Errors from USGS Location and Magnitude:
EQPROC = 12.3km (7.6 mi)
HYPO2K = 13.3km (8.2 mi)
Magnitude = 0.0
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2025/12/17 06:11:34 37.753 -121.945 M3.0 9.0 4 km SE of San Ramon, CA
EQPROC Summary:
2860 2025Dec17 611 33.80 37.8297 -121.8446 10.55 0.13 31.5 69.3 180 6
RE9A7 EHZ AM 00 2025Dec17 611 41.31 P D2 39.8 -0.00
ADUB1 SHZ PN 01 2025Dec17 611 45.49 P D0 65.8 -0.00
ATZ SHZ PN 01 2025Dec17 611 50.53 P ?0 94.7 0.82
B054 EHZ PB -- 2025Dec17 611 39.93 P U0 31.5 0.00
B057 EHZ PB -- 2025Dec17 611 45.71 P U0 67.3 0.00
B058 EHZ PB -- 2025Dec17 611 53.97 Pg?3 116.8 1.03
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2025-12-17 0611 34.36 37 50.207 121W50.730 4.73 0.11 1.22 10.24 2.97 2.97E 4.72
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
6 6 31.3 Emb 180 5 4 6 0 6 - 5 0.64 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
2.97 5 0.64 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 31.3 275 95 PU 39.93 5.57 5.57 0.00 0.00 1.26 W 0.956 0.00 51.0 2.97 E
RE9A7AM EHZ 00 A 40.1 109 94 PD 2 41.31 6.95 7.01 0.00 -0.06 0.63 W 0.988 0.00 45.0 4 2.90XE
ADUB1PN SHZ 01 A 66.5 191 92 PD 45.49 11.13 11.29 0.00 -0.16 1.26 W 0.501 0.00 91.0 3.61 E
B057 PB EHZ -- A 66.7 289 92 PU 45.71 11.35 11.33 0.00 0.02 1.26 W 0.980 0.00 35.0 2.69 E
ATZ PN SHZ 01 A 95.4 183 91 P 50.53 16.17 16.00 0.00 0.17 1.26 W 0.529 0.00 92.0 3.65 E
B058 PB EHZ -- A117.5 168 91 P 3 53.97 19.61 19.59 0.00 0.02 0.32 W 0.044 0.00 33.0 2.69 E