Errors from USGS Location and Magnitude:
EQPROC = 12.2km (7.6 mi)
HYPO2K = 11.0km (6.8 mi)
Magnitude = 0.1
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/01/09 16:16:41 37.765 -121.938 M2.8 7.7 4 km ESE of San Ramon, CA
EQPROC Summary:
2880 2026Jan 9 1616 42.10 37.8702 -121.8979 2.50 0.01 26.6 70.0 240 4
ADUB1 SHZ PN 01 2026Jan 9 1616 54.72 P D2 69.6 -0.00
B054 EHZ PB -- 2026Jan 9 1616 47.44 P U0 26.6 -0.00
B057 EHZ PB -- 2026Jan 9 1616 53.34 P ?1 61.5 -0.00
B058 EHZ PB -- 2026Jan 9 1617 1.99 P D3 122.2 -0.64
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-01-09 1616 42.80 37 51.680 121W54.102 2.48 0.23 6.04 21.05 2.66 2.66E 2.47
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 238 10 3 4 0 4 - 4 2.68 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
2.66 4 2.68 E 17 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
B054 PB EHZ -- A 26.2 270 91 PU 47.44 4.64 4.74 0.00 -0.10 1.60 W 1.000 0.00 41.0 2.73 E
B057 PB EHZ -- A 61.2 288 90 P 1 53.34 10.54 10.42 0.00 0.12 1.20 W 1.000 0.00 31.0 1 2.57 E
ADUB1PN SHZ 01 A 68.5 186 90 PD 2 54.72 11.92 11.61 0.00 0.31 0.80 W 1.000 0.00 97.0 3.68 E
B058 PB EHZ -- A121.2 166 90 PD 3 61.99 19.19 20.18 0.00 -0.99* 0.40 W 1.000 0.00 29.0 2.57 E