Errors from USGS Location and Magnitude:
EQPROC = 3.3km (2.0 mi)
HYPO2K = 4.3km (2.7 mi)
Magnitude = 0.1
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2026/02/03 07:47:33 37.756 -121.941 M2.7 4.6 4 km SE of San Ramon, CA
EQPROC Summary:
2907 2026Feb 3 747 34.03 37.7847 -121.9489 4.75 0.04 23.7 66.0 227 5
GLFBZ SHZ PN 01 2026Feb 3 747 41.76 P ?1 41.8 0.00
ATZ SHZ PN 01 2026Feb 3 747 49.77 P D1 89.7 0.06
B057 EHZ PB -- 2026Feb 3 747 45.00 P U0 60.7 0.03
B054 EHZ PB -- 2026Feb 3 747 38.65 P U0 23.7 -0.04
B058 EHZ PB -- 2026Feb 3 747 54.05 PgD2 114.2 0.77
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2026-02-03 0747 35.00 37 46.190 121W59.767 2.38 0.13 2.85 13.09 2.60 2.60E 2.36
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 20.5 Emb 220 5 4 5 0 5 - 4 2.60 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
2.60 4 2.60 E 11 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
B054 PB EHZ -- A 20.5 300 91 PU 38.65 3.65 3.81 0.00 -0.16 1.25 W 0.999 0.00 37.0 2.60 E
GLFBZPN SHZ 01 A 38.6 201 90 P 1 41.76 6.76 6.74 0.00 0.02 0.94 W 0.919 0.00 33.0 2.60 E
B057 PB EHZ -- A 57.7 300 90 PU 45.00 10.00 9.84 0.00 0.16 1.25 W 0.999 0.00 27.0 2.43 E
ATZ PN SHZ 01 A 88.3 174 90 PD 1 49.77 14.77 14.82 0.00 -0.05 0.94 W 0.515 0.00 99.0 3.72 E
B058 PB EHZ -- A113.8 160 90 PD 2 54.05 19.05 18.97 0.00 0.08 0.62 W 0.564 0.00 1.00 4