Errors from USGS Location and Magnitude:
EQPROC = 5.4km (3.3 mi)
HYPO2K = 2.4km (1.5 mi)
Magnitude = 0.0
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/01/29 07:55:59 37.371 -121.727 M1.9 6.1 9 km E of Alum Rock, CA
EQPROC Summary:
2892 2026Jan29 756 0.75 37.3405 -121.7738 13.50 0.04 20.9 63.9 197 4
ADUB1 SHZ PN 01 2026Jan29 756 5.38 P U1 20.9 -0.00
B054 EHZ PB -- 2026Jan29 756 12.96 P ?3 68.9 0.32
B057 EHZ PB -- 2026Jan29 756 17.43 P U2 103.5 -0.13
B058 EHZ PB -- 2026Jan29 756 11.79 P D2 62.5 0.09
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-01-29 0756 0.53 37 22.272 121W45.543 13.72 0.25 7.53 16.27 1.86 1.86E 13.70
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 23.9 Emb 200 8 3 4 0 4 - 1 0.00 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
1.86 1 0.00 E 20 3 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 23.9 236 117 PU 1 5.38 4.85 4.83 0.00 0.02 1.50 W 1.000 0.00 16.0 1.86 E
B058 PB EHZ -- A 65.4 165 100 PD 2 11.79 11.26 11.28 0.00 -0.02 1.00 W 1.000 0.00 1.00 4
B054 PB EHZ -- A 66.8 325 100 P 3 12.96 12.43 11.49 0.00 0.94* 0.50 W 1.000 0.00 1.00 4
B057 PB EHZ -- A101.8 316 96 PU 2 17.43 16.90 17.13 0.00 -0.23 1.00 W 1.000 0.00 1.00 4