
EQPROC Summary:
3030 2026Oct 3 2046 0.15 37.3022 -121.8272 21.83 0.07 14.8 53.2 187 5
MTUMZ SHZ PN 01 2026Oct 3 2046 4.77 P U0 17.7 -0.25
ADUB1 SHZ PN 01 2026Oct 3 2046 4.74 P U0 14.8 0.00
B058 EHZ PB -- 2026Oct 3 2046 10.69 P D1 59.9 0.00
B054 EHZ PB -- 2026Oct 3 2046 12.07 P U1 70.2 0.00
B057 EHZ PB -- 2026Oct 3 2046 17.02 PgD1 103.6 0.00
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-10-03 2045 59.97 37 18.561 121W48.742 21.52 0.10 6.88 5.89 2.56 2.56E 21.48
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 16.4 Emb 188 5 5 5 0 5 - 4 2.56 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
2.56 4 2.56 E 41 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
ADUB1PN SHZ 01 A 16.4 246 137 PU 64.74 4.77 4.66 0.00 0.11 1.32 W 0.744 0.00 45.0 2.92 E
MTUMZPN SHZ 01 A 18.9 204 132 PU 64.77 4.80 4.93 0.00 -0.13 1.32 W 0.675 0.00 21.0 2.20 E
B058 PB EHZ -- A 60.2 159 94 PD 1 70.69 10.72 10.65 0.00 0.07 0.99 W 0.945 0.00 21.0 2.35 E
B054 PB EHZ -- A 70.0 331 93 PU 1 72.07 12.10 12.12 0.00 -0.02 0.98 W 0.992 0.00 23.0 1 2.45 E
B057 PB EHZ -- A103.8 321 91 PD 1 77.02 17.05 17.15 0.00 -0.10 0.39 W 0.642 0.00 7.00 4 1.34XE