Errors from USGS Location and Magnitude:
EQPROC = 19.2km (11.9mi)
HYPO2K = 12.2km (7.6 mi)
Magnitude = -0.2
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2025/12/08 13:21:23 37.754 -121.941 M3.0 8.5 4 km SE of San Ramon, CA
EQPROC Summary:
2848 2025Dec 8 1321 21.20 37.8676 -121.7769 1.00 0.02 37.3 76.2 247 6
GLFBZ SHZ PN 01 2025Dec 8 1321 32.04 P ?3 57.4 0.00
ADUB1 SHZ PN 01 2025Dec 8 1321 34.35 P D3 71.2 -0.02
ATZ SHZ PN 01 2025Dec 8 1321 39.32 P ?3 99.4 0.41
B057 EHZ PB -- 2025Dec 8 1321 34.40 P U3 71.8 -0.08
B054 EHZ PB -- 2025Dec 8 1321 28.63 P U0 37.3 0.00
B058 EHZ PB -- 2025Dec 8 1321 41.77 P ?3 119.9 0.00
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2025-12-08 1321 22.88 37 50.492 121W51.004 0.62 0.04 3.47 8.67 3.17 3.17E 0.61
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
6 6 30.8 Emb 254 11 3 5 0 6 - 5 0.67 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
3.17 5 0.67 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 30.8 274 27 PU 28.63 5.75 5.75 0.00 0.00 2.50 W 0.999 0.00 63.0 1 3.17 E
GLFBZPN SHZ 01 A 51.4 212 27 P 3 32.04 9.16 9.10 0.00 0.06 0.62 W 0.956 0.00 40.0 2.80 E
B057 PB EHZ -- A 66.2 289 27 PU 3 34.40 11.52 11.50 0.00 0.02 0.62 W 0.997 0.00 45.0 2.93 E
ADUB1PN SHZ 01 A 66.9 190 27 PD 3 34.35 11.47 11.62 0.00 -0.15 0.62 W 0.385 0.00 145 4.06 E
ATZ PN SHZ 01 A 95.9 183 27 P 3 39.32 16.44 16.33 0.00 0.11 0.62 W 0.659 0.00 21.0 4 2.23XE
B058 PB EHZ -- A118.1 168 27 P 3 41.77 18.89 19.94 0.00 -1.05* 0.00 W 0.000 0.00 43.0 2.95 E