Errors from USGS Location and Magnitude:
EQPROC = 3.8km (2.4 mi)
HYPO2K = 5.3km (3.3 mi)
Magnitude = -0.3
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2025/12/08 10:33:41 37.756 -121.940 M2.9 8.5 4 km SE of San Ramon, CA
EQPROC Summary:
2847 2025Dec 8 1033 42.56 37.7727 -121.9781 12.76 0.13 21.8 61.6 159 7
GLFBZ SHZ PN 01 2025Dec 8 1033 49.68 P ?1 39.5 -0.41
RE9A7 EHZ AM 00 2025Dec 8 1033 51.75 P D0 50.0 0.00
ADUB1 SHZ PN 01 2025Dec 8 1033 52.98 P D0 58.4 0.00
ATZ SHZ PN 01 2025Dec 8 1033 57.84 P D0 88.6 0.46
B054 EHZ PB -- 2025Dec 8 1033 47.27 P U0 21.8 0.00
B057 EHZ PB -- 2025Dec 8 1033 53.08 P U1 59.1 0.00
B058 EHZ PB -- 2025Dec 8 1034 0.37 P U2 113.7 -0.39
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2025-12-08 1033 43.01 37 45.928 121W59.121 9.79 0.07 0.61 4.29 3.19 3.19E 9.78
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
7 7 21.6 Emb 156 8 6 6 0 7 7 1.76 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
3.19 7 1.76 E 11 5 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 21.6 300 111 PU 47.27 4.26 4.22 0.00 0.04 1.09 W 0.909 0.00 49.0 2.87 E
GLFBZPN SHZ 01 A 38.5 203 101 P 1 49.68 6.67 6.86 0.00 -0.19 0.82 W 0.328 0.00 31.0 2.54 E
RE9A7AM EHZ 00 A 50.4 96 99 PD 51.75 8.74 8.77 0.00 -0.03 1.09 W 0.971 0.00 104 3.72 E
ADUB1PN SHZ 01 A 57.5 179 97 PD 52.98 9.97 9.91 0.00 0.06 1.09 W 0.395 0.00 126 1 3.92 E
B057 PB EHZ -- A 58.7 300 97 PU 1 53.08 10.07 10.10 0.00 -0.03 0.82 W 0.948 0.00 35.0 2.68 E
ATZ PN SHZ 01 A 87.7 174 95 PD 57.84 14.83 14.79 0.00 0.04 1.09 W 0.446 0.00 111 3.83 E
B058 PB EHZ -- A113.0 161 94 PU 2 60.37 17.36 18.90 0.00 -1.54* 0.00 W 0.000 0.00 33.0 2.69 E