Errors from USGS Location and Magnitude:
EQPROC = 10.2km (6.3 mi)
HYPO2K = 5.4km (3.3 mi)
Magnitude = -0.0
USGS Report:
Date Time Lat Lon Mag Depth Location
-----------------------------------------------------------------------------------
2025/12/16 13:53:26 37.752 -121.941 M3.1 8.4 5 km SE of San Ramon, CA
EQPROC Summary:
2859 2025Dec16 1353 28.33 37.7355 -122.0547 12.53 0.01 18.9 54.9 201 5
GLFBZ SHZ PN 01 2025Dec16 1353 34.86 P ?0 33.4 -0.00
ADUB1 SHZ PN 01 2025Dec16 1353 38.22 P U0 54.6 -0.00
B054 EHZ PB -- 2025Dec16 1353 32.57 P U0 18.8 -0.00
B057 EHZ PB -- 2025Dec16 1353 38.35 P U0 55.5 -0.00
B058 EHZ PB -- 2025Dec16 1353 46.92 PgU1 112.1 0.31
HYPO2K Report:
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH-M RMS ERH ERZ XMAG1 FMAG1 PMAG GEOID-DEP
2025-12-16 1353 28.29 37 45.174 122W 0.260 12.25 0.11 2.24 3.75 3.13 3.13E 12.23
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 20.9 Emb 215 5 4 5 0 5 5 0.61 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
3.13 5 0.61 E 13 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 20.9 305 117 PU 32.57 4.28 4.28 0.00 0.00 1.05 W 0.999 0.00 51.0 2.94 E
GLFBZPN SHZ 01 A 36.6 201 106 P 34.86 6.57 6.66 0.00 -0.09 1.05 W 0.859 0.00 56.0 3.13 E
ADUB1PN SHZ 01 A 56.2 177 100 PU 38.22 9.93 9.75 0.00 0.18 1.05 W 0.438 0.00 102 3.74 E
B057 PB EHZ -- A 58.0 302 100 PU 38.35 10.06 10.05 0.00 0.01 1.05 W 0.998 0.00 35.0 2.71 E
B058 PB EHZ -- A112.3 160 95 PU 1 46.92 18.63 18.80 0.00 -0.17 0.79 W 0.704 0.00 31.0 2.66 E