Errors from USGS Location and Magnitude:
EQPROC = 7.3km (4.6 mi)
HYPO2K = 16.7km (10.4mi)
Magnitude = -0.6
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/01/30 01:03:25 37.469 -121.591 M2.4 8.1 24 km ENE of Alum Rock, CA
EQPROC Summary:
2893 2026Jan30 103 27.16 37.4596 -121.6732 17.00 0.05 35.9 68.7 220 4
ADUB1 SHZ PN 01 2026Jan30 103 34.04 P ?3 35.9 -0.09
B054 EHZ PB -- 2026Jan30 103 38.33 P D0 64.3 0.07
B057 EHZ PB -- 2026Jan30 103 43.34 P D1 100.9 0.00
B058 EHZ PB -- 2026Jan30 103 39.61 P U2 73.8 -0.03
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-01-30 0103 26.94 37 25.124 121W46.575 34.63 0.00 2.95 2.68 2.95 2.95E 34.61
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 26.2 Emb 202 9 3 4 0 4 3 1.47 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
2.95 3 1.47 E 15 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 26.2 224 139 P 3 34.04 7.10 7.10 0.00 0.00 0.40 W 0.999 0.00 50.0 3.27 E
B054 PB EHZ -- A 61.6 323 114 PD 38.33 11.39 11.39 0.00 0.00 1.60 W 1.000 0.00 23.0 2.63 E
B058 PB EHZ -- A 70.9 165 110 PU 2 39.61 12.67 12.67 0.00 0.00 0.80 W 1.000 0.00 21.0 1 2.55 E
B057 PB EHZ -- A 97.0 315 103 PD 1 43.34 16.40 16.40 0.00 0.00 1.20 W 1.000 0.00 5.00 4 1.19XE